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.

Published as part of Gama, Emanuel R. R., Skelley, Paul E. & Vaz-De-Mello, Fernando Z., 2026, Identification guide to the Aphodiinae (Coleoptera: Scarabaeidae) of Brazil, pp. 1-225 in European Journal of Taxonomy 1038 (1) on page 22, DOI: 10.5852/ejt.2026.1038.3175