Lychas C. L. Koch, 1845

(Figs. 13, 152–192, 198, 251, 407–408, 550)

Lychas C. L. Koch, 1845: 3 (in part), fig. 962, Tab. CCCXCVIII; Tikader & Bastawade, 1983: 40–107, figs. 9 9–285; Kovařík, 1997: 311–371, figs. 1–116, 122–123; Fet & Lowe, 2000: 158–169 (complete reference list until 1998); Kovařík & Ojanguren, 2013: 194–211, 361–378, figs. 1410–1600 (reference and synonymy list until 2013).

= Archisometrus Kraepelin, 1891: 75 (in part);

type species by subsequent designation (L. E. Koch, 1977: 123) Tityus marmoreus C. L. Koch, 1845 (syn. by Pocock, 1900: 35).

= Lychas (Distotrichus) Tikader & Bastawade, 1983: 41–51, figs. 99–129 (syn. by Vachon, 1986: 848).

= Lychas (Alterotrichus) Tikader & Bastawade, 1983: 52–71, figs. 130–184) (syn. by Kovařík, 1995: 188).

= Lychas (Endotrichus) Tikader & Bastawade, 1983: 71–107, figs. 185–285 (syn. by Kovařík, 1995: 188).

TYPE SPECIES. Lychas scutilus C. L. Koch, 1845 .

DIAGNOSIS. Total length 21.8– 90 mm. Sternum type 1, subpentagonal or subtriangular. Pedipalps orthobothriotaxic, type Aβ; patella trichobothrium d 3 external to dorsomedian carina; chela with 3 Eb trichobothria on manus. Cheliceral fixed finger with a single ventral denticle. Third and fourth legs with tibial spurs. Pectines with conspicuous or inconspicuous fulcra, rarely without fulcra. Pectinal teeth number 8–26. Movable fingers of pedipalps with six rows of granules and external and internal granules and apical row represented by 3 or 4 accessory granules. Total number of terminal granules 6 or 7. Carapace in lateral view with entire dorsal surface horizontal, or nearly so. Telson with distinct subaculear tooth. Fifth metasomal segment with carinae.

DISTRIBUTION. Lychas is one of the most widely distributed genera of the family Buthidae, with species present in Africa and Seychelles, and in the Oriental region from India to Melanesia.