Ataeniopsis parallelus (Petrovitz, 1961) Figs 8A–B, 39B Ataenius parallelus Petrovitz, 1961b: 148. Ataenius (Ataeniopsis) parallelus – Chalumeau 1992: 196. Ataeniopsis parallelus – Stebnicka 2003b: 104. Diagnosis Length 2.8–3.0 mm. Body dark red. Head alutaceous, clypeus slightly sinuate with somewhat large denticles; sinuate area less than 1/3 the length of frons; frontoclypeal suture inconspicuous, present as a faint elevated line. Pronotum densely punctate with large and moderate punctures; posteriorly marginate. Elytra length approximately twice as long as pronotum; interstriae punctured by fine and inconspicuous punctures. Pygidium with three to four fine punctures along median carina; anterior margin glossy and convex. Material examined BRAZIL – Amazonas • Castanho-Careiro, AM-359 Km 39; 3°43′59″ S, 60°20′09″ W; 6–7 Nov. 2010; Rafael et al. leg.; light; CEMT. Sexual dimorphism Males with third abdominal ventrite wider than fourth. Females with body longer than males, with second and fourth ventrite of the same width. Collecting information Specimens were collected with light trap.

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 64, DOI: 10.5852/ejt.2026.1038.3175