Silvinha unica, Vaz-De-Mello, 2008

Vaz-De-Mello, Fernando Z., 2008, Synopsis of the new subtribe Scatimina (Coleoptera: Scarabaeidae: Scarabaeinae: Ateuchini), with descriptions of twelve new genera and review of Genieridium, new genus, Zootaxa 1955, pp. 1-75 : 44

15.1. Silvinha unica new species

Type series: Holotype ♂: BRAZIL: Rio de Janeiro: Nova Friburgo , VII-1994, P Grossi ( IBSP ex-FVMC).

Paratypes: BRAZIL: Minas Gerais: Viçosa , X-1998, FZ Vaz-de-Mello (2 FVMC) ; II-1995, FZ Vaz-de- Mello (1 FVMC) ; Rio de Janeiro: Nova Friburgo , VII-1994, P Grossi (1 FVMC) ; VI-1994, FZ Vaz-de-Mello (1 CMNC) ; 1000 m, XII-1996, P&E Grossi (2 FVMC) ; São Paulo : Serra do Japi , 1050 m, floresta, 1998, MIM Hernández, armadilha pitfall com fezes (5 FVMC) .

Description: Holotype ♂ 3.6 mm. Body color very dark brown. Head covered by simple punctures separated by one to three diameters, clypeus and gena with few intermixed larger setose punctures, clypeus anteriorly with also minute punctures intermixed ( Fig. 91). Pronotum covered by simple round punctures, on disc punctures separated by three to five diameters and minute in size, laterally punctures much larger and denser. Hypomeron covered posteriorly by large round punctures separated by four to six diameters. Elytral interstriae covered by minute unorganized punctures; discal striae with large round punctures, about as wide as twice the strial width, and separated by about four diameters on disc. Mesosternum covered by large transverse ocellated punctures separated by less than one diameter, slightly larger than similar punctures present on metasternal lateral lobes. Protibiae with anteriorly and ventrally directed triangular apicomesal tooth. Abdominal disc with ocellate punctures separated by one to three diameters. Pygidium with scattered setose and minute punctures intermixed. Parameres as in Fig. 92.

Variation: Paratypes vary only in color (brown to nearly black), size (3.4–3.8 mm) and sexual features (see above).

Etymology: unica : unique, only one, referring to only one species known in the genus.