[Paleontology • 2026] Paludohadros proudlovii • A New iguanodontian Dinosaur (Iguanodontia: Hadrosauroidea) from the Weald Clay Formation (Lower Cretaceous) of Smokejacks Brickworks, southern England

 Paludohadros proudlovii 

Sacamoto, Lockwood, Langer, Clark, Barrett, Turner & Maidment, 2026

DOI: doi.org/10.1080/14772019.2026.2726221

artwork by Guilherme Gehr.

 

Abstract

A new genus and species of an early-diverging hadrosauroid dinosaur, Paludohadros proudlovii gen. et sp. nov., is described from the Lower Cretaceous Weald Clay Formation of Smokejacks Brickworks, southern England. This new taxon can be diagnosed by the following autapomorphies and combination of characters: dentary teeth with two secondary ridges and a variable number of accessory ridges on the lingual surface of the crown; surangular with a dorsally projecting lateral process that is offset laterally from the dorsal surface of the anterior process; humerus with a proximally extending ridge on the anteromedial surface of the distal condyle; ischium with a posteroventrally curved shaft, a well-developed ischial boot and an obliquely oriented crest dorsal to the obturator process on the lateral surface of the shaft and a tibia with bosses on the medial and lateral surfaces near the proximal end. Although iguanodontians from the Weald Sub-basin have long been known from older Valanginian strata, represented by Barilium dawsoni, Hypselospinus fittoni and Kukufeldia tilgatensis, the description of Paludohadros proudlovii from the Barremian represents an increase in this diversity of iguanodontians from the Wealden Group, and it is the only valid iguanodontian taxon from the Barremian Weald Clay Formation reported so far. Although broadly contemporaneous, the iguanodontians of the Wessex Formation of the Isle of Wight are different taxa, raising the possibility that the Wessex and Weald Clay formations were deposited at slightly different times.

 

Keywords: Barremian, diversity, Iguanodontia, Lower Cretaceous, Smokejacks Brickworks, Wealden Group

Systematic palaeontology

Dinosauria Owen, 1842

Ornithischia Seeley, 1888

Ornithopoda Marsh, 1881

Iguanodontia Baur, 1891

Ankylopollexia Sereno, 1986

Styracosterna Sereno, 1997

Hadrosauriformes Sereno, 1997

Hadrosauroidea Huene, 1952

Paludohadros gen. nov.

Etymology. Paludohadros is derived from the Latin word palus (genitive paludis), meaning swamp, reflecting the swampy environment of the Weald Clay Formation during the Early Cretaceous, and that Smokejacks Pit is often very muddy today, and the Greek word hadros, meaning robust or stout, a term frequently used for iguanodontians.

Locality and horizon. UK National Grid Reference TQ 11252 37263 (± 6 m), Smokejacks Pit (also known as Ewhurst Works, and sometimes referred to as Ockley Pit), Ockley, Surrey, UK. Weald Clay Formation, Barremian, Lower Cretaceous. The specimen was found in the same horizon but about 100 m west of the Baryonyx walkeri type locality.

Paludohadros proudlovii gen. et sp. nov.

Etymology. The specific name honours the late Mr William Proudlove, former factory manager of Ewhurst Works. Will passed away in 2000 at the age of 35, shortly before the specimen was excavated, leaving behind a young family. He was an important coach and mentor to current manager Tim Burgess, and we name the specimen in his memory here.

Holotype. NHMUK PV R 16396, a partial skeleton ....

 

Diagnosis. Paludohadros proudlovii differs from all other iguanodontians by possessing the following autapomorphies and a unique combination of characters (autapomorphies indicated with an asterisk): dentary teeth with two secondary ridges and a variable number of accessory ridges on the lingual surface of the crown (1); surangular with a dorsally projecting lateral process that is laterally offset from the dorsal margin of the anterior process and separated from it by a shallow groove* (2); humerus with a proximally extending ridge on the anteromedial surface of the medial distal condyle (3); ischium with a combination of a posteroventrally curved shaft, a well-developed ischial boot and a laterally projecting crest on the lateral surface on the proximal portion of the shaft* (4); tibia with a boss on the medial surface of the proximal end (5).

 Paludohadros proudlovii life restoration.

Original artwork by Guilherme Gehr.

Ricardo J. Sacamoto, Jeremy A. F. Lockwood, Max C. Langer, Brett Clark, Paul M. Barrett, Alice Turner and Susannah C. R. Maidment. 2026. A New iguanodontian Dinosaur from the Weald Clay Formation (Lower Cretaceous) of Smokejacks Brickworks, southern England. Journal of Systematic Palaeontology. 24(2); 2726221. DOI: doi.org/10.1080/14772019.2026.2726221 [26 Oct 2026]  

[Ichthyology • 2026] Tridensimilis magnus • A New Species of Tridensimilis (Siluriformes: Trichomycteridae) from Tapajós Basin, Brazil: the Largest translucent Catfish Species of Tridentinae

 Tridensimilis magnus

Colares Canto, Datovo, Ohara, de Pinna & Ribeiro, 2026.  

DOI: doi.org/10.1590/1982-0224-2025-0209 

Abstract

A new species of translucent catfish of the genus Tridensimilis is described from the upper and middle rio Tapajós basin, states of Pará and Mato Grosso, Brazil. In addition, we redefine the taxonomic limits of the genus Tridensimilis and present evidence that questions the current generic placement of Tridentopsis tocantinsi. The new species is distinguished from congeners by a set of morphological features, in combination: number of vertebrae, anal-fin rays, opercular and interopercular odontodes; eyes positioned laterally and oriented ventrally, slightly more visible in ventral than in dorsal view; and basipterygia fused at midline. Live specimens of the new species display ex situ atmospheric air capture at the water surface, resulting in the filling of the digestive cavity with air bubbles, a behavior recorded for the first time in any representative of Tridentinae. The new species is the largest currently known of the subfamily Tridentinae, with analyzed specimen reaching 34 mm of standard length. The new taxon likely increases the list of endemism in the rio Tapajós basin.

Keywords: Amazon basin; Behavior; Biodiversity; Conservation; Taxonomy

 

Live specimens of Tridensimilis magnus:
 UFOPA-I 1773, 29.0 mm SL (A) and INPA-ICT 62042, not mensured (B-D). Arrows indicate swallowed air bubbles in stomach and intestines.

Tridensimilis magnus, new species

Diagnosis. Tridensimilis magnus differs from all other Tridentinae in having the largest body length, reaching 34 mm SL (vs. 27 mm in Tridens, 25 mm in Tridentopsis Myers, 1925, 17 mm in Miuroglanis Eigenmann & Eigenmann, 1889, 18 mm in Rhinotridens, and 23 mm in Tridensimilis). The new species is further distinguished from all tridentines, except Rhinotridensbritskii, by having 39–41 post-Weberian vertebrae (vs. 34–38 in Miuroglanis, Rhinotridens chromocaudatus, Tridentopsis and Tridensimilis, and 45–52 in Tridens). Tridensimilis magnus additionally differs from Tridensimilisvenezuelae and T. tocantinsi LaMonte, 1939,in having longer maxillary barbels that surpass the opercular odontophore (vs. not extending beyond pupil); externally visible rictal barbels reaching the base of interopercular odontophores (vs. rictal barbels not externally visible or reaching at most one-third of distance from their base to anterior margin of eyes); 7 or 8 dorsal-fin rays (vs. 8–11); and pelvic-fin base vertically aligned with the 13th or 14th vertebra (vs. with the 11th vertebra). The new species is additionally distinguished from T. tocantinsi in having 6 or 7 opercular odontodes (vs. 10); from T.venezuelae by having 7 or 8 interopercular odontodes (vs. 4–6).

Etymology. The specific epithet magnus derives from Latin meaning “large” or “great”, in allusion to the longer length of the species in comparison to its congeners, emphasizing one of the distinctive morphological traits that diagnose the species. An adjective.

 

 André L. Colares Canto, Aléssio Datovo, Willian M. Ohara, Mário C. C. de Pinna and Frank Raynner V. Ribeiro. 2026. A New Species of Tridensimilis (Siluriformes: Trichomycteridae) from Tapajós Basin: the Largest translucent Catfish Species of Tridentinae. Neotropical Ichthyology. 24(02); DOI: doi.org/10.1590/1982-0224-2025-0209  [20 July 2026]

[Ichthyology • 2025] Pseudogastromyzon putienensis • A New Species of Pseudogastromyzon Nichols (Teleostei: Balitoridae) from Fujian Province, Southeastern China

Pseudogastromyzon putienensis 

Chen & Li, 2025

莆田擬腹吸鰍 | DOI: doi.org/10.11646/zootaxa.5738.1.22

Abstract

In this study, a new species of balitorid loach from Fujian Province was collected and described herein, namely Pseudogastromyzon putienensis. The new species can be identified by having dorsal fin iii, 7, anal fin ii, 5, pectoral fin i, 17–18, pelvic fin i, 9, lateral line scales 65–71 and vertebrae counts 38–39. For body and fin colourations, male possess greyish brown with metallic sheen, straight pale bars, and conspicuous rows of large dorsal-fin spots while females with ivory base color and distinct Y-shaped or curved bars, and transparent paired and caudal fins with striped rows. The new species was collected from the Mulan River system and is closely related to Pseudogastromyzon fasciatus; comparisons of the two species are provided herein with comments upon the taxonomy of related congeners in southeastern China.

 Pisces, Pseudogastromyzon, Balitoridae, new species, Fujian Province, China 

Pseudogastromyzon putienensis sp. nov.
Fresh coloration of adult male (A, NTOUP-2023-09-001, holotype, 66.7 mm SL), and juvenile (B, NTOUP-2023- 09-003, paratype, 40.3 mm SL) 

Pseudogastromyzon Nichols, 1925 

Pseudogastromyzon putienensis sp. nov.

(莆田擬腹吸鰍)

 I-SHIUNG CHEN and HSIEN-EN LI. 2025. A New Species of Pseudogastromyzon Nichols (Teleostei: Balitoridae) from Fujian Province, Southeastern China.  Zootaxa. 5738(1); 183-189. DOI: doi.org/10.11646/zootaxa.5738.1.22 [2025-12-30]

[PaleoEntomology • 2026] Folimantis hyalinala • Mimicry of Mantis and Selaginella from Cretaceous provides New Evidence for the Deep-time Co-evolution of Insects and Plants

 

Folimantis hyalinala

Yang, Chen, Engel, Ren & Gao, 2026

DOI: doi.org/10.1111/nph.71619  

  Researchgate.net/publication/415223879

Ecological reconstruction by Xiaoran Zuo

 

Summary

• Mimicry between insects and plants represents sophisticated survival strategies. Their long-term evolutionary interactions led to mutual adaptation, creating a complex ecological symbiosis. However, the deep-time ecological associations of mimicry between insects and plants remain limited due to the scarcity of preserved fossils.

• Here, we report the fossil evidences of mimicry between praying mantis and spike mosses in 98-Myr-old Kachin amber. The new Cretaceous mantis, Folimantis hyalinala gen. et sp. nov., has a rare form of leaf mimicry via abdominal leaf-shaped extensions that resemble contemporaneous vegetative leaves (trophophylls) of Selaginella in shape, size, and pattern of arrangement.

• The new findings provide the earliest direct evidence of the co-associations between mantis and its mimetic plants during the Cretaceous and suggest that the stem-group had already developed distinct structural features that mimic plant leaves during the early divergences of Mantodea.

• A diversification analysis of mimicry between fossil insects and plants from the Late Paleozoic and Mesozoic indicates that, before the rise of angiosperms in the Late Cretaceous, mimicry between insects and gymnosperms, ferns, lichens, and even Selaginella had existed for a long time and that changes in mimicry forms paralleled the evolutionary succession of plant lineages.

Keywords: camouflage, Folimantis hyalinala, insect–plant co-evolution, Mantodea, Mesozoic, Selaginella

Ecological reconstruction of mimicry between Folimantis hyalinala and Selaginella grimaldii

(reproduced by kind permission of Xiaoran Zuo).

Folimantis hyalinala gen. et sp. nov.

Hongru Yang, Liang Chen, Michael S. Engel, Dong Ren and Taiping Gao. 2026. Mimicry of Mantis and Selaginella from Cretaceous provides New Evidence for the Deep-time Co-evolution of Insects and Plants. New Phytologist. DOI: doi.org/10.1111/nph.71619 [04 October 2026] 

 Researchgate.net/publication/415223879_Mimicry_of_Mantis_and_Selaginella_from_Cretaceous 

[Paleontology • 2026] Sinojapyx giganteus • Giant Jurassic Hunter: the Earliest dipluran (Hexapoda: Diplura) and Its Implications for hexapod body pattern evolution

Sinojapyx giganteus

Wang, Cai, Sánchez-García, Sendra & Huang, 2026

DOI: doi.org/10.1098/rspb.2026.1207 

Palaeoecological reconstruction by Jie Sun.

Abstract

Hexapoda comprises the hyperdiverse insects and three cryptic, early-diverging lineages, Protura, Collembola, and Diplura, that are key to understanding the hexapod body pattern but remain extremely rare as fossils. Here, we report the earliest dipluran, Sinojapyx giganteus gen. et sp. nov., from the Middle Jurassic Daohugou Biota (approx. 165 Mya). Its ectognathous mouthparts challenge the conventional view that all non‑insect hexapods are entognathous, providing solid evidence that entognathy evolved independently at least three times. The pincer‑like cerci of Sinojapyx are symmetrical and lack denticles, representing a transitional state preceding the sophisticated predatory appendages of extant japygoids. Exceeding 5 cm in body length and equipped with robust mandibles and pincer-like cerci, this giant soil dweller occupied the apex of the soil food web in the Jurassic, filling a niche typically held by scorpions or centipedes today. This discovery not only bridges a major gap in the dipluran fossil record but also offers critical insights into the ancestral body pattern of non‑insect hexapods and soil trophic networks in the Jurassic.

Keywords: diplura, hexapod evolution, mouthpart, entognathy, grasping apparatus

 

General habitus of Sinojapyx giganteus (holotype, NIGP205729) from the Middle Jurassic Daohugou Bed.
(A) Counterpart, inner view of dorsal aspect. (B) Part, inner view of ventral aspect. (C) Line drawing based on the part with reference to the counterpart; scale bar, 5 mm.

Systematic palaeontology

Superclass: Hexapoda Latreille, 1825 

Class: Diplura Börner, 1904 

Superfamily: Japygoidea Lubbock, 1873 

Family: Sinojapygidae fam. nov.

Type genus: Sinojapyx gen. nov.

Diagnosis. Body size gigantic, exceeding 5 cm (more than twice the length of typical extant Japygoidea, which are usually < 2 cm); head nearly triangular; mouthparts ectognathous, robust mandibles with large teeth and laciniae lacking pectinate laminae; maxillary and labial palps multi-segmented; abdominal segment IX strongly elongated; segment VIII−X not more sclerotized than the rest of abdomen, with urosternite X partly fused to the pleurite; pincer-like cerci equal, devoid of teeth and denticles.

 

Genus: Sinojapyx gen. nov.

Type species: Sinojapyx giganteus sp. nov.

Etymology. The prefix, ‘Sino-,’ refers to China. ‘Japyx’ denotes the type genus of the family Japygidae. The gender is masculine.

 

Sinojapyx giganteus sp. nov.

Etymology. The specific epithet is derived from the Latin word ‘gigante’ which means ‘giant.’ The gender is masculine.

Phylogenetic and evolutionary context of Diplura.
(A) Phylogeny of Diplura showing the phylogenetic placement of Sinojapyx giganteus and Ferrojapyx vivax.
(B) Evolutionary context of the cerci in Diplura.

Palaeoecological reconstruction of Sinojapyx giganteus, illustrated by Jie Sun.

Yehao Wang; Chenyang Cai; Alba Sánchez-García; Alberto Sendra and Diying Huang. 2026. A Giant Jurassic Hunter: the Earliest dipluran and Its Implications for hexapod body pattern evolution. Proc. R. Soc. B. 293 (2080): 20261207. DOI: doi.org/10.1098/rspb.2026.1207 [07 Oct 2026]

[Phycology • 2026] Halymenia dracophylla & H. elegans (Rhodophyta: Halymeniales) • Systematic Revision of branched Halymenia from the Philippines

Halymenia elegans Tahil & Showe M.Lin, 

in Tahil, Lin, Dumilag et Liao, 2026. 

DOI: doi.org/10.1080/09670262.2026.2738911 

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ABSTRACT

Despite early documentation of Halymenia species in the Philippines, the species diversity and phylogenetic relationships of this genus in the region, and its connections to neighbouring areas, have remained largely unexplored. In this study, we used rbcL sequence data to infer interspecific relationships among Philippine and global Halymenia species. Molecular analyses identified at least nine Halymenia species in the Philippines, including two newly described taxa – H. dracophylla sp. nov. and H. elegans sp. nov. – alongside several species commonly found throughout the IndoPacific (e.g. H. durvillei, H. tondoana, H. malaysiana, H. maculata, H. dilatata). Phylogenetic analysis showed that H. dracophylla is a sister species to the H. durvillei complex, but it can be readily distinguished by its thallus bearing numerous strap-shaped, short bladelets and having relatively large carposporophytes (260−380 µm in diameter). Conversely, H. elegans forms a lineage sister to a larger clade of branched Indo-Pacific species and differs from the other species by possessing thin, membranous thallus blades and having smaller carposporophytes (100−115 µm in diameter). The discovery of these two new species, along with the identification of additional cryptic taxa through molecular analyses, reveals that Halymenia diversity in the Philippines is greater than previously recognized. These findings highlight the need for continued investigation into the taxonomy and biogeography of Halymenia in the Indo-Pacific region.

 KEYWORDS: Cryptic species, Halymenia dracophylla sp. nov., Halymenia elegans sp. nov., marine red algae, Philippines, taxonomy

Halymenia dracophylla Tahil & Showe M.Lin sp. nov. 
Fig. 2. Holotype specimen (NTOU002614), a female gametophyte showing densely overlapping bladelets along the thallus margins.
Fig. 3. Isotype specimen (NTOU002618), a tetrasporophyte showing a deeply branched thallus blade arising from a short stipe (arrow).

Scale bars: Figs 2, 3 = 5 cm.

Halymenia dracophylla Tahil & Showe M.Lin, sp. nov.  

ETYMOLOGY: ‘dracophylla’ refers to the thallus blades swinging underwater, resembling flying dragons.

DISTRIBUTION, HABITAT AND SEASONALITY: Only known from the province of Sorsogon in southern Luzon. Plants were found during the late dry season (May) in the Philippines, in deeper subtidal areas (6–8 m in depth), growing on coral rubble and rocks. The fringing reef habitat is characterized by strong water currents and pronounced tidal waves.

SPECIMENS EXAMINED: Luzon Island: FMB Resort, Sorsogon, coll. J. Dig & C. Pangantihon 7 May 2024 (tetrasporic and female, NTOU-002614–002616).

Halymenia elegans Tahil & Showe M.Lin sp. nov. 
 Fig. 20. Holotype specimen (NTOU002610), a female gametophyte showing a palmate-shaped blade (white arrow) and feathery branches bearing numerous small bladelets (black arrows) with dentate margins.
Fig. 21. Isotype specimen (NTOU002611), a tetrasporophyte showing broad blades bearing irregularly arranged marginal bladelets (black arrows) and surface tiny bladelets (white arrowheads).  

Scale bars: Figs 20, 21 = 5 cm.

Halymenia elegans Tahil & Showe M.Lin sp. nov. 

ETYMOLOGY: ‘elegans’ referring to its showy and beautiful thallus blades.

DISTRIBUTION, HABITAT AND SEASONALITY: Only known from the type locality. Plants were found during the early dry season (January) in the Philippines, growing on shaded rocks in the reef adjacent to an estuary and extensive mangrove area on the island of Sanga-Sanga.

SPECIMENS EXAMINED: Sanga-Sanga Island, Tawi-Tawi: Lakit-Lakit, coll. A. Tahil, 28 January 2024 (tetrasporic & female, NTOU002610–002613).

Arkady A. Tahil, Showe-Mei Lin, Richard V. Dumilag and Lawrence M. Liao. 2026. Systematic Revision of branched Halymenia (Halymeniales, Rhodophyta) from the Philippines, including the Description of H. dracophylla sp. nov. and H. elegans sp. nov. European Journal of Phycology. DOI: doi.org/10.1080/09670262.2026.2738911 [22 Oct 2026]

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[Botany • 2026] Puya ukumari (Bromeliaceae: Puyoideae) • A New montane bromeliad Species from southeastern Peru

Puya ukumari  Treviño, Yuca & Gouda, 

in Yuca-Palomino, Mamani-Mayta, Champi-Charalla, Condori-Cuti, Llacta-Gomez, Treviño-Zevallos, Gouda, Forsyth, Whitworth et Pillco-Huarcaya, 2026.

DOI: doi.org/10.3897/phytokeys.280.211255

Abstract

Montane forests of the Tropical Andes are among the most diverse and endemic-rich ecosystems in the world; however, they remain insufficiently documented, particularly in remote and topographically complex landscapes. Here, we describe Puya ukumari sp. nov. (Bromeliaceae), a new species from humid montane forests and forest–puna ecotonal habitats in the Kosñipata and Mapacho valleys of southeastern Peru, occurring at elevations between 2,300 and 3,300 m a.s.l. The species was first detected during a long-term ecological monitoring program in the region but remained unrecognized for several years due to the limited number of recorded flowering individuals. Its taxonomic identity became evident following the observation of flowering plants during field surveys conducted in 2025. Puya ukumari resembles P. lineata in possessing a simple, nodding, dark-colored inflorescence; however, it is readily distinguished by its considerably larger flowering plant height (160–200 cm vs. 40–80 cm), significantly wider inflorescence diameter (11–12.5 cm vs. 3.5–6 cm), larger lanate sepals (30–33 × 15–18 mm vs. 13–18 × 6–10 mm and floccose), and markedly darker, nearly black petals. These characters support its recognition as a distinct taxon within the group of Puya species with simple inflorescences. The species is currently known from a limited number of confirmed localities within a restricted elevational range. Based on its distribution and the observed threats to its habitat, a preliminary conservation assessment suggests that it should be classified as Endangered (EN) according to IUCN Red List criteria.

Key words: Bromeliaceae, montane forest, Peru, plant taxonomy, Tropical Andes

 

Puya ukumari sp. nov.
A. Habit; B. Lateral view of the flower and longitudinal section of the flower; C. Androecium and gynoecium; D. Stigma with spirally twisted lobes; E. Adaxial and abaxial views of the floral bract; F. Juvenile leaves; G. Spine; H. Blade indument and marginal leaf spines; I. Upper inflorescence bracts near the flowers; J. Basal inflorescence bracts; K. Lateral view of the fruit; L. Bottom view of the fruit; M. Transverse section of the fruit; N. Winged seed.

Illustration by Nidia Sanchez.

Puya ukumari sp. nov.
 A. Inflorescence; B. Frontal view of the flower; C. Lateral view of the flower; D. Longitudinal section of the flower; E1. Androecium and gynoecium; E2. Dorsifixed anthers; E3. Stigma with spirally twisted lobes; F1. Upper right petal; F2. Upper left petal; F3. Lower petal; G1. Adaxial view of the floral bract; G2. Abaxial view of the floral bract; H1. Perianth dissection, showing sepals and petals; H2. Sepal apex; H3. Petal apex. Photographs by Jhon Yuca.

Ecological context, floral visitors, and early regeneration of Puya ukumari sp. nov. 
a. Habitat in humid upper montane forest and forest–puna ecotone, showing rocky slopes and discontinuous canopy where the species occurs;
b. Diurnal floral visitor (bee, Apis mellifera) interacting with flowers during anthesis; c. Diurnal floral visitor Boissonneaua matthewsii approaching the inflorescence; d. Nocturnal floral visitor (Anoura sp.) recorded by camera trap during night activity;
e. Seed germination and early seedling development under ambient montane forest conditions at Wayqecha Biological Station. Scale bar: 5 mm.

Puya ukumari Treviño, Yuca & Gouda, sp. nov.

 

Diagnosis. Puya ukumari is similar to P. lineata but is readily distinguished by its much larger flowering size (160–200 cm vs. 40–80 cm), significantly wider inflorescence (11–12.5 cm in diameter vs. 3.5–6 cm), and much larger sepals (30–33 × 15–18 mm vs. 13–18 × 6–10 mm), which are lanate in P. ukumari and floccose in P. lineata, as well as by its markedly darker petals (nearly black vs. blue).

Etymology. The specific epithet ukumari is a noun in apposition derived from the Quechua word “ukumari”, meaning Andean bear (Tremarctos ornatus). The species is dedicated to the Andean bear in recognition of the ecological importance of Puya species as a key component of its diet and of their close association within Andean montane ecosystems.

 Jhon A. Yuca-Palomino, Norma G. Mamani-Mayta, Luis A. Champi-Charalla, Elias Condori-Cuti, Narciso Llacta-Gomez, Italo F. Treviño-Zevallos, Eric J. Gouda, Adrian Forsyth, Andrew Whitworth and Ruthmery Pillco-Huarcaya. 2026. Puya ukumari sp. nov. (Bromeliaceae, Puyoideae), A New montane bromeliad Species from southeastern Peru. PhytoKeys. 280: 113-131. DOI: doi.org/10.3897/phytokeys.280.211255 [15-10-2026]

[Botany • 2026] Osbeckia assamensis (Melastomataceae) • A New Species from Assam, Northeast India

 

Osbeckia assamensis  Barn. Das & N. Nath,

in Das et Nath, 2026. 

DOI: doi.org/10.11646/phytotaxa.781.3.8 

 facebook.com: Barnali DAS

Abstract

A new species of Melastomataceae, Osbeckia assamensis, is described here from Assam, northeast India. The new species is morphologically allied to Osbeckia nayarii G.S. Giri but differs in branching pattern, strigose stem, foliar features, inflorescence with 30–35 flowers, hairy calyx margin, presence of intersepalar emergences on the hypanthium, etc. The new species is quite distinct from other Osbeckia species having tetramerous flowers. A detailed taxonomic description, photographic illustration, comparison with allied taxa, and an artificial key to the closely related taxa are provided.

Eudicots, Assam, India, Melastomataceae, new species, Osbeckia, taxonomy

Barnali DAS and Namita NATH. 2026. Osbeckia assamensis, A New Species of Melastomataceae from Assam, Northeast India.  Phytotaxa. 781(3); 291-300. DOI: doi.org/10.11646/phytotaxa.781.3.8 [2026-10-22] 

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[Botany • 2026] Capparis sekongensis (Capparaceae) • A New Species from the Sekong Province, Laos

 

Capparis sekongensis Fici, Souvann., Lanors. & Lamxay, 

in Fici, Souvannakhoummane, Lanorsavanh et Lamxay, 2026. 

sciencepress.mnhn.fr/en/periodiques/adansonia/48/20 

  facebook.com/Laosbiodiverysity

A new species of Capparis L., C. sekongensis Fici, Souvann., Lanors. & Lamxay, sp. nov., is described and illustrated from the Sekong Province, southern Laos. The new species, belonging to Capparis sect. Monostichocalyx Radlk., is related to C. khuamak Gagnep., differing in several characters as the glabrous-pruinose twigs, the shorter, glabrous pedicels, the smaller sepals, glabrous outside, the petals woolly inside, the shorter gynophore and the subglobose ovary.

Keywords: Capparaceae, Capparis, Laos, sect. Monostichocalyx, new species.

Capparis sekongensis Fici, Souvann., Lanors. & Lamxay, sp. nov.

 

Silvio FICI, Keooudone SOUVANNAKHOUMMANE, Soulivanh LANORSAVANH and Vichith LAMXAY. 2026. A New Species of Capparis L. (Capparaceae) from the Sekong Province, Laos. Adansonia. 48(20); 227-232. [12 October 2026]
https://sciencepress.mnhn.fr/en/periodiques/adansonia/48/20 

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[Herpetology • 2026] Megophrys (Viridophrys) motuoensis • A striking New Subgenus and Species of Asian horned toads (Anura: Megophryidae) from Xizang, China

Megophrys (Viridophrys) motuoensis Liu, Zhang, Chen & Yuan,
Viridophrys Liu, Zhang, Chen & Yuan, subgen. nov.

in Liu, Zhang, Wei, Ai, Lu, Li, Zhou, Chen et Yuan, 2026. 

墨脱绿角蟾  |  DOI: doi.org/10.3897/zse.102.183945

Abstract

Motuo County, located in the eastern Himalayas and within the lower section of the Yarlung Tsangpo Grand Canyon, is characterized by steep elevational gradients and complex topography, supporting high levels of biodiversity and endemism that remain insufficiently explored. Based on integrated evidence from morphological comparisons and molecular phylogenetic analyses, a new subgenus and a new species of Asian horned toads from Motuo County, Xizang, China, are described. The new subgenus, Viridophrys subgen. nov., with its type species Megophrys (Viridophrys) motuoensis sp. nov., represents an independent evolutionary lineage within the broadly defined Megophrys, as supported by mitochondrial and nuclear DNA analyses. Although its exact sister-group relationship is not consistently resolved among different datasets, the new lineage is phylogenetically close to the subgenera Brachytarsophrys and Atympanophrys. Morphologically, the new subgenus can be distinguished from other major megophryine lineages by a combination of morphological characters. The discovery of Viridophrys subgen. nov. and M. (Viridophrys) motuoensis sp. nov. highlights the underestimated diversity of megophryids in the Yarlung Tsangpo Grand Canyon region and emphasizes the need for continued biodiversity surveys and conservation efforts in the eastern Himalayas.

Key Words: Himalayas, Megophrys (Viridophrys) motuoensis sp. nov., taxonomy, Viridophrys subgen. nov., Yarlung Tsangpo Grand Canyon region

Megophryinae Bonaparte, 1850

Genus Megophrys Kuhl & van Hasselt, 1822

Subgenus Viridophrys Liu, Zhang, Chen & Yuan, subgen. nov.

 Type species. Megophrys (Viridophrys) motuoensis
Liu, Zhang, Chen & Yuan, sp. nov.

Diagnosis. The subgenus Viridophrys subgen. nov. can be distinguished from other subgenera within the broadly defined Megophrys by the following diagnostic characteristics: (1) medium body size, mean SVL < 50 mm in adult females; (2) dorsal skin rough, with vivid green dorsal coloration and reddish markings, and ventral surfaces covered with irregular blotches; (3) head wider than long; (4) snout obtusely rounded and without rostral appendage; (5) maxillary teeth present; (6) vomerine teeth and vomerine ridges absent; (7) palpebral appendages absent, with minute tubercles along the outer edge of the upper eyelid; (8) temporal region short, tympanum large, distinct, close to posterior corner of eye, supratympanic fold thick and slightly curved over tympanum; (9) occipital fold absent; (10) dorsolateral fold absent; (11) presence of V-shaped parietoscapular ridge and arcuate central dorsal ridge; (12) flanks bearing scattered white-tipped tubercles, with a few tubercles occasionally present along the ventrolateral boundary; (13) lower jaw smooth, asperities absent; (14) subarticular tubercles on fingers absent; (15) webbing between toes is absent, toe fringe is lacking (Figs 4, 5).

Megophrys (Viridophrys) motuoensis sp. nov. adult female holotype SWU 0015893 in life.
A. Dorsal view; B. Ventral view; C. Dorsolateral view; D. Profile of head; E. Cloacal area.

Photographs by Ren-Da Ai.

Habitat of Megophrys (Viridophrys) motuoensis sp. nov. at the type locality, Beibeng Township, Motuo County, Nyingchi City, Xizang Autonomous Region, China. A. Broadleaf and coniferous mixed forest; B. Megophrys (Viridophrys) motuoensis sp. nov. in the wild (SWU 0015893).

Habitat photograph by Wen-Zhu Lu. Species photograph by Ren-Da Ai.

Etymology. The subgeneric name Viridophrys subgen. nov. is derived from the Latin viridis, meaning green, and the Greek ophrys, meaning eyebrow, in reference to the extensive green markings on the dorsum of the new taxon. The gender of the name is feminine.

Common name. Green horned toad subgenus /
Lǜ jiǎo chán yà shǔ (绿角蟾亚属).

Megophrys (Viridophrys) motuoensis Liu, Zhang, Chen & Yuan, sp. nov.

Etymology. The name “motuoensis” originated from the type locality: Motuo County, Nyingchi City, Xizang Autonomous Region, China.

Common name. Motuo green horned toad /
Mò tuō lǜ jiǎo chán (墨脱绿角蟾).

 

Xiao-Long Liu, Yin-Peng Zhang, Ping-Fan Wei, Ren-Da Ai, Wen-Zhu Lu, Xian-Qi Li, Wei-Wei Zhou, Jin-Min Chen and Zhi-Yong Yuan. 2026. A striking New Subgenus and Species of Asian horned toads (Anura, Megophryidae, Megophryinae) from Xizang, China.  Zoosystematics and Evolution. 102(5): 1295-1313. DOI: doi.org/10.3897/zse.102.183945 [21 Oct 2026]

[Ichthyology • 2024] Turcinoemacheilus ekmekciae • A New dwarf loach (Cypriniformes: Nemacheilidae) from upper Tigris and Euphrates

Turcinoemacheilus ekmekciae

Kaya, Yoğurtçuoğlu, Aksu, Bayçelebi & Turan, 2024

DOI: doi.org/10.1111/jfb.15578 

 

Abstract

Turcinoemacheilus ekmekciae, new species, from upper Euphrates and Tigris drainages is distinguished from other species of Turcinoemacheilus in Western Asia by having a dark stripe broader than the eye diameter along the lateral line, rarely possessing roundish blotches, 5–6 mandibular pores in mandibular canal, a comperatvely smaller head, a deeper body, and a greater pre-pelvic distance. Our specimens collected from the upper Great Zab, near the type locality of Turcinoemacheilus kosswigi, showed notable genetic divergence (a minimum K2P of 3.3%) from sequences reported as T. kosswigi in previous studies. Despite morphological similarities, this molecular difference suggests that the populations analysed in previous studies may represent a potential new species of Turcinoemacheilus, which we tentatively named as Turcinoemacheius cf. kosswigi. Molecular data also suggest that T. ekmekciae is characterized by a minimum K2P distance of 3.5% from Turcinoemacheilus minimus and T. cf. kosswigi. The three methods for species delimitation (assemble species by automatic partitioning [ASAP], Poisson tree processes [PTP], and multi-rate PTP [mPTP]) that were utilized for testing species assignments consistently identified our test group as a distinct species.

Keywords: cytochrome c oxidase I, freshwater, fish, taxonomy, Western Asia

Turcinoemacheilus ekmekciae,
from the top, FFR 3608, holotype, 36 mm standard length (SL); Kaynarca stream, Euphrates:
FFR 3616, paratype, 41 mm SL, Nerduş stream, Tigris:
Not preserved, ~35 mm SL; not preserved, ~40 mm SL; not preserved, ~40 mm SL; Kaynarca stream, Euphrates.

 Turcinoemacheilus ekmekciae, new species

Diagnosis: Turcinoemacheilus ekmekciae is distinguished from its congeners from upper Tigris and Euphrates drainages by a combination of characters. The new species is distinguished from T. minimus from Göksu and Kahta drainages by having a deeper caudal peduncle (7%–9% SL v. 6–7), and 5–6 mandibular pores in mandibular canal (v. 4–5). T. ekmekciae is distinguished from T. kosswigi from upper Greater Zab by having a greater pre-pelvic distance (50%–53% SL v. 47–50), a shorter upper caudal fin lobe (14%–18% SL v. 18–21), and a shorter maxillary barbel (15%–21% HL v. 21–26). The new species is further distinguished from T. kosswigi by having a dark stripe broader than the eye diameter along the lateral line, only in one population possessing roundish blotches (v. a dark-brown mid-lateral stripe narrower than the eye diameter).

Turcinoemacheilus ekmekciae is distinguished from the two Iranian Turcinoemacheilus, T. bahaii and T. hafezi, by the position of the ...

Etymology: The species is named for Fitnat Güler Ekmekçi for her contribution to the knowledge of the ichthyofauna of Türkiye. A noun in genitive, indeclinable.

 

Cüneyt Kaya, Baran Yoğurtçuoğlu, İsmail Aksu, Esra Bayçelebi and Davut Turan. 2024. Turcinoemacheilus ekmekciae, A New dwarf loach from upper Tigris and Euphrates (Teleostei: Nemacheilidae). Journal of Fish Biology. DOI: doi.org/10.1111/jfb.15578 [10 October 2023]

 x.com/TheFSBI/status/1747274014626836928

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[Ichthyology • 2026] Prognathodes thanatos • A New Deepwater Species of Butterflyfish (Teleostei: Chaetodontidae: Prognathodes) from Mozambique, Africa, with a Systematic Review of Chaetodontid Relationships on the Basis of Osteology

 Prognathodes thanatos

 Tea, Blum, Rocha, Parkinson & Stanley, 2026 

DOI: doi.org/10.1643/i2025038  

  x.com/IchsAndHerps

 Abstract 

Prognathodes thanatos, new species, is described on the basis of the holotype from Mozambique, Africa. The new species is readily distinguished from congeners in having the following combination of live coloration details and morphological characters: head and body silvery white with three broad, dark brown bands; pelvic fin including spine black; dorsal-fin rays XIII,19; anal-fin rays III,15; lateral line short and incomplete with 26–29 pored scales; gill rakers 4 + 12–13 = 16–17; snout length 12.6% SL; and angle of preopercle finely serrate. The new species appears to be most closely related to Prognathodes guyotensis, a poorly known, deepwater species of butterflyfish known from very few specimens. The assignment of both species to the genus Prognathodes is accompanied by a critical reassessment and discussion of the currently inadequate definition of the genus.

Prognathodes thanatos, new species, SAIAB 80277, holotype, 100.3 mm SL, off Bazaruto Archipelago, Mozambique, Africa in (A) fresh and (B) preserved coloration.
Photographs by (A) P. Heemstra, South African Institute of Aquatic Biology, copyright 2025, used with permission, and (B) C. Phan, Australian Museum Research Institute, copyright 2025.  x.com/IchsAndHerps

Underwater photographs of Prognathodes thanatos, new species, taken using remotely operated submersibles.
(A–B) 200 m, Comoro Islands; (C) depth unknown, off the coast of KwaZulu-Natal, South Africa; (D) depth unknown, likely >100 m, Leadsman Canyon, Sodwana Bay, off the coast of KwaZulu-Natal, South Africa

Yi-Kai Tea, Stanley D. Blum, Luiz A. Rocha, Kerryn Parkinson and Edward L. Stanley. 2026. A New Deepwater Species of Butterflyfish (Teleostei: Chaetodontidae: Prognathodes) from Mozambique, Africa, with a Systematic Review of Chaetodontid Relationships on the Basis of Osteology. Ichthyology & Herpetology. 114(3); 474-494. DOI: doi.org/10.1643/i2025038 (15 September 2026)  

 x.com/IchsAndHerps/status/2103540682904199366

 www.instagram.com/p/DdZv3B9E20t

[Arachnida • 2026] Songthela fengxiang, S. nanqiao, S. parallela, S. yanhe, S. yinchiba, ... • Species Diversity in the Segmented Spider Genus Songthela (Araneae: Mesothelae: Liphistiidae), with Descriptions of 12 New Species from Guizhou Province, China

[G, J] Songthela nanqiao sp. nov.;
[H, K] S. yanhe sp. nov.;
[I, L] S. yinchiba sp. nov. 

Xu, Zhang & Li, 2026

DOI: doi.org/10.3897/zse.102.216113

G–I. Female; J–L. Male, Scale bar: 5 mm.

 

Abstract

Twelve new species of the primitively segmented spider genus Songthela Ono, 2000, from Guizhou Province, China, are described based on the genital morphology of both sexes: S. chenjiapian sp. nov. (♂♀), S. cuantang sp. nov. (♂♀), S. fengxiang sp. nov. (♂♀), S. fuyan sp. nov. (♂♀), S. nanqiao sp. nov. (♂♀), S. parallela sp. nov. (♂♀), S. qingganglin sp. nov. (♂♀), S. tianba sp. nov. (♂♀), S. tudiao sp. nov. (♂♀), S. yanhe sp. nov. (♂♀), S. yinchiba sp. nov. (♂♀), and S. yuhu sp. nov. (♂♀). All new species are assigned to the multidentata-group based on the morphology of the male palp and female genitalia. Detailed diagnoses, descriptions, photographs, and a distribution map are provided. Mitochondrial cytochrome c oxidase subunit I (COI) sequences are also provided for the holotypes to facilitate future species identification and molecular studies.

Key Words: COI, description, morphology, taxonomy, trapdoor spiders

Microhabitat (A–F) and general somatic morphology (G–L) of new Songthela species.
G–I. Female; J–L. Male;
G, J. Songthela nanqiao sp. nov.; H, K. S. yanhe sp. nov.; I, L. S. yinchiba sp. nov.

Scale bar: 5 mm.

S. chenjiapian sp. nov., S. cuantang sp. nov., S. fengxiang sp. nov.,
S. fuyan sp. nov., S. nanqiao sp. nov., S. parallela sp. nov.,
S. qingganglin sp. nov., S. tianba sp. nov., S. tudiao sp. nov.,
S. yanhe sp. nov., S. yinchiba sp. nov., S. yuhu sp. nov.

Xin Xu, Yan Zhang and Daiqin Li. 2026. Species Diversity in the Segmented Spider Genus Songthela (Mesothelae, Liphistiidae), with Descriptions of 12 New Species from Guizhou Province, China. Zoosystematics and Evolution. 102(5): 1265-1293.  DOI: doi.org/10.3897/zse.102.216113 [15-10-2026]