NOTES ON THE GENUS BRACHISTOSTERNUS (SCORPIONES, BOTHRIURIDAE) IN CHILE, WITH THE DESCRIPTION OF TWO NEW SPECIES

摘要

Two new species of Brachistosternus from Chile are described, Brachistosternus (Leptosternus) cekalovici new species can be distinguished from most other species of the genus because the divided dorsal gland of the telson. The closest species are B. (L.) artigasi Cekalovic 1974 and B. (L.) negrei Cekalovic 1975, for which redescriptions are provided. Brachistosternus cekalovici has only been collected in "Tres Cruces", Coquimbo Province, Chile. Brachistosternus (Leptosternus) mattonii new species isalso described, This species is most closely related to B. (L.) donosoi Cekalovic 1974, from which it can be distinguished by its more densely granular tegument (especially on the ventral surface of the metasoma), hemispermatophore with more developed internal spines, and the lack of a telson gland. A redescription of B. donosoi is also provided. Both species are related to the Argentine plains species, whilst B. (L.) artigasi, B. (L.) cekalovici and B. (L.) negrei seem to be more related to the Andeanspecies of the subgenus Leptosternus.