Blackburneus richteri (Schmidt, 1911) Figs 2E–G, 34A Aphodius richteri Schmidt, 1911b: 21. Aphodius (Blackburneus) richteri – Schmidt 1913: 138. Blackburneus richteri – Skelley et al. 2007: 2. Diagnosis Length 2.5–3.0 mm. Body shagreened and testaceous. Head with moderated punctures, these progressively larger near frons; clypeus emarginate, medially weakly gibbous; frontoclypeal suture present, finely impressed. Pronotum dense fine and coarse punctures. Elytra with interstriae convex, with a singe row of punctures. Material examined BOLIVIA • 4 specs; 2 Feb. 1960; R.B. Cumming leg.; CEMT. – Santa Cruz • 2 specs; Sta 60 mi. N of Saavedra Exp.; CEMT. BRAZIL – Distrito Federal • 1 spec.; Planaltina, Embrapa Cerrados; 15°35′54″ S, 47°42′51″ W; 18 Nov. 2005; O. Oliveira leg.; agricultural area; light; CEMT • 1 spec.; same data as for preceding; 2 Dec. 2005; CEMT • 3 specs; same data as for preceding; 5 Jan. 2006; CEMT • 1 spec.; same data as for preceding; 15°36′16″ S, 47°44′16″ W; 24 Feb. 2006; native cerrado; CEMT • 1 spec.; same data as for preceding; 15°36′20″ S, 47°42′16″ W; 3 Nov. 2006; CEMT • 2 specs; same data as for preceding; 15°35′54″ S, 47°42′51″ W; 24 Mar. 2006; agricultural area; CEMT. – Maranhão • 3 specs; Carolina, Fazenda Cincorá; 17–22 Oct. 2009; F. Limeira-de-Oliveira et al. leg.; light; CEMT. – Mato Grosso do Sul • 1 ♂; Selvíra, Santa Ofélia farm; 1 May 2004; C.A.H. Flechtmann leg.; Brachiaria decumbens pasture; bovine dropping; CEMT • 3 ♂♂; same data as for preceding; 12 Jun. 2004; CEMT • 1 ♀; same data as for preceding; 26 Feb. 2005; CEMT • 1 ♀; same data as for preceding; UNESP farm; 16 Jan. 2005; Brachiaria brizantha pasture; CEMT • 1 ♂; same data as for preceding; 20°22′41″ S, 51°25′10″ W; 29 Oct. 2005; F. Oikawa leg.; Brachiaria decumben s pasture; black light; CEMT • 1 ♀; same data as for preceding; 12 Nov. 2009; CEMT • 1 ♀; same data as for preceding; 5 May 2010; CEMT • 1 ♀; same data as for preceding; 20°53′41″ S, 51°24′39″ W; 6 Feb. 2007; F.W. Mesquita leg.; CEMT • 1 ♂; same data as for preceding; 20°22′53″ S, 51°24′39″ W; 7 Nov. 2006; CEMT • 1 ♀; same data as for preceding; 30 Jan. 2007; CEMT. Sexual dimorphism Male protibial apical spine downwardly and outwardly bent; males with distal teeth of protibia with proximal margin dilated and angled. Collecting information Specimens can be found in pastures of Urochloa brizantha and Urochloa decumbens and in areas of native Cerrado. Specimens are attracted to cattle dung, light and can be captured by flight intercept. The species can be found at altitudes up to 1600 m (Dellacasa et al. 2011; Mesquita et al. 2017).

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 pages 35-36, DOI: 10.5852/ejt.2026.1038.3175