Cnemaspis assamensis DAS & SENGUPTA, 2000
Can you confirm these amateur observations of Cnemaspis assamensis?
|Higher Taxa||Gekkonidae, Gekkota, Sauria, Squamata (lizards: geckos)|
|Common Names||E: Assam Day Gecko|
|Synonym||Cnemaspis (Cnemaspis) assamensis DAS & SENGUPTA 2000|
Cnemaspis assamensis — DAS & AHMED 2007
Cnemaspis assamensis — AGARWAL et al. 2021
|Distribution||NE India (Assam)|
Type locality: Mayeng Rserve Forest of Kamrup district, Assam.
|Types||Holotype: ZRC 2.4673 (Raffles Museum, Singapore)|
|Diagnosis||Differential Diagnosis (compared to regional congeners). A small-sized Cnemaspis that may be diagnosed from all other congeners by the following characters. Maximum snout–vent length of 33.2 mm; dorsal pholidosis heterogeneous with enlarged conical tubercles present on flanks; enlarged conical tubercles along mandibles; nasals in narrow contact with supralabials (Fig. 4); three postnasals, separated by a single scale; chin shields are in contact with infralabials; supralabials 8–9; infralabials 7. Ventral scales smooth, imbricate, mid–ventral scale rows 18; lamellae under manus IV 16–18; under pes IV 17–20 (Fig. 5); 11–12 femoral pores, 7–8 precloacal pores, and 2–3 poreless scales in males (Fig. 6); tail segmented.|
Cnemaspis assamensis differs from all other Indian congeners by the following characters. Pholidosis heterogeneous versus homogeneous in C. boiei (Gray), C. indica (Gray), C. jerdoni (Theobald), C. littoralis (Jerdon), C. wynadensis (Beddome), C. nilgirica Manamendra–Arachchi, Batuwita & Pethiyagoda, C. sisparensis (Theobald), C. kolhapurensis Giri, Bauer & Gaikwad, C. adii Srinivasulu, Kumar & Srinivasulu and C. palakkadensis Sayyed, Cyriac & Dileepkumar. Presence of enlarged tubercles on flanks versus tubercles absent in C. beddomei (Theobald), C. nairi Inger, Marx & Koshy, C. adii, C. otai Das & Bauer, C. sisparensis, C. wynadensis, C. anaikattiensis Mukherjee, Bupathy & Nixon, C. indica, C. yercaudensis Das & Bauer, C. girii Mirza, Pal, Bhosale & Sanap, C. australis Manamendra–Arachchi, Batuwita & Pethiyagoda, C. limayei Sayyed, Pyron & Dileepkumar, C. ajijae Sayyed, Pyron & Dileepkumar, C. mahabali Sayyed, Pyron & Dileepkumar and C. agarwalii Khandekar, C. kolhapurensis Giri, Bauer & Gaikwad, C. maculicollis Cyriac, Johny, Umesh & Palot, C. anamudiensis Cyriac, Johny, Umesh, & Palot, C. aaronbaueri Sayyed, Grismer, Campbell & Dileepkumar , C. chengodumalaensis Cyriac, Palot, Deuti & Umesh, C. zacharyi Cyriac, Palot, Deuti & Umesh and C. avasabinae Agarwal, Bauer & Khandekar. Presence of both femoral pores and precloacal pores versus presence of only femoral pores in C. indica, C. littoralis, C. jerdoni, C. wynadensis, C. sisparensis, C. heteropholis Bauer, C. nilgirica, C. kottiyoorensis Cyriac & Umesh, C. girii, C. flaviventralis Sayyed, Pyron & Dahanukar, C. limayei Sayyed, Pyron & Dileepkumar, C. ajijae, C. mahabali Sayyed, Pyron & Dileepkumar, C. anandani Murthy, Anandan, Sengupta & Deepak, C. amba Khandekar, Thackeray & Agarwal, C. koynaensis Khandekar, Thackeray & Agarwal, C. chengodumalaensis, C. zacharyi and C. magnifica Khandekar, Thackeray, Pal & Agarwal. Both femoral pores and precloacal pores present versus precloacal pores only in C. ornata (Beddome), C. beddomei, C. maculicollis, C. anamudiensis, C. aaronbaueri and C. avasabinae. Small-sized (SVL up to 33.3 mm) versus medium–sized Cnemaspis SVL 37 mm in C. andersonii (Annandale). Femoral pores 11–14 versus 2 in C. mysoriensis (Jerdon), 3–5 in C. gracilis (Beddome), 4–5 in C. wicksii (Stoliczka), 2–4 in C. goaensis Sharma, 3–4 in C. amboliensis Sayyed, Pyron & Dileepkumar, 4 in C. shevaroyensis (Khandekar, Gaitonde & Agarwal), 5–9 in C. thackerayi (Khandekar, Gaitonde & Agarwal), 2–4 in C. bangara Agarwal, Thackeray, Pal & Khandekar, 3 in C. graniticola Agarwal, Thackeray & Khandekar, 3–4 in C. yelagiriensis Agarwal, Thackeray, Pal & Khandekar, 2–3 in C. stellapulvis Khandekar, Thackeray & Agarwal, 3 in C. nicobaricus Chandramouli and single femoral pores in C. rishivalleyensis, Agarwal, Thackeray & Khandekar. Smooth ventral scales versus keeled in C. monticola Manamendra–Arachchi, Batuwita & Pethiyagoda).
Cnemaspis assamensis differs from congeners from Myanmar by the following characters. 10–13 femoral pores and 7–8 precloacal pores versus 4–5 femoral pores and 2–3 precloacal pores in C. thayawthadangyi Lee, Miller, Zug & Mulcahy; 3–5 femoral pores and 2–4 precloacal pores in C. tanintharyi Lee, Miller, Zug & Mulcahy, and absence of precloacal pores in C. siamensis Smith (Sengupta et al. 2021).
Variation. Four male and one female specimens, ranging from 30.6 mm to 32.27 mm in SVL, were collected from Basistha. Deviations in all the specimens from the Basistha population with respect to the type are as follows: supralabials range between 7–8 from the angle of jaw (holotype: 8–9); infralabials are from 7–8 (holotype: 7); lamellae on manus 9–11 on digit I, 12–15 on digit II, 15–17 on digit III, 16–18 on digit IV and 13–15 on digit V; lamellae on pes 9–11 on digit I, 14–17 on digit II, 16–18 on digit III, 17–20 on digit IV and 14–16 on digit V (Sengupta et al. 2021).
Coloration in life. The dorsum is brownish yellow in color; dorsum of head mottled brownish and yellow; supralabials and infralabials are brownish, interspersed with yellow; black irregular squarish nuchal spot present; W-shaped brown vertebral blotches are present starting from just behind the nape and extend behind pectoral region; spine like tubercles on dorso–lateral surface of the nape, flanks brownish yellow with indistinct dark brown bars; tail similar in colour to the dorsum, with irregular dark brown bands extending up to the tail tip. Mental pale white, light yellow tinge on the edges; gular, light yellow. Ventral region off white in colour (Fig. 1B) (Sengupta et al. 2021).
|Etymology||Named after the type locality.|