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| Cnemaspis enneaporus Rujirawan, Aksornneam & Aowphol, in Rujirawan, Aksornneam, Yodthong, Pawangkhanant, Stuart et Aowphol, 2025. |
Abstract
A new species of the Cnemaspis siamensis group is described from Wang Khrachae District, Kanchanaburi Province, western Thailand based on morphological and molecular data. The new species, Cnemaspis enneaporus Rujirawan, Aksornneam & Aowphol, sp. nov., is distinguished from other species in the C. siamensis group by having the combination of SVL 42.2 mm in adult male (n = 1), 43.7 mm in adult female (n = 1); eight supralabials; seven or eight infralabials; ventral scales smooth; nine continuous precloacal pores in male; 17 or 18 paravertebral tubercles linearly arranged; tubercles on lower flanks present; lateral caudal furrows present; no caudal tubercles in the lateral furrows; ventrolateral caudal tubercles present on original portion of tail; caudal tubercles not encircling tail; subcaudals smooth; no enlarged median subcaudal row; two postcloacal tubercles on each side of tail; no shield-like subtibial scales; subtibial scales smooth; no enlarged submetatarsal scales; 26–28 subdigital lamellae on the fourth toe; sexually dimorphic for dorsal and ventral colour pattern; prescapular marking absent; gular marking absent; and yellow colouration in life on all ventral surfaces of head, body and tail in adult male. Phylogenetically, the new species is recovered as the sister taxon to C. huaseesom, but the two species are separated by 8.3–9.4% uncorrected pairwise genetic divergences in the mitochondrial NADH dehydrogenase subunit 2 gene and flanking tRNAs.
Key words: Cnemaspis enneaporus, karst formations, molecular phylogenetics, morphology, Tenasserim Mountain Range
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| Adult male holotype of Cnemaspis enneaporus sp. nov. (ZMKU R 01100) immediately after euthanasia. A dorsal (supranasal and internasal scales outlined in black) and ventral views of head (mental, postmental, and first infralabial scales outlined in black) B lateral view of head C palmar view of the right manus D plantar view of the right pes E precloacal region with precloacal pores (outlined in black). |
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| Adult male holotype of Cnemaspis enneaporus sp. nov. (ZMKU R 01100). A dorsolateral view in life B dorsal and ventral views immediately after euthanasia. Scale bar: 10 mm. |
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| Adult female paratype of Cnemaspis enneaporus sp. nov. (ZMKU R 01101). A dorsolateral view in life B dorsal and ventral views immediately after euthanasia. Scale bar: 10 mm. |
Cnemaspis enneaporus Rujirawan, Aksornneam & Aowphol, sp. nov.
Diagnosis: Cnemaspis enneaporus sp. nov. can be distinguished from all other species in the C. siamensis group by having the unique combination of the following characters: SVL 42.2 mm in adult males (n = 1), 43.7 mm in adult females (n = 1); eight supralabials; seven or eight infralabials; ventral scales smooth; nine continuous precloacal pores in single male specimen; 17 or 18 paravertebral tubercles linearly arranged; tubercles on lower flanks present; lateral caudal furrows present; no caudal tubercles in the lateral furrows; ventrolateral caudal tubercles present on original portion of tail; caudal tubercles not encircling tail; subcaudals smooth; no enlarged median subcaudal row; two postcloacal tubercles on each side of tail; no shield-like subtibial scales; subtibial scales smooth; no enlarged submetatarsal scales; 26–28 subdigital lamellae on the fourth toe; sexually dimorphic for dorsal and ventral colour pattern; prescapular marking absent; gular marking absent; and yellow colouration in life on all ventral surfaces of head, body and tail in adult male.
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| Habitat of Cnemaspis enneaporus sp. nov. at the type locality, Wang Khrachae Subdistrict, Sai Yok District, Kanchanaburi Province, Thailand. A landscape view of karst formation B karst microhabitat structure C adult female of Cnemaspis enneaporus sp. nov. (not collected) photographed in situ at the type locality. |
Etymology. The species epithet enneaporus is derived from ennea (G.) for nine and porus (L.) for pore in reference to the male holotype of the new species having nine precloacal pores.
Suggested common name: Sai Yok Rock Gecko (English), Jing Jok Niew Yao Sai Yok ,จิ้งจกนิ้วยาวไทรโยค (Thai).
Attapol Rujirawan, Akrachai Aksornneam, Siriporn Yodthong, Parinya Pawangkhanant, Bryan L. Stuart and Anchalee Aowphol. 2025. Another New Karst-dwelling Rock Gecko in the Cnemaspis siamensis group (Reptilia, Gekkonidae) from Kanchanaburi Province, western Thailand. ZooKeys. 1226: 1-24. DOI: doi.org/10.3897/zookeys.1226.138464
