Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

A new species of Achalinus Peters, 1869 (Squamata, Xenodermidae) from Hunan Province, China.

ABSTRACT: A new species, Achalinushunanensissp. nov., is described from middle and western Hunan Province based on the results of molecular systematics and morphological characters. It diverges from known congeners by a significant genetic divergence (p-distance 3.2%-16.9% based on CO1 mitochondrial gene), and it can be distinguished from all known congeners by the following morphological characters: (1) all dorsal scales strongly keeled, 23 rows throughout the body, the outmost one strongly keeled and enlarged; (2) tail relatively short, TaL/TL 0.221 ~ 0.225; (3) maxillary teeth 23; (4) the suture between internasals 2 × as long as that between prefrontals; (5) loreal one, subrectangular, LorH/LorL 0.62 ~ 0.70; (6) supralabials 6, the 4^th and 5^th touch the eye; (7) the two anterior temporals in contact with eye; (8) ventrals 163-165, subcaudals 69-72, not paired. This raises the number of known species of Achalinus to 24.

SUBMITTER: Ma S

PROVIDER: S-EPMC10848825 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

A new species of Achalinus Peters, 1869 (Squamata, Xenodermidae) from Hunan Province, China.

Ma Shun S Shi Sheng-Chao SC Xiang Sun-Jun SJ Shu Fu F Jiang Jian-Ping JP

ZooKeys 20230613

A new species, Achalinushunanensissp. nov., is described from middle and western Hunan Province based on the results of molecular systematics and morphological characters. It diverges from known congeners by a significant genetic divergence (p-distance 3.2%-16.9% based on CO1 mitochondrial gene), and it can be distinguished from all known congeners by the following morphological characters: (1) all dorsal scales strongly keeled, 23 rows throughout the body, the outmost one s ...[more]

PMID: 38328667

Similar Datasets

Discovery of a new cryptic Achalinus Peters, 1869 (Serpentes, Xenodermidae) species from Hunan Province, China.

Project description:A new species, Achalinusshenisp. nov., from central Hunan Province is described, based on the results of molecular systematics and morphological characters according to five specimens. Our molecular phylogeny inferred from the mitochondrial CO1 gene fragment revealed that this new species is most closely related to A.yunkaiensis, but a considerable amount of genetic divergence exists between them (p-distance ranging from 5.8% to 6.4%) and much distinct genetic divergence exists compared with other known Achalinus species (p-distance ranging from 10.4% to 15.8%), supporting its validity. Morphologically, it can be distinguished from its congeners by: (1) dorsal scales strongly keeled, 23 rows throughout the body, the outmost row smooth and significantly enlarged; (2) tail relatively short, TaL/TL 0.183 ~ 0.224; (3) the suture between internasals subequal to the suture between prefrontals; (4) loreal one, subrectangular, LorH/LorL 0.53 ~ 0.57; (5) ventrals 161-170, anal entire, subcaudals 55-61, not paired; (6) the length of supraocular equal to or longer than the length of upper anterior temporal; and (7) vertebral line inconspicuous and subcaudal streak absent. Currently, 27 species of Achalinus are known in the world, amongst which 20 species are distributed in China. Moreover, a key to species of the genus Achalinus is provided in this study.

| S-EPMC10556878 | biostudies-literature

A new species of the genus Achalinus (Squamata, Xenodermatidae) from southwest Hunan Province, China.

Project description:A new species of xenodermid snake, Achalinusnanshanensis H. Li, L.-Q. Zhu, Z.-Q. Zhang & X.-Y. Mo, sp. nov., is described based on three specimens collected from Nanshan National Park and Tongdao County of southwest Hunan Province. This new species is genetically distinct amongst its congeners with the mitochondrial COI uncorrected p-distance ranging from 4.4% (in A.yangdatongi) to 17.7% (in A.meiguensis). In addition, this new species can be distinguished from its congeners by a combination of the following morphological characters: (1) dorsal scales with 23 or 25 rows throughout and strongly keeled; (2) tail relatively longer so that TaL/ToL = 0.215-0.248; (3) length of suture between internasals significantly longer than that between prefrontals, LSBI/LSBP = 1.66-1.84; (4) single loreal scale present; (5) SPL 6 in number, with the fourth and fifth contacting eye; (6) IFL 6 in number, with the first three touching the first pair of chin shields; (7) TMP is 2-2-4/2-2(3)-4, with the anterior pair elongated and in contact with the eye; (8) ventrals 2 + 147-158; (9) subcaudals 64-77, unpaired; (10) dorsal body brownish black, with a bright yellow neck collar extending to the head and abdomen in the occipital region. The recognition of the new species increases the number of described Achalinus species to 28, of which 21 are found in China.

| S-EPMC10809267 | biostudies-literature

A New Species of the Genus Achalinus (Squamata: Xenodermidae) from the Dabie Mountains, Anhui, China.

Project description:A new species of Xenodermid snake, Achalinus dabieshanensissp. nov., was described based on three specimens (two female and one male) collected from the Dabie Mountains of western Anhui Province. It can be distinguished from known congeners by a significant genetic divergence in the mitochondrial gene fragment COI (p-distance ≥ 9.4%) and the following combination of characteristics: (1) length of the suture between the internasals being distinctly shorter than between the prefrontals; (2) a single loreal; (3) dorsal scales strongly keeled, in 23 rows throughout the body; (4) two pairs of prefrontals; (5) six supralabials; (6) five infralabials; (7) temporals 2 + 2 + 3 (or 2 + 2 + 4); (8) 141-155 ventrals; (9) 45-55 subcaudals, unpaired; (10) anal entire; (11) weakly iridescent tinged, uniform, brown to black dorsum with vertebral scales and about three adjacent dorsal scales dark brown forming a longitudinal vertebral line from posterior margin of parietals to tail tip; (12) light brown venter, ventral shields wide, visible on both sides, light brown flanks, giving the appearance of a black subcaudal streak. The recognition of the new species increases the number of described Achalinus species to 22.

| S-EPMC9952718 | biostudies-literature

Lysimachiafenghwaiana (Primulaceae), a new species from Hunan Province, China.

Project description:A new species, Lysimachiafenghwaiana G.Hao & H.F.Yan (Primulaceae), from Hunan Province, China, is described and illustrated. This new species belongs to Lysimachiasubgen.Lysimachiasect.Nummularia and is morphologically similar to L.crista-galli and L.carinata, but is distinctive in its leaf shape and arrangement of flowers. It can be further distinguished from L.crista-galli by the absence of calyx lobule spur, and from L.carinata by the black glandular striates in the corolla lobes, rather than punctate.

| S-EPMC10196811 | biostudies-literature

A new species of Odorrana (Anura, Ranidae) from Hunan Province, China.

Project description:A new species, Odorrana sangzhiensis sp. nov., is described, based on five specimens from Sangzhi County, Zhangjiajie City, Hunan Province, China. Molecular phylogenetic analyses, based on mitochondrial 12S rRNA and 16S rRNA gene sequences, strongly support the new species as a monophyletic group nested into the O. schmackeri species complex. The new species can be distinguished from its congeners by a combination of the following characters: (1) body size medium (SVL: 42.1-45.1 mm in males, 83.3-92.7 mm in females); (2) dorsolateral folds absent; (3) tympanum diameter 1.53 times as long as the width of the disc of finger III in females; 2.3 times in males; (4) dorsal skin green with dense granules and sparse irregular brown spots; males with several large warts on dorsum; (5) two metacarpal tubercles; (6) relative finger lengths: I ≤ II < IV < III; (7) tibiotarsal articulation beyond the tip of the snout; (8) ventral surface smooth in females; throat and chest having pale spinules in adult males; (9) dorsal limbs green or yellow green with brown transverse bands; and (10) paired external vocal sacs located at corners of the throat, finger I with light yellow nuptial pad in males. This discovery increases the number of Odorrana species to 59 and those known from China to 37.

| S-EPMC7985132 | biostudies-literature

A new freshwater species of Pinnularia (Bacillariophyta) from Hunan Province, China.

Project description:This study describes a new species of Pinnularia, P.hupingensissp. nov., on the basis of light and scanning electron microscope images. Pinnulariahupingensissp. nov. is characterised by its linear valve outline, extremely divergent striae, and very large hexagonal central area occupying ca. 1/5-1/8 of the valve length. The primary and secondary sides of the valve and the internal proximal raphe fissures are discussed. The new species is compared to similar taxa of the genus Pinnularia.

| S-EPMC10829046 | biostudies-literature

Lysimachia xiangxiensis (Primulaceae), a new species from limestone area in Hunan Province, central China.

Project description:A new species of Lysimachia, L. xiangxiensis (Primulaceae), is described and illustrated from western Hunan, central China. The species is similar to L. melampyroides in plant densely strigillose, leaves subglabrous adaxially, and flowers usually solitary in axils of upper leaves, but differs by the succulent leaves, the creeping or ascending stems 15-25 cm long, and the suborbicular to broadly elliptic corolla lobes. This new species is also supported by a molecular phylogenetic analysis of some Lysimachia species based on ITS sequence data.

| S-EPMC7052036 | biostudies-literature

Four new species of the genus Otacilia Thorell, 1897 from Hunan Province, China (Araneae, Phrurolithidae).

Project description:Four new species of the genus Otacilia Thorell, 1897 are reported from Hunan Province, China: Otacilia hippocampasp. n., Otacilia yangmingensissp. n., Otacilia curvatasp. n., and Otacilia submicrostomasp. n. All new species are described based on both sexes. In addition, the 55 known Otacilia species are divided into four species groups.

| S-EPMC5102421 | biostudies-literature

Three new species of the primitively segmented spider genus Songthela (Mesothelae, Liphistiidae, Heptathelinae) from Hunan Province, China

Project description:Abstract Three new species of the primitively segmented spider genus Songthela Ono, 2000 are identified and described from Hunan Province, China, based on morphological characters of males and females: S.anhua Zhang & Xu, sp. nov. (♂♀), S.longhui Zhang & Xu, sp. nov. (♂♀), and S.zhongpo Zhang & Xu, sp. nov. (♂♀). All the new Songthela species belong to the multidentata-group according to male palp and female genital morphology.

| S-EPMC10194079 | biostudies-literature

Two new species of the primitively segmented spider genus Songthela from Hunan Province, China (Mesothelae, Liphistiidae).

Project description:This study reports two new species of the primitively segmented spider genus Songthela from Hunan Province, China, based on morphological characters: S. huangyang sp. nov. (♂♀), S. xiangnan sp. nov. (♂♀). Additional material also facilitates a more accurate description of S. goulouensis (Yin, 2001) with the first description of the male. Nucleotide data for the barcoding gene, cytochrome c oxidase subunit I (COI), is also provided for these three species.

| S-EPMC7280323 | biostudies-literature