Aidophus impressus

Aidophus impressus (Petrovitz, 1970) Figs 1B, 33A Didactylia impressa Petrovitz, 1970: 230. Aidophus impressus – Dellacasa et al. 2000b: 202. Diagnosis Length 3.8–4.2 mm. Head with fine and coarse punctures; punctures symmetrically distributed; coarse punctures mixed with fine ones; coarse punctures more abundant on frons; clypeus with small emargination and weakly gibbous; finely punctate; gena obtusely angled. Pronotum with punctures of two sizes; larger punctures closer near lateral margins; posterior angles rounded. Elytral interstriae microreticulate; finely punctate; elytral interstriae eight and ten more elevated than others. Apical spine of metatibia somewhat shorter than the first tarsomere; first tarsomere slightly longer than the following three tarsomere combine. Material examined BRAZIL – Piauí • 2 ♂♂, 2 ♀♀; Floriano; 21 Oct. 2010; L. Carvalho leg; Cerrado s. str.; CEMT. Sexual dimorphism Males with head broader and more transverse that of female. Metatibia of male with first tarsomere about the same length of the superior apical spur; first tarsomere slightly longer than the following three tarsomeres. The female first tarsomere is shorter than the superior apical spur and shorter than the following three tarsomeres combined.