Onthophagus sp. 2

Cárdenas-Bautista, Johann Stephens, Parada-Alfonso, Jenny Andrea & Carvajal‑Cogollo, Juan E., 2020, Dung beetles (Scarabaeidae, Scarabaeinae) of the Foothills-Andean Forest strip of Villavicencio, Colombia, Check List 16 (4), pp. 821-839 : 835

Onthophagus sp. 2

Figure 2D

Materials examined. COLOMBIA • 1, 5.42 mm (mean); Meta, Villavicencio, Vereda El Carmen, “Las Pesebreras” Farm ; 04°08ʹ21.52″N, 073°39ʹ37.54″W; 635 m a.s.l.; 18 Oct. 2018; Cárdenas Johann and Parada Jenny leg.; open pasture; Crplt2; UPTC-In-00088 . • 1, 5.42 mm (mean); Meta, Villavicencio, Vereda El Carmen, “La Loma” Farm ; 04°08ʹ26.69″N, 073°40ʹ01.28″W; 729 m a.s.l.; 17 Oct.2018; Cárdenas Johann and Parada Jenny leg.; wooded pasture; Crpat1; UPTC-In-00089 . • 1, 5.42 mm (mean); Meta, Villavicencio, Vereda El Carmen, Caño Blanco–Caño Buque ; 04°08ʹ22.14″N, 073°40ʹ15.77″W; 799 m a.s.l.; 16 Oct. 2018; Cárdenas Johann and Parada Jenny leg.; riparian forest; Crbrt2; UPTC-In-00090 .

Identification. This morphospecies can be distinguished from the other species and morphospecies of collected Onthophagus , in the case of males, by the smooth surface of the head with horns of variable size towards the posterior margin; anterior region of the clypeus slightly projected forward; pronotum bright and dotted, with a vertical slope in the anterior margin (pers. obs.). In females, the head is marked with a front clypeal suture forming a small transverse carina; with or without conical horns towards the posterior edge of the head; and the pronotum is slightly stippled and shiny without vertical slope towards the anterior margin (pers. obs.). Elytra striae are marked; lightly dotted interstriae; dotted and hairy pseudo epipleuron (pers. obs.).

Distribution. This rare morphospecies was found sporadically throughout the area, with only 11 individuals in

the riparian forest, high secondary forest and open grassland habitats.