Coryogalops

Kovačić, Marcelo, Bogorodsky, Sergey V. & Mal, Ahmad O., 2014, Two new species of Coryogalops (Perciformes: Gobiidae) from the Red Sea, Zootaxa 3881 (6), pp. 513-531 : 518

Key to the species of Coryogalops

1a Pelvic fins separate........................................................................... C. anomolus

1b Pelvic fins united in pelvic disc........................................................................... 2

2a Upper margin of orbit with prominent tentacle.................................................... C. bulejiensis

2b No tentacle on upper margin of orbit...................................................................... 3

3a. Prepectoral area scaled......................................................................... C. sordidus

3b. Prepectoral area naked................................................................................. 4

4a Head and body black............................................................................. C. bretti

4b Head and body not black................................................................................ 5

5a A large dark maroon blotch or black spot on basal part of first 2 or 3 membranes of first dorsal fin..................... 6

5b No black blotches or spots on membranes of first dorsal fin................................................... 7

6a Longitudinal scale series 38 or 39; transverse scale rows 16; pectoral-fin rays 19; black spot larger than pupil on first dorsal fin covering first two membranes, weakly extended downwards as brown oblique band at third membrane to base of fin................................................................................................ C. monospilus

6b Longitudinal scale series 33–35; transverse scale rows 9; pectoral-fin rays 16 or 17; first dorsal fin with a nearly square, dark maroon blotch, larger than pupil, basally on second and third membranes, linked with first spine by a short dark band across the first membrane.............................................................. C. pseudomonospilus sp. nov.

7a Longitudinal scale series 34–46; pectoral-fin rays 19–23 (usually 21 or 22); free rays in pectoral fin 5–8; two broad transverse dark brown bars across nape; first dorsal fin with two oblique, moderately broad, dark bands; caudal-fin base with a dark brown arc............................................................................................ 8

7b Longitudinal scale series 26–35; pectoral-fin rays 15–19; free rays in pectoral fin 2 or 3; no bars across nape; no bands present in first dorsal fin, if present bands narrow; triangular dark mark may be visible on caudal-fin base...................... 9

8a Dorsal - fin rays VI + I,12 or 13; longitudinal scale series 38–46; eye diameter 3.6–3.8 in head length.......... C. adamsoni

8b Dorsal - fin rays VI + I,10 or 11; longitudinal scale series 34–36; eye diameter 4.0– 4.1 in head length............ C. william

9a Dorsal - fin rays VI + I,12; pelvic disc weakly emarginate; numerous scales of lower half of body covered with dark orange spots................................................................................. C. guttatus sp. nov.

9b Dorsal-fin rays VI + I,10 or 11; pelvic disc elliptical; scales of lower half of body without dark orange spots............ 10

10a Transverse scale rows 11; side of body with narrow midlateral stripe of alternating double white and black spots; scales ven- trally on body with dark brown edge............................................................ C. tessellatus

10b Transverse scale rows 8–10; no midlateral stripe visible; scales ventrally on body outlined with dark orange... C. ocheticus