Genus Cartwrightia Islas, 1958 Diagnosis Length 3.0– 3.4 mm. Body elongate, surface partially covered with argillaceous coating. Head with frontoclypeal and genal suture evident; clypeus sinuate, medially with longitudinal carina; anterior margin thickened, downwardly bent and acuminate medially. Pronotum coarsely punctate, punctures scattered; lateral margin sinuate; five incomplete longitudinal carinae present on disc, medial carina bifurcate medially. Elytra with odd interstriae carinate; even interstriae flat; striae not excavate, evidenced by row of coarse punctures lateral to interstriae; posterior declivity with a single big tubercle near posterior margin. Protibia with two to three teeth, first and second teeth closer than third; first tooth positioned apically. Basal tarsomere of meso- and metatarsus as long as the following three combined. Remarks Cartwrightia comprises three recognized species C. islasi Cartwright, 1967, C. cartwrighti (Mexico, El Salvador and Guatemala) and C. intertribalis Islas, 1958 (Mexico). For keys to all species see Cartwright (1967).

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 108, DOI: 10.5852/ejt.2026.1038.3175