Aegidinus noriegai Frolov, Akhmetova and Vaz-de-Mello, 2019

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 : 738-739

Aegidinus noriegai Frolov, Akhmetova and Vaz-de-Mello sp. nov.

( Figure 4 (a – d))

Type locality. Colombia, Antioquia, Medellín.

Type material examined

Holotype. Male ( Figure 4 (a)) at CEMT labelled ‘ COLOMBIA: Antioquia. Porce. Picardia V- 1998. pastizal, pitfall. J. Noriega ’.

Diagnosis

Aegidinus noriegai sp. nov. is most similar to Ae. candezei but can be distinguished from it by the longer and more asymmetrical parameres, ventroapical plate of the phallobase longer than wide ( Figure 4 (b – d)), and the protibia without medioapical tooth.

Description

Male ( Figure 4 (a)). Body length 8.5 mm. Colour uniformly blackish brown. Anterior margin of frontoclypeus with a horn rounded apically.

Pronotum with widely rounded lateral margins, narrower than elytra, 1.6 times wider than length. Posterior angles widely rounded. Anterior margin bordered, border interrupted medially, with feeble gibbosity. Base of pronotum not bordered, with a few large rounded punctures laterally and a few small medially. Pronotal disc feebly excavated anteromedially, with two gibbosities in centre. Pronotum punctate with a few large rounded punctures laterally and 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, connected basally with undulate line from scutellum to humeral hump. Other striae marked with rows of sparse punctures; punctures somewhat V- and comma-shaped on basal part of elytra, becoming smaller towards apices.

Protibia without medioapical tooth.

Aedeagus relatively short and wide, ratio of phallobase length/paramere width 1.8 ( Figure 4 (b)). Ventroapical plate of phallobase narrow and long, 1/3 as wide as phallobase and longer than wide ( Figure 4 (d)). Parameres strongly asymmetrical ( Figure 4 (c,d)): right paramere with relatively long medial and lateral processes, medial process relatively straight; left paramere with vestigial lateral process; medial process curved outwards, with small tooth near apex.

Distribution

The species is known from a single locality in Antioquia, Colombian Andes ( Figure 7 ).

Etymology

The new species is named after Jorge Noriega (University of Los Andes, Bogotá, Colombia).

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.