Abstract
The genus Brachystomella, established by Agren (1903), is currently composed of 67 described species worldwide (Najt & Weiner 1996; Bellinger et al, 2010). Of these, 31 are known from the neotropical region (Weiner & Najt 2001), of which eight (Abrantes et al. 2010) have so far been found in Brazil: B. agrosa Wray, 1953, B. aspera (Borner, 1906), B. ceciliae Fernandes & Mendonca, 2004, B. villalobosi Cassagnau & Rapoport, 1962, B. platensis Najt & Massoud, 1974, B. septemoculata Denis, 1931 and the cosmopolitan B. parvula (Schaffer, 1896) and B. contorta Denis, 1931. The majority(53) of the species in the genus have 8+8 eyes with the exception of five species: B. septemoculata Denis, 1931 with 7+7 eyes, B. sexoculata Massoud, 1967, with 6+6 eyes, and B. chilensis (Rapoport & Rubio, 1963), B. montebella Najt & Palacios-Vargas, 1987 and B. zerpa Weiner & Najt, 2001 with 5+5 eyes. The new species is the first in the genus to have only 2+2 eyes.
NSTL