Identification Key for Sri Lankan Agamid Lizards
| (1) |
a. |
Male with well-developed gular sac extending more or less than chest or abdomen ....(2) |
| |
b. |
Gular sac rudimentary or absent in both sexes ............................................................ (4) |
| (2) |
a. |
Four digits on feet, five on hands and Tympanum distinct ........................... Sitana ponticeriana |
| |
b. |
Five digits on feet and hands, Tympanum covered with scales ...................... (3) |
| (3) |
a. |
A black patch present on gular sac .................................................... Otocryptis nigristigma |
| |
b. |
A reddish brown patch present on gular sac .................................... Otocryptis wiegmanni |
| (4) |
a. |
Rostral appendage distinct ................................................................. (5) |
| |
b. |
Rostral appendage not distinct or absent........................................... (10) |
| (5) |
a. |
Rostral appendage rounded and Well developed dorsal crest ............. Lyriocephalus scutatus |
| |
b. |
Rostral appendage not rounded ................................................................ (6) |
| (6) |
a. |
Rostral appendage simple, restricted to rostral scale alone ............................................. (7) |
| |
b. |
Rostral appendage complex, comprising more scales than rostral alone ........................ (8) |
| (7) |
a. |
Rostral appendage rudimentary in both sexes (appendage is not longer than eye-nostril distance) .................Ceratophora erdeleni |
| |
b. |
Rostral appendage prominent in males (appendage is longer than eye-nostril distance) .................... ........... Ceratophora stoddartii |
| (8) |
a. |
Rostral appendage laterally compressed ......................................... Ceratophora tennentii |
| |
b. |
Rostral appendage not laterally compressed ................................... (9) |
| (9) |
a. |
A prominent squamosal process present ............................................ Ceratophora aspera |
| |
b. |
squamosal process absent, it represent by enlarged scale ................ Ceratophora karu |
| (10) |
a. |
Dorsal scales elongate, irregular, unequal and tail prehensile ..................... (11) |
| |
b. |
Dorsal scales more or less equal –sized, regularly arranged and Tail greatly elongated, not prehensile..(12) |
| (11) |
a. |
Non-carinate, granular mid-gular scales, throat with longitudinal brown streaks .............Cophotis dumbarae |
| |
b. |
Carinate, imbricate mid-gular scales, throat with dark bands each sides. .................. Cophotis ceylanica |
| (12) |
a. |
No Spines around the tympanum and Scales on sides pointing backwards and downwards ........... Calotes liocephalus |
| |
b. |
Spines around the tympanum present............................... (13) |
| (13) |
a. |
Dorsal crest rudimentary ..................................... Calotes ceylonensis |
| |
b. |
Dorsal crest well present .................................... (14) |
| (14) |
a. |
A row of compressed spines above tympanum ...................................... (15) |
| |
b. |
Two separated spines above tympanum ................................................ (16) |
| (15) |
a. |
Ventral scales larger than dorsal scales and Scales on sides pointing backwards and downwards .................................................. Calotes nigrilabris |
| |
b. |
Ventral scales not larger than dorsal scales and Scales on sides pointing backwards and upwards ........................................................ Calotes calotes |
| (16) |
a. |
Scales on sides pointing backwards and upwards .............................. Calotes versicolor |
| |
b. |
Scales on sides pointing backwards and downwards ......................... (17) |
| (17) |
a. |
Gular sac with oblique black bands, shoulder pit black, dorsinuchal crest consists of twelve-thirteen spines ........... Calotes desilvai |
| |
b. |
Gular sac without oblique black bands, shoulder pit white or cream, dorsinuchal crest consists of ten spines. .......... Calotes liolepis |
| Identification of Varanus Lizards |
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