[Paleontology • 2026] Antusuchus rionegrinus • A New early peirosaurid terrestrial Crocodile (Notosuchia: Peirosauridae) from La Buitrera (Candeleros Formation), Río Negro, Argentina

Antusuchus rionegrinus 

Fernández-Dumont, Apesteguía, Pol, Bona, Pérez Mayoral & Vega, 2026

 

DOI: doi.org/10.1080/08912963.2026.2683112  

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ABSTRACT

Notosuchia represents one of the most morphologically diverse groups of Mesozoic crocodyliforms and was particularly abundant in the Cretaceous of Gondwana. Among them, Peirosauridae comprises medium-sized terrestrial predators widely distributed across southern continents during the Late Cretaceous. Here we describe a new peirosaurid crocodyliform, Antusuchus rionegrinus gen. et sp. nov., from the Cenomanian Candeleros Formation of the Neuquén Basin (Río Negro Province, Argentina). The material, recovered from the La Buitrera Palaeontological Area, includes cranial and postcranial remains. Micro-computed tomography and anatomical comparisons reveal a unique combination of characters, including a short rostrum, an elongated palatal depression adjacent to the maxillary tooth row, a rod-shaped jugal bar, and a prominent sagittal crest. The dentition is ziphodont and includes a hypertrophied third maxillary tooth, consistent with predatory habits. Phylogenetic analyses recover Antusuchus rionegrinus as the earliest-branching member of Peirosauridae, sister to all remaining peirosaurids. This discovery provides new insights into the early evolution of peirosaurids and highlights the importance of the La Buitrera fauna for understanding mid-Cretaceous terrestrial ecosystems and the diversification of notosuchian crocodyliforms.

KEYWORDS: Peirosauridae, La Buitrera, Cretaceous, Notosuchia, Candeleros Formation, Neuquén Basin

Systematic Palaeontology

Crocodyliformes Hay, 1930

Notosuchia Gasparini, 1971 [Ruiz et al., 2021]

Peirosauria Leardi et al., 2024

Peirosauridae Gasparini, 1982 [Leardi et al., 2024]

Antusuchus rionegrinus gen. et sp. nov.

 

Etymology: Antu means sun in the Mapudungún language. Suchus is Latinised from Greek Souchos in references to the Egyptian crocodile-headed god Sebek. Rionegrinus named after Río Negro Province.

Holotype: MPCA PV 1294 (Figures 37), articulated skull and jaws.

 

Geographical and geological proceeding: The material was found in rocks representing the last 50 m of the Candeleros Formation deposit, at the base of the levels containing the La Buitrera fauna. The site corresponds to the base of the ‘Cañadón de Las Tortugas’ site, within the La Buitrera locality, one of the localities of the LBPA.

Diagnosis: A notosuchian crocodyliform characterised by the following unique combination of characters (autapomorphies indicated with asterisk): third premaxillary tooth larger than the fourth; large elongated depression close to the medial margin of the mid maxillary toothrow*; rostrum shorter than 50% of the total skull length; maxillary contribution to antorbital fossa as dorsoventrally high as the maxillary lateral surface between antorbital fossa and alveolar margin and extending posteriorly up to the posterior end of the antorbital fossa*; antorbital fossa restricted to posteroventral corner of antorbital fenestra; lacrimal extensively sutured to jugal; subtriangular ...

  

María Lucila Fernández-Dumont, Sebastián Apesteguía, Diego Pol, Paula Bona, Joaquín Pérez Mayoral and Nahuel Vega. 2026. A New early peirosaurid terrestrial Crocodile (Notosuchia) from La Buitrera (Candeleros Formation), Río Negro, Argentina. Historical Biology: An International Journal of Paleobiology. DOI: doi.org/10.1080/08912963.2026.2683112 [23 Jun 2026]

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[Mollusca • 2026] Sundadontina panhai • Discover before they Disappear: A New freshwater mussel Species in the Genus Sundadontina (Unionidae: Gonideinae: Pseudodontini) from the remote headwaters of the Chi River, Mekong Basin, northeastern Thailand

 

Sundadontina panhai  Nahok, C. Tumpeesuwan & S. Tumpeesuwan, 

in Nahok, Chanlabut, Tanmuangpak, Bolotov, Vikhrev, C Tumpeesuwan et S Tumpeesuwan, 2026.

 Ecologica . 99; 1-18.

 DOI: doi.org/10.37828/em.2026.99.1 

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Abstract

The Mekong River basin is a globally recognized freshwater biodiversity hotspot.  The most species-rich radiation of freshwater mussels in this basin belongs to the tribe Pseudodontini. This group contains numerous local endemic species that prefer small river and stream habitats with fast currents, rocky or gravel substrates, and clean water. Here, we describe Sundadontina panhai Nahok, C. Tumpeesuwan & S. Tumpeesuwan, sp. nov., a new species within this unique tribe. This species was discovered in remote tributaries of the Upper Chi River drainage, northeastern Thailand. Its taxonomic status was evaluated using an integrative approach, combining an analysis of shell morphology and mtDNA phylogeny (based on COI and 16S rRNA gene sequences). The new species differs from its congeners by a combination of unique conchological characteristics, including an elongate-ovate shell without a prominent wing, an unprojected umbo, a yellowish to dark brown periostracum, and a clearly protruding, triangular pseudocardinal tooth. All Sundadontina species are phylogenetically well-separated from each other in the mtDNA phylogeny, exhibiting a corrected COI p-distance of 2.5–16.1%. Our findings highlight that remote tributaries of the Mekong River still house undescribed endemic lineages of freshwater mussels, which are on the brink of extinction due to habitat degradation, rapid deforestation, river damming, irrigation and drainage projects, and other anthropogenic activities.

Key words Disjunct distribution, endemic freshwater mussel, habitat specialist, lotic ecosystem, phylogeny

Maps showing the geographic distribution of the genus Sundadontina.
 (A) General distribution of Sundadontina species (circles) and the type locality of the new species (red star) across mainland Southeast Asia; areas outlined by a dashed line indicate historical records from vague localities that could not be precisely georeferenced.
(B) Detailed sampling localities of Sundadontina panhai sp. nov. in the headwaters of the Chi River, northeastern Thailand, highlighting the type locality (red star) and additional collection sites (red circles). Maps were generated using QGIS v. 3.44 with the map base from HydroSHEDS (Lehner and Grill, 2013). (Maps: U. Chanlabut).

Family Unionidae Rafinesque, 1820

Subfamily Gonideinae Ortmann, 1916

Tribe Pseudodontini Frierson, 1927

Subtribe Pseudodontina Frierson, 1927 

(type genus: Pseudodon Gould, 1844; by original designation).

Genus Sundadontina Bolotov et al., 2020 

(type species: Anodonta cumingii Lea, 1851; by original designation)

Holotype of Sundadontina panhai sp. nov. (ZCPRU-0051).
External view of (A) right valve and (B) left valve. Internal view of (C) left valve and (D) right valve. (E) dorsal view of the shell; (F) details of the pseudocardinal teeth, showing the left valve on the left-hand side and the right valve on the right-hand side. (Photos: B. Nahok)

 Sundadontina panhai Nahok, C. Tumpeesuwan & S. Tumpeesuwan, sp. nov.

Diagnosis. The shell is elongate-ovate, rather thick. The umbo is not prominent, the posterior margin is somewhat biangular, without a prominent wing. The periostracum is yellowish to dark brown, sometimes with a copper-colored tint on the posterior margin; the nacre is whitish and shining. The pseudocardinal tooth is clearly protruding and triangular. The anterior adductor muscle scar is elliptical and distinctly deep, whereas the posterior adductor muscle scar is rounded and shallower. 

Etymology. The specific epithet 'panhai' is named in honor of Professor Dr. Somsak Panha, the esteemed mentor of the sixth and last authors, recognizing his pioneering leadership in the taxonomic research of land snails and freshwater bivalves in Thailand. 

Benchawan Nahok, Utain Chanlabut, Kitti Tanmuangpak, Ivan N. Bolotov, Ilya V. Vikhrev, Chanidaporn Tumpeesuwan, Sakboworn Tumpeesuwan. 2026. Discover before they Disappear: A New freshwater mussel Species in the Genus Sundadontina (Unionidae: Gonideinae: Pseudodontini) from the remote headwaters of the Chi River, Mekong Basin, northeastern Thailand. Ecologica Montenegrina. 99; 1-18. DOI: doi.org/10.37828/em.2026.99.1

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[Ichthyology • 2026] Characidium lilloi • A New Species of Characidium (Characiformes: Crenuchidae) from the Northwestern La Plata Basin in Argentina

Characidium lilloi

Terán, Méttola, Alonso, Montes, Méndez-López, Miranda, Aguilera & Mirande, 2026

DOI: doi.org/10.1643/i2025064  

 x.com/IchsAndHerps

Abstract

Using an integrative approach that combines molecular and morphological analyses, we describe Characidium lilloi, a new species from the Andean portion of the northwestern La Plata basin, specifically from the upper Bermejo and Juramento River basins in Argentina. Specimens were examined for morphometric, meristic, and osteological traits. Genetic analyses based on COI and CYTB sequences were conducted to infer its phylogenetic relationships. The new species is distinguished by a unique combination of morphological characters including an unscaled isthmus, absence of dark stripes or spots on fins, 7–13 regular transversal bars, 14 scales around the caudal peduncle, 35–37 scales in longitudinal series, and highly developed nasal flaps; and molecular evidence. Characidium lilloi, new species, was found to be closely related to C. fasciatum and C. gomesi and represents the first known member of the C2 Clade in the northwestern La Plata basin. Ecologically, C. lilloi, new species, inhabits fast-flowing mountain rivers within the Yungas and Chacoan. This discovery underscores the northwestern La Plata basin as a biogeographic hotspot of endemism and reinforces its importance as a high-priority area for freshwater conservation.

Lateral views of live paratypes of Characidium lilloi.
 CI-FML 8196, 36.8–49.1 mm SL,
Argentina, El Rey National Park, Río Popayán.

Scale bar = 1 cm. 

Characidium lilloi, new species

Etymology.—This species is named in honor of the Argentine naturalist Miguel Lillo (1862–1931), a pioneer who recognized the importance of public investment in science and education. In his commitment to advancing these fields, Lillo donated his personal assets before his death, ensuring the continuity of his legacy through several key institutions. These include the Facultad de Ciencias Naturales e Instituto Miguel Lillo, the Fundación Miguel Lillo, and the Unidad Ejecutora Lillo–CONICET, all of which have played significant roles in the development of science and education in Argentina. The specific name lilloi, thus, not only pays tribute to Lillo’s contributions but also honors the dedication of public workers in Argentina who promote and contribute to the progress of science, education, and technology.   

Guillermo E. Terán, V. Ezequiel Méttola, Felipe Alonso, Martín M. Montes, Alejandro Méndez-López, Guido Miranda, Gastón Aguilera and J. Marcos Mirande. 2026. A New Species of Characidium (Characiformes: Crenuchidae) from the Northwestern La Plata Basin in Argentina. Ichthyology & Herpetology. 114(2):283-298 DOI: doi.org/10.1643/i2025064 [23 June 2026]

  x.com/IchsAndHerps/status/2069532500280381641

Utilizando un enfoque integrador que combina análisis moleculares y morfológicos, se describe Characidium lilloi, una nueva especie proveniente del sector andino del noroeste de la cuenca del Plata, específicamente de las cuencas altas de los ríos Bermejo y Juramento en Argentina. Los ejemplares fueron examinados en cuanto a caracteres morfométricos, merísticos y osteológicos. Se realizaron análisis genéticos basados en las secuencias de los genes mitocondriales COI y CYTB con el fin de inferir sus relaciones filogenéticas. La nueva especie se distingue por una combinación única de caracteres morfológicos incluyendo el istmo sin escamas, ausencia de bandas oscuras o manchas en las aletas, presencia de 7 a 13 barras transversales regulares, 14 escamas alrededor del pedúnculo caudal, 35 a 37 escamas en la serie longitudinal, y lóbulos nasales altamente desarrollados; y evidencia molecular. Characidium lilloi, nueva especie, se encuentra estrechamente relacionada con C. fasciatum y C. gomesi, y representa el primer miembro conocido del Clado C2 en el noroeste de la cuenca del Plata. Desde el punto de vista ecológico, C. lilloi, nueva especie, habita ríos de montaña de corriente rápida, dentro de las ecorregiones de las Yungas y el Chaco. Este hallazgo resalta al noroeste de la cuenca del Plata como un hotspot biogeográfico de endemismos, y refuerza su importancia como una región de alta prioridad para la conservación de ambientes dulceacuícolas.

[Herpetology • 2026] Philautus candrageni • Revisiting the Taxonomy of Javan Philautus (Anura: Rhacophoridae), with the Description of A New Species

Philautus candrageni   

 Herlambang, Gonggoli, Racho, Asti, Cahyadi, Atmaja, Fauzi, Eprilurahman & Hamidy, 2026 

  

DOI: doi.org/10.11646/zootaxa.5768.1.2   

 Researchgate.net/publication/401693573

Abstract 

The genus Philautus comprises 52 recognized species, three of which are currently known from Java and are endemic to the island. We conducted extensive fieldwork across Central Java between 2017 and 2025 to reassess the taxonomy of Philautus in this understudied region. We clarified species boundaries and uncovered cryptic diversity within this genus by employing an integrative framework that combined morphological assessments, molecular phylogenetics, and bioacoustic analyses. Our results include a redescription of P. jacobsoni and the formal description of a newly identified montane species, Philautus candrageni sp. nov., from Mount Merapi. We also provide further insights into the taxonomic status of Philautus pallidipes. These findings reveal considerable taxonomic complexity and previously overlooked diversity within Java’s montane amphibian assemblages. They also underscore the importance of sustained integrative research and advocate for targeted conservation efforts for Philautus species across the island. 

Amphibia, Conservation, cryptic, endemic, Java, mountain

Live specimen of the paratypes of Philautus candrageni sp. nov. from Mount Merapi:
(A, B) Dorsal and ventral ofMzB 33679 (male), (C, D) Dorsal and ventral of MzB 33678 (male), (E, F) Dorsal and ventral of MzB Amph 33677 (male).

Photos by Hastin Ambar Asti. 

Philautus candrageni sp. nov.

Etymology. We use the ancient name of Mount Merapi, “Candrageni”, as the species name. According to Serat Pustaka Raja Purwa, a classical javanese manuscript, written by R. Ng. Ranggawarsita, Mount Merapi was originally called Candrageni before it was renamed by Prabu Kusumawicitra during his reign over java. the name Candrageni is believed to reflect Merapi’s fiery and mystical nature, possibly derived from the words “Candra” (moon) and “Geni” (fire), symbolizing a balance between celestial energy and volcanic power. We believe that the presence of Philautus candrageni sp. nov. on Mount Merapi represents the biocultural harmony of this volcanic landscape

.Suggested English common name. Merapi Bush Frog.

Suggested Indonesian common name. Katak-semak Merapi 

Alamsyah Elang Nusa HERLAMBANG, Ade Damara GONGGOLI, Asrael RACHO, Hastin Ambar ASTI, Ganjar CAHYADI, Vestidhia Y. ATMAJA, Muhammad Alif FAUZI, Rury EPRILURAHMAN and Amir  HAMIDY. 2026. Revisiting the Taxonomy of Javan Philautus (Anura: Rhacophoridae), with the Description of A New Species.  Zootaxa. 5768(1); 29-56. DOI: doi.org/10.11646/zootaxa.5768.1.2 [2026-03-09]

 Researchgate.net/publication/401693573_Revisiting_the_Taxonomy_of_Javan_Philautus_with_the_Description_of_a_New_Species

[Botany • 2025] Impatiens bungerara (Balsaminaceae) • A New Species with flame-coloured flowers from Sumatra, Indonesia [Flora of Gayo Plateau I]

Impatiens bungerara Mustaqim

in Mustaqim, 2025.

openjournals.library.sydney.edu.au/TEL 

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Abstract

Impatiens bungerara Mustaqim (Balsaminaceae) is described here as a new endemic species from the northern Gayo Plateau, Sumatra, Indonesia. The new species is similar to I. vitellina Grey-Wilson but differs by branched stems, hairs in leaves and peduncles, and several flower morphologies. A detailed description, discussion, and colour photographs are given.

Keywords: herbs, montane plants, taxonomy, West Malesia, Impatiens, Balsaminaceae

Impatiens bungerara Mustaqim sp. nov.

Wendy Achmmad Mustaqim. 2025. Flora of Gayo Plateau I: A New Impatiens (Balsaminaceae) Species with flame-coloured flowers from Sumatra, Indonesia.  Telopea. 29; 173–176. DOI: 10.7751/telopea21366

https://openjournals.library.sydney.edu.au/TEL/article/view/20712

 facebook.com/botanywam/posts/1212990170649810

 Researchgate.net/publication/392363916_A_new_Impatiens_species_from_Sumatra_Indonesia

Abstrak: Impatiens bungerara Mustaqim (Balsaminaceae) dipertelakan di dalam tulisan ini sebagai spesies tumbuhan endemik Dataran Tinggi Gayo bagian utara, Sumatra, Indonesia. Spesies baru ini serupa dengan I. vitellina Grey-Wilson, tetapi berbeda karena batang yang bercabang, rambut pada daun dan tangkai perbungaan, dan beberapa morfologi bunga. Sebuah pertelaan rinci, diskusi, dan foto-foto berwarna disajikan.

Kata kunci, herba, Malesia Barat, taksonomi, tumbuhan pegunungan 

[Botany • 2026] Allium aralii (Amaryllidaceae) • A New Species of Allium sect. Codonoprasum from from Southeastern Anatolia (Türkiye) based on Morphological Characters and Phylogenetic Evidence

 

Allium aralii Balos Köse& Sonay,

in Balos, Köse, Sonay et Tunç. 2026. 

Kaplandağı soğanı  ||  DOI: doi.org/10.3390/plants15101574  

 instagram.com/marufbalos

 

Abstract

Allium aralii Balos, Köse Sonay sp. nov. (Amaryllidaceae, sect. Codonoprasum) is described as a new species from southeastern Anatolia, Türkiye. The species is morphologically distinguished from its closest relatives—A. euphraticum, A. turcicum subsp. turcicum, A. turcicum subsp. fusciflorum, and A. yilandaghense—by a unique combination of characters: blackish outer bulb tunics, semi-cylindrical solid leaves exceeding the inflorescence, an extremely long persistent two-valved spathe (4.5–28.0 cm), a lax hemispherical inflorescence (3–4 cm diam., 10–70 flowers), a goblet-shaped perigon with dentate inner tepals, exserted bicolored stamens (white at base and apex, purple in the middle), a reticulate-foveate ovary, and verrucate seed ornamentation with undulate anticlinal walls. Seed micromorphology examined by scanning electron microscopy (SEM) further supports species delimitation. Molecular phylogenetic analyses based on nuclear ITS and chloroplast matK sequences place A. aralii within a well-supported clade containing A. turcicum and allied species, corresponding to the eastern Mediterranean lineage of sect. Codonoprasum. ITS genetic distances between A. aralii and its morphologically closest relatives range 0.0632, falling within the typical interspecific range for Allium. The species is known from a single locality in Bozova district (Şanlıurfa) with fewer than 100 mature individuals and is assessed as Critically Endangered (CR) according to IUCN criteria. This discovery highlights southeastern Anatolia as an underexplored center of Allium diversification and underscores the importance of integrative taxonomy for species delimitation within this taxonomically complex group.

Keywords: Allium; endemic; sect. Codonoprasum; morphology; taxonomy; phylogeny; seed micromorphology

 Habit and reproductive morphology of Allium aralii.
 (A) With oak trees on Mount Kaplandağı. (B,C) Inflorescences showing lax hemispherical structure. (D) Detail of perigon and pedicel, illustrating tepal arrangement and coloration.

Additional views of Allium aralii.
(A–C) Variation in inflorescence morphology, highlighting density and flower arrangement. (D) Whole plant habit, showing relative proportions of leaves, scape, and inflorescence.

 Allium aralii (From holotype M. Balos 5616).
(A) Habit. (B) Bulb. (C,D) Leaf sheathing and stem. (E) Leaf cross-section. (F,G) Perigon. (H) Close-up view of the outer tepal. (I) Inner surface of open perigon and filament. (J) Outer–inner–outer tepal. (K) Inner surface of open perigon. (L) Outer surface of open perigon. (M) Anther (N) Ovary. (O) Ovary cross-section (P) Scape cross-section. (Q) Capsule. (R) Seed.

Allium aralii Balos, Köse Sonay sp. nov. 

 

Diagnosis: Allium aralii belongs to Allium sect. Codonoprasum and is morphologically distinguished from its closely related species—A. euphraticum, A. turcicum subsp. turcicum, and A. turcicum subsp. fusciflorum—by the following combination of characters: outer bulb tunics blackish (vs. brownish in A. euphraticum and A. turcicum subsp. turcicum, brownish-black in A. turcicum subsp. fusciflorum); bulbs 1.0–1.5 × 0.8–1.0 cm (vs. 1–2 cm in A. euphraticum, 1–2 cm in A. turcicum subsp. turcicum, 1–2 cm in A. turcicum subsp. fusciflorum); scape slender, 16–30 cm long (vs. 14–44 cm in A. euphraticum, 10–40 cm in A. turcicum subsp. turcicum and subsp. fusciflorum); leaves semi-cylindrical, solid, exceeding the inflorescence, 6.5–21.0 × 0.08–0.1 cm (vs. filiform, hollow, exceeding ...

Etymology: The species name ‘aralii’ was given in honor of the extraordinary academic achievements of the second author’s son, Aral Köse. Aral is an exceptional student who, after pursuing a dual degree in Electrical and Electronics Engineering and Mathematics at Boğaziçi University, has been awarded a full scholarship for a PhD program at the University of California, Santa Barbara (UCSB).

Turkish common name of the new species: Allium is called “Soğan” in Turkish. The author proposes “Kaplandağı soğanı” as a vernacular name for A. aralii according to the guidelines of Menemen et al. [2016].

 Mehmet Maruf Balos,Yavuz Bülent Köse,Veysel Sonay and Fatmanur Tunç. 2026. Allium aralii (Amaryllidaceae, sect. Codonoprasum), A New Species from Southeastern Anatolia (Türkiye) Based on Morphological Characters and Phylogenetic Evidence. Plants. 15(10), 1574; DOI: doi.org/10.3390/plants15101574 [21 May 2026]

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[Botany • 2025] Dombeya scorpioides (sect. Xeropetalum; Malvaceae) • A New Species from southeastern Madagascar

 

 Dombeya scorpioides Jourdain Fievet & Applequist, 
 

in Jourdain Fievet, Le Prchon, Dubuisson et Applequist, 2025.

DOI: doi.org/10.11646/phytotaxa.704.3.2

Illustration by Ludivine Lougou. 

Abstract

Dombeya scorpioides, a new endemic species of Dombeya (Malvaceae) from southeastern Madagascar, is described. Morphological analysis places this species within Dombeya section Xeropetalum as defined by Arènes. The species is distinguished by its unique biparous cyme, unusually elongated with mostly scorpioid terminal units. It is further differentiated from other species with similar narrow leaves by its hispid ovary with well-developed stellate hairs. Due to its restricted geographic distribution and past and future threats to its habitat, this species should be classified as Endangered according to IUCN Red List Criteria.

conservation status, endemism, scorpioid cyme, Eudicots

Morphological features of Dombeya scorpioides.
 A. Habit. B, C. Flower. D. Flower bud. e. Gynoecium. F. Part of theandroecium. g. Petal. H. Sepal, adaxial face. I. Sepal, abaxial face, with zoom on the hairs on the left.

Drawn from Rabevohitra et al.4121bis (P). Illustration by Ludivine Lougou, January 2025.

Dombeya scorpioides Jourdain Fievet & Applequist, sp. nov. 

Diagnosis:—Dombeya scorpioides Jourdain Fievet & Applequist differs from D. oblongipetala Arènes (1958: 438) in its longerinflorescences with often scorpioid branches, broader petals, a stellate-hispid ovary, and a longer style.

Lucile JOURDAIN FIEVET, Timothee LE PECHON, Jean-Yves DUBUISSON and Wendy APPLEQUIST. 2025. Dombeya scorpioides (Malvaceae: Dombeyoideae), A New Species from southeastern Madagascar.  Phytotaxa. 704(3); 232-238. DOI: doi.org/10.11646/phytotaxa.704.3.2 [2025-06-10]

[Botany • 2026] Platylepis avaratraensis (Orchidaceae) • A New Species from northern Madagascar and its taxonomic position in Goodyerinae

Platylepis avaratraensis Hermans & Nusb., 

in Hermans, Ranirison, Havinga, Iharivolana et Nusbaumer, 2026. 

DOI: doi.org/10.15553/c2026v811a1

 Abstract  

Taxonomy and molecular research in the genera of the subtribe Goodyerinae (Orchidaceae) from Madagascar and adjacent islands of the western Indian Ocean are discussed. The characteristics of Goodyera R.Br. and Platylepis A.Rich. are compared, their history is presented, and the respective species currently accepted for the region are detailed. A new species, Platylepis avaratraensis Hermans & Nusb., is described from the Sava region in northern Madagascar. It is most similar to P. humicola (Schltr.) Schltr. but differs by the wider leaves, shorter floral bracts, flower colour, narrower sepals and a lip with distinct calli. The distribution and ecology of the new species are discussed and its conservation status is provisionally assessed as “Endangered” following the IUCN Red List Categories and Criteria.

KEYWORDS: conservation, Goodyera, Goodyerinae, Madagascar, new species, ORCHIDACEAE, Platylepis, taxonomy

Platylepis avaratraensis Hermans & Nusb.
A: plant in its habitat; B: inflorescence with buds, flowers and young fruits; C: flower, front view with an insect (potential pollinator of the species); D: leaves; E: flowers, ovary and bracts from side view; F: fruits

 [A–D: Nusbaumer et al. 5055; E: Iharivolana & Havinga 47; F: Donati et al. 61] 

[Photos: A–D: L. Nusbaumer; E: A. Havinga; F: Iharivolana]

Platylepis avaratraensis Hermans & Nusb., sp. nov. 

Diagnosis — Platylepis avaratraensis is distinct from all other Madagascar species of the genus, and especially from P. humicola, by its long erect stem, narrowly elliptic to sub-ovate leaves (l/w ratio: 2.5–3/1), long inflorescence with a laxly flowered rachis in the apical third, floral bracts about as long as the pedicellate ovary, the rachis stem, ovary and exterior of the sepals and petals densely hirsute to villose with fine white hairs, the pale flowers with an orange-pink base to the lip, the obscurely 3-lobed lip with strongly involute margins, but without a spur, scattered thorn-like calli along the base, the curving epichile, ending in a fleshy, strongly recurved bilobed appendage, and the distinctly bifid rostellum.

Etymology — The specific epithet refers to the North (Avaratra in Malagasy) indicating its distribution in the northern part of Madagascar.

Johan Hermans, Patrick Ranirison, Alessandra Havinga, Iharivolana, Louis Nusbaumer. 2026. Platylepis avaratraensis (Orchidaceae), A New Species from northern Madagascar and its taxonomic position in Goodyerinae. Candollea. 81(1); 1-6. DOI: doi.org/10.15553/c2026v811a1 (17 June 2026)   

Les recherches taxonomiques et moléculaires sur les genres de la sous-tribu Goodyerinae de Madagascar et des îles adjacentes de l'océan Indien occidental sont discutées. Les caractéristiques de Goodyera R.Br. et Platylepis A.Rich. sont comparées, et leur histoire est présentée. Les espèces actuellement acceptées par les auteurs pour la région sont détaillées. Une nouvelle espèce d'orchidée, Platylepis avaratraensis Hermans & Nusb., est décrite dans la région de Sava, au nord de Madagascar. Elle est illustrée et comparée à d'autres espèces du genre. Elle est la plus proche de P. humicola (Schltr.) Schltr., mais se distingue par ses feuilles plus larges, ses bractées florales plus courtes, la couleur de ses fleurs, des sépales plus étroits et un labelle avec des callosités distinctes. La distribution et l'écologie de la nouvelle espèce sont discutées et son statut de conservation préliminaire est évalué comme «En danger» suivant les Catégories et Critères de la Liste rouge de l'UICN.

[Entomology • 2026] Scymnus tshunsii • The First termitophilous Ladybird Beetle (Coleoptera: Coccinellidae) from Microcerotermes Nests in Thailand

 

  Scymnus (Pullus) tshunsii Seki, Liang & Maruyama, 

in Seki, Liang , Hasin, Chiu et Maruyama, 2026.

DOI: doi.org/10.14411/eje.2026.017  

Termite nests host diverse symbiotic arthropods (termitophiles), many of which exhibit specialized morphological and behavioral adaptations to life within termite colonies. While numerous beetle families include well-known termitophiles, an association with termites has not yet been recorded in the family Coccinellidae (ladybird beetles). Here, we report the discovery of Scymnus (Pullus) tshunsii Seki, Liang & Maruyama, sp. n., based on adults and larvae collected from nests of Microcerotermes crassus Snyder, 1934, in Chiang Mai and Nakhon Ratchasima, Thailand, with additional adults captured at light traps. Although the adult morphology is typical for free-living Scymnini, the larva exhibits a highly unusual, soft-bodied, glabrous body form closely resembling termite workers - an apparent case of convergent evolution also seen in termitophilous rove beetles, scarabs, and phorid flies. The stark contrast between adult and larval morphology suggests stage-specific adaptations, with larvae more intimately integrated into the termite nest environment. Collecting adults at light traps indicates nocturnal dispersal, likely to locate new host colonies. This discovery represents the first confirmed termitophilous ladybird beetle and indicates that termite nests may support previously unrecognized ecological associations within Coccinellidae.

 

Keywords: New species, predators, Scymnini, taxonomy, termite

  Scymnus (Pullus) tshunsii sp. n.
1 – dorsal view; 2 – ventral view; 3 – lateral view;
4 – alive, lateral view; 5 – alive, ventral view.

Habitat of Scymnus (Pullus) tshunsii sp. n.
 32–34 – Scymnus (Pullus) tshunsii sp. n. (32 – adult; 33–34 – larvae); 35 – soldier of Microcerotermes crassus Snyder, 1934;
36 – forest environment; 37 – mound of Microcerotermes crassus Snyder, 1934.

 

Scymnus (Pullus) tshunsii Seki, Liang & Maruyama sp. n. 

 

Diagnosis. Scymnus (Pullus) tshunsii sp. n. is similar in external coloration to many species of Scymnini (e.g., Sasaji, 1971; Chen et al., 2015a, b; Wang & Chen, 2022), but can be readily distinguished by the structure of the genitalia. This species is placed in the subgenus Pullus Mulsant, 1846 based on the combination of the following characters: antennae composed of 11 antennomeres, prosternal process with well-developed lateral carinae, abdominal postcoxal lines recurved and complete, and female genitalia with a distinct infundibulum (Chen et al., 2015a). Chen et al. (l.c.) divided the subgenus Scymnus (Pullus) from mainland China and Taiwan into S. hingstoni, S. subvillosus, S. impexus, S. perdere, and S. sodalis groups. The new species lacks a prominent dorsal keel on the penis guide of ...

Etymology. The species is named after Tshun-Sî, the son of Wei-Ren Liang, the second author. His name, meaning “sowing in spring,” reflects the hope for the flourishing of future studies on termitophily in Thailand following this groundbreaking discovery. 

Distribution. Thailand (Chiang Mai, Nakhon Ratchasima)  

Ryōta SEKI, Wei-Ren LIANG, Sasitorn HASIN, Chun-I CHIU and Munetoshi MARUYAMA. 2026. The First termitophilous Ladybird Beetle: Scymnus (Pullus) tshunsii sp. n. (Coleoptera: Coccinellidae) from Microcerotermes nests in Thailand. Eur. J. Entomol. 123: 165-174. DOI: doi.org/10.14411/eje.2026.017  [May 14, 2026]

[Entomology • 2026] Montana tomorri & M. dani • Two New Species of Bush-crickets (Orthoptera: Tettigoniidae) from the Mountains of south Albania

 

(A–D) Montana tomorri and (G–H) Montana dani 

Puskás, Lemonnier-Darcemont, Willemse, Chobanov, Heller, Halimi, Darcemont, Kotitsa& Szövényi, 2026

DOI: doi.org/10.11646/zootaxa.5828.2.3

Abstract

Two new taxa of Platycleidini have been discovered in southern Albania, with one of them extending its range to the Greek border. In this paper, we analyse their morphological features, the characteristics of their acoustic signals, and phylogenetic relationships. These taxa clearly belong to the cluster of species comprising the four genera Montana, Amedegnatiana, Parnassiana, and Metrioptera s. str. The results of this study suggest their placement within the genus Montana, and we describe two new species: Montana tomorri sp. nov. and Montana dani sp. nov. Our findings highlight the urgent need for a reassessment of the tribe Platycleidini using integrative approaches that incorporate molecular and bioacoustic data, in order to better understand monophyletic groups and evaluate the consistency of current generic classifications.

Orthoptera, balkans, mountain endemism, Platycleidini, bioacoustics, phylogeny

habitus and colour variation of Montana tomorri sp. nov. from Tomorr Mt. (A–D) 

 

habitus and colour variation of M. dani sp. nov. from Trebeshina Mt. (E–H).

GELLÉRT PUSKÁS, MICHÈLE LEMONNIER-DARCEMONT, LUC WILLEMSE, DRAGAN CHOBANOV, KLAUS-GERHARD HELLER, ELTJON HALIMI, CHRISTIAN DARCEMONT, NEFELI KOTITSA, GERGELY SZÖVÉNYI. 2026. Montana tomorri and Montana dani (Orthoptera: Tettigoniidae), Two New Species of Bush-crickets from the Mountains of south Albania. Zootaxa. 5828(2); 225-255. DOI: doi.org/10.11646/zootaxa.5828.2.3 [2026-06-09]

[Ichthyology • 2026] Brachygobius jennie • A New bumblebee goby (Gobiiformes: Oxudercidae) from Hengqin Island, Guangdong Province, China

Brachygobius jennie  

 Tian, Wu, Lan, Lavoué & Huang, 2026. 

 DOI: doi.org/10.3897/zse.102.184142

Abstract

A new species of bumblebee goby, Brachygobius jennie sp. nov. (Teleostei, Oxudercidae), is described based on 31 specimens collected from the Hengqin Island, Guangdong Province, China. This new species is distinguished from all other valid species of Brachygobius by its extreme small size (SL < 9 mm) and distinctive number, position, size and shape of its black bars. It possesses four complete (forming ring) or nearly complete post-cephalic, relatively narrow bars, two of which are located posterior to the base of the anal fin. The first bar behind the head extends pigmentation to the first dorsal fin but does not reach the midventral line. The second bar, chevron-shaped and located below the second dorsal fin, extends pigmentation onto that fin and ventrally reaches the midventral line and the anal fin. Cytochrome oxidase subunit I-based analyses, including six out of the eight valid species of Brachygobius, show Brachygobius jennie sp. nov. to be more than 10% genetically divergent from other species, supporting the morphological diagnosis and confirming its distinct taxonomic status. With a maximum size of less than 9 mm SL (based on observations of 106 specimens), the new species is not only the smallest species of Brachygobius, but also one of the smallest known gobioid fishes.

Key Words: Fish, Gobioidei, integrative taxonomy, new species, miniature vertebrates

Diagnostic marking pattern comparison among all species of Brachygobius having four post-cephalic black bands, the last two located posterior to the base of the anal fin. Left column: schematic drawings highlighting diagnostic marking patterns based on information from type material and original descriptions; from top to bottom: 
Brachygobius jennie sp. nov. based on its description (this study); B. aggregatus, based on a drawing of a type specimen (plate 4 in Herre 1940); B. kabiliensis, based on the drawing of the holotype (fig. 19 in Inger 1958); and B. nunus, based on the drawing of a specimen of Gobius alcockii Annandale, 1906 (fig. 1 in Annandale 1906), a junior synonym of B. nunus, and the description of B. nunus by Hamilton (1822). Red arrowheads indicate diagnostic differences. Right column: photographs of live non-type specimens illustrating the corresponding left schematic patterns (all photos from the authors).

Live photographs of four paratypes of Brachygobius jennie sp. nov., illustrating intra-specific marking pattern.

Photographed by Mr. Haocong Yang and Mr. Danyang Zhou.

Brachygobius jennie sp. nov. 

 Jiangyan Tian, Jianyong Wu, Chunliu Lan, Sébastien Lavoué and Jianrong Huang. 2026. Brachygobius jennie, A New bumblebee goby (Teleostei, Oxudercidae) from Hengqin Island, Guangdong Province, China. Zoosystematics and Evolution. 102(3): 853-863.  DOI: doi.org/10.3897/zse.102.184142 [17 Jun 2026]

[Entomology • 2026] Oxyporus amigo • A New Species of Oxyporus Fabricius (Coleoptera: Staphylinidae: Oxyporinae) from western Mexico

 

 Oxyporus amigo

Navarrete-Heredia & Reyes-Hernández, 2026

 DOI: doi.org/10.11646/zootaxa.5837.1.7

Abstract

A new species, Oxyporus amigo, is described from Jalisco and Michoacán, Mexico. The new species is diagnosed and illustrated. Additionally, Oxyporus mexicanus Fauvel, 1865 is recorded for the first time from the state of Aguascalientes, based on specimens collected in Monte Grande, San José de Gracia.

Coleoptera, Oxyporinae, rove beetles, taxonomy, new species, Trans-Mexican Volcanic Belt

Habitus of Oxyporus amigo sp. nov.:
 1) holotype, male, dorsal view; 2) paratype, female, dorsal view. Scale bars: 1 mm

Aedeagus of Oxyporus amigo sp. nov. (holotype, male);
3) Parameral view; 4) Left lateral view; 5) Right lateral view; 6) Antiparameral view.

Scale bars: 1 mm.

JOSÉ L. NAVARRETE-HEREDIA and JOSÉ L. REYES-HERNÁNDEZ. 2026. A New Species of Oxyporus Fabricius (Coleoptera: Staphylinidae: Oxyporinae) from western Mexico and New Record from Aguascalientes for O. mexicanus Fauvel. Zootaxa. 5837(1); 154-160. DOI: doi.org/10.11646/zootaxa.5837.1.7 [2026-06-22]