Monographic revision of the genus Aegidinus Arrow (1904) and generic phylogeny of the world Orphninae (Coleoptera: Scarabaeidae: Orphninae). Colby, Julia Insecta Mundi 2009 2009-05-08 2009 76 1 41 Colby Colby 2009 [192,545,611,635] Insecta Hybosoridae Aegidinus Animalia Coleoptera 19 18 Arthropoda species cornutus sp. nov.   Fig. 44-45, 82-83   Type material.  Holotypemale at HAHClabeled: a) “ Sinop 12 o31' S, 55 o37' W// BR 163 km500 a 600 / / Mato Grosso, Brasil//  350 m  IX.1974// Alvarenga & Roppacol.” (printed, rectangular label)/ b) “Coleção // M. Alvarenga” (printed, rectangular label)/ c) “ H. & A. Howden Collection ex. A. Martinezcoll.” (printed, rectangular label with a black border)/ d) my handwritten type label. One paratypemale at HAHClabeled: a) “Oct. 9 76 // Brasil// Minas Gerais// Sinópolis // Alvarengaleg. // Coll. Martínez” (handwritten on a rectangular label)/ b) “H. & A. Howden Collection ex.A. Martinez coll.” (printed, rectangular label with a black border)/ c) “  Aegidinusn. sp // Det. F. C. Ocampo 2005” (handwritten and printed, rectangular label with a black border)/ d) my printed paratypelabel.  Type Locality. Brazil, Mato Grosso, Sinop.   Description. Holotypemale( Fig. 83). Length 11.5 mm; width 6.4 mm. Color: Head, pronotum and elytra black to piceous. Venter and legs piceous to reddish brown. Head: Frons moderately convex medially, punctate; punctures sparse, small. Frontoclypeal suture obsolete. Clypeus moderately densely punctate, punctures small to moderate. Anterior margin of clypeus produced into slightly reflexed, subtriangular, erect or nearly erect horn with carina extending from base of horn to each eye canthus. Pronotum: Surface punctate; punctures moderately dense, moderate to large in size, concentrated on sides. Basal margin with impressed line and row of punctures. Disc of pronotum with transverse, oval, punctate fovea; punctures moderately dense to dense, occasionally contiguous, moderate to large in size, occasionally transverse. Anterior margin of pronotum with median, laterally compressed horn; apex broadly truncate and weakly emarginate. Elytra: Punctures of striae elongate or slightly vermiform, occasionally V-shaped at base. Stria 1 obsolete near base. Stria 2 obsolete halfway to apical umbone, with a few punctures at base. Lateral margin adjacent to humerus with 9 (right) or 10 (left) setose crenulations. Legs:Protibia without apical denticle. Genitalia: Fig. 44 -45.   Paratype.One male. Length 10.7 mm; width 5.7 mm. The paratypediffers from holotypein the following respects: Color: Reddish brown. Pronotum: Horn on anterior margin smaller, apex not emarginate. Elytra: Elytral punctures generally elongate, rarely vermiform or V-shaped; lateral margin adjacent to humerus with 6 (right) or 7 (left) setose crenulations.   Diagnosis.Male genitalia ( Fig. 44-45) are the primary means of identification for this species and are unique in form. The two typespecimens examined both have pronounced pronotal horns, which is unique to this species. It is unclear if a minor male or female would have this character. Females are not known for this species.   Etymology.From the Latin “  cornutus”, meaning bearing horns or horned, in reference to the unique pronotal horn of this species.   Distribution(Fig. 82). Brazil. Two specimens examined from HAHC. BRAZIL(2):  Mato Grosso: Sinop (BR 163 km500 a 600) (1).  Minas Gerais: Sinópolis (1).  Temporal Distribution.September (1), October (1).  Natural History.The holotypewas collected at an elevation of  350 m. 1974-09 HAHC, BR Roppa & M. Alvarenga & H. & A. Howden Collection & A. Martinez Brazil 350 -12.516666 Sinop 1293 -55.616665 19 18 1 Mato Grosso holotype