Aegidium peresfilhoi Frolov, Akhmetova

Frolov, Andrey V., Akhmetova, Lilia A. & Vaz-de-Mello, Fernando Z., 2017, Revision of the mainland species of the Neotropical genus Aegidium Westwood (Coleoptera: Scarabaeidae: Orphninae), Journal of Natural History 51 (19 - 20), pp. 1035-1090 : 1075-1076

Aegidium peresfilhoi Frolov, Akhmetova and Vaz-de-Mello, sp. nov.

( Figure 12 (a–f))

Type locality

Brazil, Mato Grosso, CotriguaÇu, SÃo Nicolau Ranch.

Type material examined

Holotype, male at CEMT labeled ‘ BRASIL: Mato Grosso. CotriguaÇu . Faz SÃo Nicolau . Luz. III- 2008. O. Peres Filho’ ( Figure 12 (b)). Paratypes: 3 males at CEMT and ZIN labeled ‘ BRASIL: Mato Grosso. CotriguaÇu. Faz SÃo Nicolau . Luz. II-2008. O. Peres Filho’; one male at CEMT labeled ‘ BRASIL: Mato Grosso. CotriguaÇu. Faz SÃo Nicolau . Luz. 30-I-2008. O. Peres Filho’.

Diagnosis

Ae. peres fi lhoi sp. nov. is most similar to Ae. geayi but differs from it in having shorted parameres narrower than phallobase in dorsal view and sparser punctation of upper side of body.

Description

Holotype, male ( Figure 12 (a,c–e)). Body length 12.0 mm. Colour uniformly brown.

Anterior margin of frontoclypeus slightly convex in middle, slightly sinuate each side of medial convexity, rounded laterally, slightly uplifted. Frontoclypeus coarsely punctate with rounded punctures separated by about 0.5 puncture diameters basally becoming smaller and sparser towards anterior margin.

Eye width about 1/7 distance between eyes in dorsal view.

Pronotum with widely rounded lateral margins, as wide as elytra, 1.4 times wider than length, 0.6 times length of elytra. Posterior angles narrowly rounded. Anterior margin bordered, with a row of large punctures interrupted medially. Base of pronotum with a row of large, rounded punctures. Pronotal disc feebly excavated. Lateral pronotal processes obtuse in lateral view, their apices not protruding past lateral margins of pronotum in dorsal view. Pronotum punctate with large, dense, rounded punctures separated by 1–1.5 puncture diameters; punctures along midline of pronotum somewhat elongate oval.

Scutellum narrow subtriangular, about 1/12 length of elytra.

Elytra 1.15 times longer than wide, with humeral and apical umbones. Elytra widest in basal 1/3, slightly tapering apically in dorsal view. First elytral carina distinct, second feebly distinct. Elytra covered with rounded to elongate oval punctures separated by about 1 puncture diameter.

Macropterous.

Mesotibiae without tuft of setae ventroapically. Inner apical spur of mesotibia shorter than basal mesotarsomere and not curved downwards.

Aedeagus with relatively short (0.45 times length of phallobase), tapering parameres ( Figure 12 (d)). Parameres reasonably wider than apical part of phallobase in dorsal view ( Figure 13 (e)). Ventrobasal transverse plate of parameres distinct. Endophallus without strongly sclerotised sclerites. Cranial part of spiculum gastrale narrow, widened and rounded at very apex ( Figure 12 (c)).

Female unknown.

Distribution

Aegidium peres fi lhoi sp. nov. is known from one locality in southern Amazonia ( Figure 12 (f)).

Etymology

The species is named after Otávio Peres Filho (Federal University of Mato Grosso, Brazil), who collected the type series and kindly presented it to FZVM.

Figures

Figure 12. Aegidium peresfilhoi, holotype male. Habitus in dorsal view (a), labels (b), spiculum gastrale (c), aedeagus in lateral view (d), parameres in dorsal view (e), locality map (f).

Figure 13. Aegidium geayi, holotype male (a), male (c–d), female (b). Habitus in dorsal view (a, b), aedeagus in lateral view (c), parameres in dorsal view (d), spiculum gastrale (e), locality map (f).