Microgecko, Nikolsky, 1907

Gholamifard, Ali, Rastegar-Pouyani, Nasrullah & Rastegar-Pouyani, Eskandar, 2019, A new species of the genus Microgecko Nikolsky, 1907 (Sauria: Gekkonidae) from the southern Zagros Mountains, Iran, Zootaxa 4648 (3), pp. 435-454 : 451

Key to the species and subspecies of the genus Microgecko modified from Leviton & Anderson (1972); Szczerbak & Golubev (1996); Anderson (1999) and Gholamifard et al. (2016)

1a. Internasals not differentiated from adjacent scales; four scales border nostril; postmentals absent, or one small pair not in contact with one another; males with 2–5 preanal pores................................................. M. depressus

1b. Internasals large, followed by a second pair of enlarged shields; four or five scales border nostril; postmentals present or absent................................................................................................ 2

2a. Postmental shields absent.......................................................................... M. latifi

2b. Postmental shields present.............................................................................. 3

3a. A single pair of postmentals............................................................................. 4

3b. Two or three pairs of postmentals......................................................................... 6

4a. Postmentals in contact or not in contact with one another; five distinct dark crossbars of body with white posterior margins.......................................................................................... M. h. fasciatus

4b. Postmentals not in contact with one another; dark crossbars of body indistinct or absent, sometimes two dorsolateral series of white spots.......................................................................................... 5

5a. Dark crossbars of body indistinct or absent; five scales border nostril; supranasal scales mostly in contact..... M. h. helenae

5b. No dorsal crossbars on body, with two light dorsolateral series of white spots; four scales border nostril; supranasal scales separated by two scales.............................................................. M. varaviensis sp. nov.

6a. Two pairs of postmentals; dark dorsal crossbars on body and tail distinct......................................... 7

6b. Three pairs of postmentals; dark dorsal crossbars on body absent.................................. M. chabaharensis

7a. Dark dorsal crossbars of body and tail broader than interspaces...................................... M. p. bakhtiari

7b. Dark dorsal crossbars of body and tail as wide or narrower than interspaces....................................... 8

8a. Dark dorsal crossbars less than half the width of interspaces, or sometimes absent........................ M. p. persicus

8b. Dark dorsal crossbars as wide as or slightly narrower than interspaces............................. M. p. euphorbiacola