A new species of the genus Tityus C. L. Koch, 1836 (Scorpiones, Buthidae) from the state of Bahia, Brasil. A new species of the genus Tityus C.L.Koch, 1836 (Scorpiones, Buthidae) is described from Anagé (36º44'14"S - 08º08'41"W) and Poções (31º47'14"S - 21º55'40"W), state of Bahia, Brazil. Tityus aba n. sp. belongs to the Tityusbahiensis group Lourenço, 2002 characterized by medium sized specimens, ranging from five to seven cm in length, reddish-brown or brownish coloration patterns and basal middle lamellae of female pectines not dilatated in most species. Within the group, this species is close to the Tityus stigmurus complex and is more related to Tityusstigmurus (Thorell, 1876), Tityusmartinpaechi Lourenço, 2001 and Tityus melici Lourenço, 2003. T. aba n. sp. is distinguished from T. stigmurus by the color of the prossoma, which is almost black, by the higher number of pectinal teeth and by the larger body size. It is distinguished from T. martinpaechi mainly by the absence of dark spots on pedipalps and legs and also by the larger size of the specimens, and from T. melici , by the absence of dark confluent spots over the tergites and longitudinal strip between ventral keels of segments I to IV of the metasoma. Tityus aba n. sp. includes medium to large sized scorpions ranging from 6.0 to 7.65 cm, yellowish brown coloration pattern with an almost black carapace, with three longitudinal dark strips over the tergites, and with the dorsal medial keels of segment II to IV with a larger terminal granule that becomes spinoid on segments III and IV. The males are distinguished from the females by the slender pedipalps and more dilatated metasomal segments IV and V.
Scorpiones; Buthidae; Tityus aba n.sp.; Bahia; Brazil
