Paraegidium oliveirai Frolov, Akhmetova

Frolov, Andrey V., Akhmetova, Lilia A. & Vaz-de-Mello, Fernando Z., 2017, Revision of the South American genus Paraegidium Vulcano et al. (Coleoptera: Scarabaeidae: Orphninae), Journal of Natural History (J. Nat. Hist.) 51 (17 - 18), pp. 995-1014 : 1012-1013

Paraegidium oliveirai Frolov, Akhmetova & Vaz-de-Mello, sp. nov.

( Figures 6 (a–f), 7)

Type locality

Brazil, Goiás, Morrinhos, Jatobá Centenário ecological park.

Type material examined

Holotype, male at CEMT labelled ‘ BRASIL: Goiás Morrinhos Pq. Eco. Jatoba 17°43′26.02″S 49°07′29.83″W 803 m Col. Manual X/ XI 2010 ’. Paratypes: BRAZIL . Goiás: two males at CEMT and ZIN labelled ‘ BRASIL: Goiás Morrinhos Pq . Eco . Jatoba 17°43′26.02″S 49°07′ 29.83″W 803 m Col . Manual X/ XI 2010 ’. Minas Gerais: one male at CEMT labelled ‘ BRASIL: Minas Gerais, Santana do Riacho , PARNA, Serra do Cipó, 18 .xi .2015, J Bonanomi’. Rio de Janeiro: one male at CMNC labelled ‘ BRASIL Eº Guanabara Rio de Janeiro CORCOVADO Alvarenga-leg . Coll . Martínez . Nov :956/H . & A. HOWDEN COLLECTION ex. A. Martinez coll./PARATIPO/ Paraegidium castalimai ♂ gen. et sp. nov. Vulcano , Pereira y A . Martinezdet . 1965’.

Diagnosis

P. oliveirai sp. nov. can be easily separated from the other species of the genus by having short parameres with somewhat rounded (in lateral view, Figure 6 (d)) apices and widely bifurcated lobes of the anterior frontoclypeal process ( Figure 6 (a)).

Description

Holotype, male ( Figure 6 (a, d–f)).

Body length 7.3 mm. Colour uniformly dark brown.

Anterior frontoclypeal process long and wide, as wide as head, widely sinuate medially, with asymmetric lateral lobes; the lobes distinctly excavated apically, in lateral view they have lateral angles directed caudally.

Pronotum slightly narrower than elytra, deeply excavated in middle. Lateral pronotal processes almost rounded, their hind margins not carinate. Pronotum coarsely punctate to rugose except for apices of lateral pronotal processes and a narrow area near anterior margin.

Aedeagus with short parameres: ratio phallobase width/paramere width 2.7 ( Figure 6 (d)). Apices of parameres rounded in lateral view and dorsal view ( Figure 6 (d, e)). Endophallus without a group of spinules ( Figure 6 (f)).

Female unknown.

Variation

Body length of the paratypes varies from 6.8 to 7.5 mm. The paratypes have less developed anterior frontoclypeal processes ( Figure 6 (b, c)) than the holotype.

Distribution

The species is known from two localities in the Brazilian states of Goiás and Minas Gerais ( Figure 7 ). The record from Corcovado Mountain in Rio de Janeiro is doubtful and not therefore mapped.

Etymology

The new species is named after Dr Charles Martins de Oliveira, from Embrapa Cerrados in Brasília, who obtained the specimens from Morrinhos.

Figures

Figure 6. Paraegidium oliveirai, holotype male (a, d–f); paratype males (b, c). Habitus in dorsal view (a); pronotum and head (b, c); aedeagus in lateral view (d); parameres in dorsal view (e); endophallus (f).

Figure 7. Paraegidium spp. locality map.