Thursday, May 9, 2024

[Botany • 2023] Krenakanthus ribeiranus (Bromeliaceae: Bromelioideae) • A “hairy situation” in Minas Gerais, Brazil: A striking New Species of Krenakanthus covered with uniseriate trichomes

 
 Krenakanthus ribeiranus 

in Leme, Gonella, Couto, Fernandez, De Carvalho, De Almeida et Mariath, 2023. 
 
Abstract
A new species of Krenakanthus, a member of the bromelioid “Cryptanthoid complex”, is described based on plants discovered through collaborative citizen science. Krenakanthus ribeiranus and its only congener K. roseolilacinus are endemic to the “João Pinto Center of Biodiversity”, a still poorly explored region with Campos Rupestres and associated vegetation in the Rio Doce Valley, in eastern Minas Gerais state, Brazil. The unusual combination of morphological characters of K. ribeiranus, highlighted by plant delicacy and almost all leaf and flower parts covered by uniseriate, hair-like trichomes, is illustrated and discussed in comparison with K. roseolilacinus, including leaf and seed anatomy, as well as pollen morphology. This micro-endemic species is assessed as Critically Endangered, reinforcing the need for strategy to protect the biodiversity of the region. The morphology of the new species validates and strengthens the diagnostic flower characters used in the circumscription of Krenakanthus, suggesting as secondary diagnostic characters the habit, stature, and leaf conformation.  

Keywords: Monocots, anatomy, Campos Rupestres, Cryptanthoid complex, João Pinto Center of Biodiversity, morphology, uniseriate trichomes

 Krenakanthus ribeiranus (J.C.S. Ribeiro 001):
 A. General aspect of the shaded rocky habitat alongside creeks at the type locality. B–D. Subpopulations at the type locality composed of individuals growing on organic-rich, shallow soils accumulated on sandstone rock surfaces among mosses.  
Photos: J.C.S. Ribeiro.


  


 A–F.  Krenakanthus ribeiranus (J.C.S. Ribeiro 001):
A Habit in three stages of flower development. B. Habit, highlighting an individual in fruit stage. C. Small-sized aspect of the leaf rosette in an adult individual. D. Frontal view of the fan blade-like corolla. E. Lateral view of the corolla. F. Abundant seedlings growing not far from mother-plants.
Photos: J.C.S. Ribeiro.

Krenakanthus ribeiranus (J.C.S. Ribeiro 001; A, C, F–G, I, K, M) and K. roseolilacinus (Leme 8922; B, D–E, H, J, L, N):  
 A–B. Frontal view of the corolla. C–D. Petals and stamens. E. Petal. F. Pistil and the stamens, highlighting the unequal filaments. G–H. Sepals. I–J. Fruits. K–L. Anthers. M–N. Stigma.
 Bars = 5 mm (C–E, J). Bars = 2 mm (F–I). Bars = 1 mm (K–N). 
  Photos: A. J.C.S. Ribeiro. B–N. E. Leme.


Elton M. C. Leme, Paulo M. Gonella, Dayvid R. Couto, Eduardo P. Fernandez, Jordano D. T. De Carvalho, Pedro S. De Almeida and Jorge E. A. Mariath. 2023. A “hairy situation” in Minas Gerais, Brazil: A striking New Species of Krenakanthus (Bromeliaceae: Bromelioideae) covered with uniseriate trichomes. Phytotaxa. 619(1); 39-62. DOI: 10.11646/phytotaxa.619.1.2

   

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[Paleontology • 2024] Phylogenetic Position of Kinnareemimus khonkaenensis (Dinosauria: Theropoda: Ornithomimosauria) from the Lower Cretaceous of Thailand


Kinnareemimus khonkaenensis  Buffetaut, Suteethorn & Tong, 2009

in Samathi, 2024. 

Abstract
A small-bodied ornithomimosaur, Kinnareemimus khonkaenensis Buffetaut, Suteethorn, and Tong 2009, from the Lower Cretaceous Sao Khua Formation of northeastern Thailand was first reported in 1995, then named in 2009. It is the only report of this group in Southeast Asia and was concluded to be a member of Ornithomimosauria, more derived than Harpymimus and Garudimimus but more basal than Archaeornithomimus. Since then, a few published studies have analyzed the phylogenetic position of Kinnareemimus but failed to find it within the clade Ornithomimosauria. Here, the phylogenetic analyses for assessing the relationships of Kinnareemimus within Ornithomimosauria were performed. The results suggested it might be a basal ornithomimosaur or belongs to the subclade Deinocheiridae. Kinnareemimus shares with deinocheirids the proximally projected cnemial crest and the shape of the fibula in proximal view. Its metatarsal III shows subarctometatarsalian condition with metatarsal III pinched between II and IV but visible in anterior view proximally, which might have evolved independently from other ornithomimids. However, the basal position of Kinnareemimus could also be due to the immaturity and the incomplete nature of this animal.

Reptilia, Ornithomimosauria, Southeast Asia, subarctometatarsalian metatarsus, Early Cretaceous Sao Khua Formation, Paleobiogeography



 
Adun SAMATHI. 2024. Phylogenetic Position of Kinnareemimus khonkaenensis (Dinosauria: Theropoda: Ornithomimosauria) from the Lower Cretaceous of Thailand. Zootaxa. 5448(1); 67-84. DOI: 10.11646/zootaxa.5448.1.4


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[Herpetology • 2024] Herpetoreas davidi • Taxonomic Reassessment of the Herpetoreas xenura (Wall, 1907) (Serpentes: Natricidae) from Myanmar with Description of A New Species

 

Herpetoreas davidi Nguyen, Lalremsanga, Biakzuala & Vogel, 2024
[B, C] Herpetoreas xenura (Wall, 1907)
[H, I] Hebius khasiensis (Boulenger, 1890)

in Nguyen, Lalremsanga, Biakzuala & Vogel, 2024.

ABSTRACT
The review of the taxonomic status of Herpetoreas xenura species complex, based on morphological and molecular data, revealed a new species from Myanmar, which we describe as Herpetoreas davidi sp. nov. from the Rakhine Yoma Elephant Wildlife Sanctuary in Rakhine State. It is suggested to be a sister species to Herpetoreas pealii and Herpetoreas xenura sensu stricto, and can be separated from the latter species by a combination of morphological and scalation characters, and by its pattern. Another population from the Htamanthi Wildlife Sanctuary, Sagaing Region, was previously confused with H. xenura. However, as a closer examination of its morphology, shows it to be closer to Hebius khasiensis, we herein tentatively refer to this population as Hebius khasiensis, pending further molecular data confirming its taxonomic status. Consequently, we propose to temporarily remove Herpetoreas xenura from the fauna of Myanmar. Further studies, especially in the northwestern region of Myanmar, such as near border with India in Chin Hills and Naga Hills, are required. An updated key for the species of Herpetoreas is also provided.

Keywords: distribution, Herpetoreas davidi sp. nov., Indo-Burmese region, Naga Hills, Rakhine Hills, taxonomy


A–F. Herpetoreas xenura (Wall, 1907) in life. A–C. Mizoram, India. D–F. Kaptai National Park, Chittagong, Bangladesh.
G–I. Hebius khasiensis (Boulenger, 1890) in life. G. Tamdil, Mizoram, India. H. Bhamo, Kachin, Myanmar. I. Nakhon Thai, Phitsanulok, Thailand.
Photos by G. Vogel (A–C), Reza (2010) (D–E), P. Shinde (G), K.C. Ouyang (H), and P. Pawangkhanant (I).


Herpetoreas davidi sp. nov.
A–F. Holotype, ♂(CAS 222969) in preservation. A. Lateral view of the head, right side. B. Lateral view of the head, left side. C. Ventral view of the head. D. Dorsal view of the head. E. General dorsal view. F. General ventral view.
G–H. Paratype, ♀ (CAS 220256). G. General dorsal view. H. General ventral view.
Photos by G. Vogel.


Tan Van Nguyen, Hmar Tlawmte Lalremsanga, Lal Biakzuala and Gernot Vogel. 2024. Taxonomic Reassessment of the Herpetoreas xenura (Wall, 1907) (Squamata: Serpentes: Natricidae) from Myanmar with Description of A New Species. European Journal of Taxonomy. 932(1), 158–203. DOI: 10.5852/ejt.2024.932.2519


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[Botany • 2023] Corydalis mianxianensis (Papaveraceae, sect. Cheilanthifoliae) • A New Species from limestone cliffs in central China, and Notes on the Shaanxi Record of C. saxicola


Corydalis mianxianensis D.Wang, 

in D. Wang, Xu, Li, Sun et L. Wang, 2023. 

Abstract
Corydalis mianxianensis, a new species of C. sect. Cheilanthifoliae Lidén (Papaveracae), is described from Qinling-Daba mountains and adjacent Minshan mountains, central China. It is similar to C. moupinensis Franch., but it differs from the latter in racemes with 30–50(–70) flowers, spur being much shorter than limb of upper petal, and arcuate to strongly contorted fruits. These two species are also much different in stigma and ecology as well. In addition, we confirmed that the record of C. saxicola G.S.Bunting in Shaanxi Province as documented in the Chinese floras was a misidentification of this new species.

Eudicots, chasmophytes, Corydalis sect. Cheilanthifoliae, Minshan Mountains, Qinling-Daba mountains, taxonomy

 Habitat, habit and morphology of Corydalis mianxianensis (D. Wang et al. 210003).
A. habitat; B. inflorescence; C. fruits; D-G. flower showing the lateral view (D), front view (E), adaxial view of flower showing the apex of upper petal (F) and abaxial view of flower showing the apex of lower petal (G).

 
Corydalis mianxianensis D.Wang 


Dong Wang, Xiaodong Xu, Niya Li, Qian Sun and Liang Wang. 2023. Corydalis mianxianensis (Papaveraceae), A New Species from limestone cliffs in central China, and Notes on the Shaanxi Record of C. saxicola G.S.Bunting. Phytotaxa. 609(3); 233-239. DOI: 10.11646/phytotaxa.609.3.6 
  Researchgate.net/publication/373360688_Corydalis_mianxianensis_a_new_species_from_central_China
 www.bilibili.com/read/cv26246550    勉县黄堇

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[Crustacea • 2021] Caprella nojimaensis • A New Species of the Genus Caprella (Amphipoda: Caprellidae) Collected from a Gorgonian at 1497 m Depth off Boso Peninsula, Central Japan

 

 Caprella nojimaensis 
 Takeuchi, Shiraishi & Mimori, 2021


Abstract
Caprella nojimaensis sp. nov. (Crustacea: Amphipoda: Caprellidae), inhabiting the gorgonian Calcigorgia gracilis Matsumoto, van Ofwegen, and Bayer, 2019, is described based on a specimen from 1497 m depth in the Nojima Submarine Canyon, off Boso Peninsula, central Japan. The species is closely related to C. gracillima Mayer, 1890, but differs from the latter in gnathopod 2 being positioned near the anterior margin of pereonite 2 and in the presence of paired small mid-dorsal projections on pereonites 2 and 5. The body colour of live material is pale pink, with mouth parts and gnathopod 2 fringed with darker pink, revealing protective colouration that matches that of the host gorgonian. The clinging behaviour in situ is “upright” as recorded by the remotely operated vehicle Hyper-Dolphin, and the presence of dense swimming setae on antenna 2 suggests that the caprellid feeds by filtering material suspended in the bathyal zone.

Keywords: Amphipoda, bathyal depth, Caprella, new species, off Boso Peninsula, protective colouration


 Caprella nojimaensis sp. nov., holotype, mature female, 20.69 mm body length, NSMT-Cr 29015, photographed at the cold laboratory of Tokyo Sea Life Park (Edogawa-ku, Tokyo, Japan).

 Four individuals of  Caprella nojimaensis sp. nov. (red arrows) attached to the gorgonian and on rock and surrounding sediment at around 1500 m depth in the Nojima Submarine Canyon, off Boso Peninsula, central Japan.

 Caprella nojimaensis sp. nov. (yellow arrow), holotype, mature female, 20.69 mm body length, NSMT-Cr 29015, attached to the gorgonian Calcigorgia gracilis Matsumoto, van Ofwegen, and Bayer, 2019 at 1497 m depth; Nojima Submarine Canyon, off Boso Peninsula, central Japan.

Order Amphipoda Latreille, 1816 
Family Caprellidae Leach, 1814 
Genus Caprella Lamarck, 1801 

Caprella nojimaensis sp.nov. 

Etymology. The specific name nojimaensis is derived from the name of the collection site of the new species, Nojima Submarine Canyon. 


Ichiro Takeuchi, Momoko Shiraishi and Ryosuke Mimori. 2021. A New Species of the Genus Caprella (Crustacea: Amphipoda: Caprellidae) Collected from a Gorgonian at 1497 m Depth off Boso Peninsula, Central Japan. Species Diversity. 26(2); 225-233. DOI: 10.12782/specdiv.26.225
 twitter.com/Species_Divers/status/1436221455482589191


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[Botany • 2022] Ribes fujisanense (Grossulariaceae) • A New obligate epiphytic Species discovered in Central Japan


Ribes fujisanense S. Sakag. & Mit. Oishi,

in Sakaguchi, Oishi, Takahashi, Matsuo, Hirota, Suyama et Setoguchi, 2022.

Abstract
Ribes fujisanense S. Sakag. & Mit. Oishi (Grossulariaceae), an obligate epiphytic gooseberry, is described here for the first time. It is narrowly endemic in the cool-temperate forests of Mt. Fuji and adjacent areas of central Japan. Ribes fujisanense is morphologically most similar to R. ambiguum Maxim., but is distinguished by the reddish apex of the calyx lobes, branchlets armed with prickles, petioles with long glandular trichomes and more deeply lobed leaf blades. Phylogenetic analysis based on genome- wide markers showed that the two species are considerably divergent, even though R. fujisanense fully overlaps the distribution of the wide-ranging R. ambiguum, indicating that they are biologically isolated species.

Keywords: epiphyte, Grossulariaceae, Ribes, SNPs, taxonomy





Ribes fujisanense S. Sakag. & Mit. Oishi, sp. nov. 

Similar to Ribes ambiguum Maxim., but distinguished by multiple characteristics including color of the calyx lobes (pale greenish with apex tinged reddish in R. fujisanense vs. entirely pale greenish in R. ambiguum), branchlets (armed with prickles vs. unarmed), trichomes on abaxial surface of petiole (long glandular vs. short non-glandular or rarely glabrous), and leaf blade (deeply lobed and tender vs. shallowly lobed and robust); phylogenetically independent from R. ambiguum; restricted to cool-temperate cloud forests (1,300–1,750 m a.s.l.) on Mt. Fuji and surrounding areas of central Honshu, Japan.

  


Shota Sakaguchi, Mitsuru Oishi, Daiki Takahashi, Ayumi Matsuo, Shun K. Hirota, Yoshihisa Suyama and Hiroaki Setoguchi. 2022. Ribes fujisanense (Grossulariaceae): A New obligate epiphytic Species of Gooseberry Discovered in Central Japan.   Acta Phytotax. Geobot. 73(1); 49-56. DOI: 10.18942/apg.202109
 www.jstage.jst.go.jp/article/apg/73/1/73_202109/_pdf/-char/en

  


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[Herpetology • 2024] Dixonius chotjuckdikuli • A New micro-endemic, Limestone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius) from Phetchaburi Province, western Thailand


Dixonius chotjuckdikuli 
Donbundit, Sumontha, Suthanthangjai, Suthanthangjai & Pauwels, 2024

  Khao Ebid Leaf-toed Gecko | จิ้งจกดินเขาอีบิด  ||  DOI: 10.11646/zootaxa.5447.4.5 
photo: Nonn Panitvong  facebook.com/NonnP
facebook.com: Natthaphat Chotjuckdikul
 
Abstract
We describe Dixonius chotjuckdikuli sp. nov. from Khao Ebid (Mount Ibit), Khao Yoi District, Phetchaburi Province, western Thailand. The new, limestone-dwelling species differs from all currently recognized species of Dixonius by the following combination of morphological characters and pattern: maximal known snout-vent length of 45.6 mm, 18 (rarely 16) longitudinal rows of dorsal tubercles; 31 to 34 paravertebral scales; 18 (rarely 16) longitudinal rows of ventral scales across the abdomen; 20 to 22 interciliary scales; 5 or 6 precloacal pores in males, no pores in females; a marked canthal stripe extending beyond the shoulder; and a blotched dorsal pattern in males, females and juveniles. This description brings the number of Dixonius species to 17, among which seven species are endemic to Thailand.

Reptilia, Gekkota, morphology, taxonomy, Southeast Asia



 Dixonius chotjuckdikuli sp. nov.

 
Nattasuda Donbundit, Montri Sumontha, Maneerat Suthanthangjai, Winai Suthanthangjai and Olivier S. G. Pauwels. 2024. Another New micro-endemic, Limestone-dwelling Leaf-toed Gecko (Gekkonidae: Dixonius) from Phetchaburi Province, western Thailand.  Zootaxa. 5447(4); 531-546. DOI: 10.11646/zootaxa.5447.4.5
  facebook.com/NonnP/posts/10228658137611337
facebook.com/UNOHO/posts/10168906646615357

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[Crustacea • 2024] Palaemon parvibrachium • A New shallow water Species of the palaemonid shrimp Genus Palaemon Weber, 1795 (Decapoda: Caridea) from Japan


Palaemon parvibrachium 
Komai & Hanai, 2024

 
Abstract
During a survey of the shallow water decapod fauna in the Miura Peninsula, Kanagawa Prefecture, central Japan, four specimens of a new palaemonid shrimp, Palaemon parvibrachium n. sp., were collected from sea grass beds of Nanozostera japonica (Ascherson & Graebner) Tomlinson & Posluszny, 2001. The new species appears morphologically similar to P. serrifer (Stimpson, 1860), one of the most common representatives of Palaemon Weber, 1795 in Japanese waters, but the short carpus of the second pereopod and the different live colouration readily differentiate the new species from the latter. A DNA barcode (a partial fragment of the mitochondrial CO1 gene), as well as a partial fragment of the mitochondrial 16S rRNA gene, are provided to genetically characterize the new species.

 16S rRNA, COI, Ena Bay, Palaemon parvibrachium, sea grass beds, Nanozostera japonica, Caridea 



Palaemon parvibrachium n. sp.


Tomoyuki Komai and Motoya Hanai. 2024. A New shallow water Species of the palaemonid shrimp Genus Palaemon Weber, 1795 (Decapoda: Caridea) from Japan. Zootaxa. 5443(3); 417-430. DOI: 10.11646/zootaxa.5443.3.6

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[Crustacea • 2023] Stoliczia setoiyenica • A New Species of Freshwater Crab (Decapoda: Brachyura: Potamidae) from southern Thailand


 Stoliczia setoiyenica
 Tan, Lheknim & Ng, 2023
 
 
Abstract
A new species of freshwater crab is described from southern Thailand, near the border with Peninsular Malaysia. Species of Stoliczia are characterised by their relatively flat carapace, a third maxilliped exopod that possesses no or a very short flagellum, and a conical male gonopod terminal segment that lacks or only has a very low dorsal fold. Stoliczia setoiyenica, new species, most closely resembles S. perlensis and S. kedahensis from northern Peninsula Malaysia but can be easily distinguished from congeners by differences in carapace and male gonopod morphology. Comparisons to the two known Thai Stoliczia species, S. panhai and S. ekavibhathai, are also provided for completeness.

Crustacea, Satun Province, Isthmus of Kra, Potamoidea, taxonomy



Stoliczia setoiyenica, new species


 Zhi Wan Tan, Vachira Lheknim, and Peter K. L. Ng. 2023. Stoliczia setoiyenica, A New Species of Freshwater Crab from southern Thailand (Crustacea: Decapoda: Brachyura: Potamidae).  Zootaxa. 5360(4); 531-544. DOI: 10.11646/zootaxa.5360.4.4
 twitter.com/ZhiWanTan/status/1786297840156995868

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[Crustacea • 2024] Sundathelphusa roberti • A New Species of Freshwater Crab (Brachyura: Gecarcinucidae) from Highlands in Batangas, Luzon, Philippines


Sundathelphusa roberti
Ng & Mendoza, 2024

 
Abstract
A new species of freshwater crab belonging to a group of species morphologically similar to Sundathelphusa philippina (Von Martens, 1868) is described from highlands in the province of Batangas, southern Luzon, Philippines. Sundathelphusa roberti new species, however, differs from members of this group by the position and strength of the epigastric and postorbital cristae, form of the posterior epistomal margin, shape of the third maxillipeds, and structure of the male first gonopod. The new taxon is the 35th species of Sundathelphusa known from the Philippines.

Keywords: Gecarcinucoidea; comparative taxonomy; description; montane species; Southeast Asia;

 
Sundathelphusa roberti new species


 Peter K. L. Ng and Jose C. E. Mendoza. 2024. A New Species of Freshwater Crab, Sundathelphusa roberti (Brachyura, Gecarcinucidae) from Highlands in Batangas, Luzon, Philippines.  Crustaceana. 97(3-4); 221–233. DOI: 10.1163/15685403-bja10364


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[Entomology • 2024] Hercostomus obtusus & H. squamatus • New Species and Records of the Genus Hercostomus Loew (Diptera: Dolichopodidae) from Thailand Mangroves, with Notes on the Hercostomus Fauna of Singapore Mangroves


 Hercostomus obtusus
Samoh & Grootaert, 2024

(photos: A. Samoh).
 
Abstract
The long-legged fly genus Hercostomus Loew, 1857 is reported for the first time from mangrove habitats in Thailand. Two new species, H. obtusus sp. nov. and H. squamatus sp. nov. are described based on external morphology and supported by NGS barcoding. Four described species, namely, H. brevicornis Zhang, Yang & Grootaert, 2008, H. brevidigitalis Zhang, Yang & Grootaert, 2008, H. lanceolatus Zhang, Yang & Grootaert, 2008, and H. plumatus Zhang, Yang & Grootaert, 2008, previously known only from Singapore mangroves, are recorded for the first time from Thailand mangroves. In addition, species distributions are mapped and taxonomic notes are provided.

Diptera, taxonomy, NGS barcodes, Southeast Asia


 Hercostomus obtusus sp. nov. Male and female habitus
(photos: Abdulloh Samoh).

Hercostomus squamatus sp. nov.

Etymology. The specific epithet, squamatus refers to the numerous squamiform bristles on the apical border of the cercus.

Bionomics. This species was collected from shaded areas of mangrove creeks and back mangroves, which had an abundance of small pebbles, sand, and muddy soils in their vicinity.

Distribution. THAILAND: Phang Nga and Satun provinces, SINGAPORE: Pulau Semakau (Semakau Island).


 Hercostomus squamatus sp. nov. Male and female habitus
 (photos: Abdulloh Samoh).
 
Hercostomus obtusus sp. nov.

Etymology. The specific epithet, obtusus refers to the obtuse tip of the first flagellomere.

Bionomics. This species was collected from shaded areas of the back mangrove.

Distribution. THAILAND: Phang Nga and Satun provinces (Andaman Seacoasts, southern Thailand). SINGAPORE: common in the back mangrove all over the country.

 
Abdullah Samoh and Patrick Grootaert. 2024. New Species and Records of the Genus Hercostomus Loew (Diptera: Dolichopodidae) from Thailand Mangroves, with Notes on the Hercostomus Fauna of Singapore Mangroves.  Zootaxa. 5446(2); 179-204. DOI: 10.11646/zootaxa.5446.2.2
 facebook.com/AbdullahSamoh/posts/7486445694724499
Researchgate.net/publication/380208310_New_species_and_records_of_the_genus_Hercostomus_from_Thailand_Singapore_mangroves

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