Aegidinus simulatus Colby, 2009

Frolov, Andrey V., Akhmetova, Lilia A. & Vaz-de-Mello, Fernando Z., 2019, Contribution to the knowledge of Aegidinus Arrow (Coleoptera: Scarabaeidae: Orphninae): new species and comments on the classification and nomenclature, Journal of Natural History 53 (11), pp. 725-747 : 743

Aegidinus simulatus Colby, 2009

( Figure 4 (e–h))

Aegidinus simulatus Colby, 2009: 32

Material examined

PERU. Loreto: Curaray River, Gaseoducto Barrett, 25 February 2008, W. Yawarcani leg., two males and three females ( UNMSM). COLOMBIA. Meta: San Martín, Tocancipa Ranch, 520 m, forest, pitfall, April 2006, J. Noriega leg., one male ( CEMT).

Diagnosis

Aegidinus simulatus is similar to Ae. brasiliensis , Ae. howeae and Ae. colbyae sp. nov. in having mediobasal margins of the dorsomedial lobes of the parameres strongly sclerotised, but can be distinguished from them by having the dorsal sides of the parameres strongly overlapping and separated by a slit ( Figure 4 (f), arrowed).

Description of male

Body length 9.5 – 10.0 mm. Colour uniformly blackish brown. Anterior margin of frontoclypeus with a horn rounded apically ( Figure 4 (e)).

Pronotum with widely rounded lateral margins, narrower than elytra, 1.6 times wider than length. Posterior angles widely rounded. Anterior margin bordered, border narrowly interrupted medially, with short, somewhat bimodal tubercle. Base of pronotum not bordered, with obsolete punctures laterally. Pronotal disc feebly excavated anteromedially, with two gibbosities in centre. Pronotum punctate with a few large rounded punctures laterally and transversely elongated punctures anteromedially and with minute, feebly visible punctures throughout.

Elytra almost as long as wide, widest medially and rounded apically, with humeral and apical humps. First elytral stria as continuous line not connected basally with undulate line from scutellum to humeral hump. Other striae marked with rows of sparse elongate punctures.

Protibia without medioapical tooth.

Aedeagus relatively long and slender, ratio of phallobase length/paramere width 2.6 ( Figure 4 (f)). Ventroapical plate of phallobase absent ( Figure 4 (h)). Parameres symmetrical, mediobasal margins of dorsomedial lobes strongly sclerotised (4G), dorsal sides of the parameres strongly overlapping and separated by a slit ( Figure 4 (f), arrowed).

Distribution

The species was described from Aliñahui (Ecuador, Napo Province) and Gigante (Huila, Colombia). The new records are from Curaray River (Peru, Loreto) and San Martín (Colombia, Meta) ( Figure 7 ).

Figures

Figure 4. Aegidinus spp. Ae. noriegai sp. nov., holotype (a–d), Ae. simulatus, male (e–h). Habitus in dorsal view (a, e); aedeagus in lateral (b, f) and ventral view (d, h); parameres in dorsal view (c, g).

Figure 7. Aegidinus spp. Locality records map.