Ischiocentra Thomson, 1861: 382, 1860

Nearns, Eugenio H. & Tavakilian, Gérard-Luc, 2012, New Taxa and Combinations in Onciderini Thomson, 1860 (Coleoptera: Cerambycidae: Lamiinae) from Central and South America, with notes on additional taxa Eugenio H. Nearns, Insecta Mundi 2012 (231), pp. 1-24 : 17-19

Ischiocentra Thomson, 1861: 382 ( Lamiinae : Onciderini )

Ischiocentra Thomson, 1861: 382 . Type species: Ischiocentra clavata Thomson, 1861 .

Discussion. Rodrigues and Mermudes (2011) described Peritrox insulatus from a single female specimen collected on “ Ilha Grande,” Rio de Janeiro, Brazil. Nearns et al. (2011) provided color photographs of three type specimens of the genus Peritrox . Based on examination of the holotype specimen of the type species of the genus ( Peritrox denticollis Bates, 1865 ; deposited at the MNHN); and photographs of the type specimens of Peritrox nigromaculata Aurivillius, 1920 ; Peritrox perbra Dillon and Dillon, 1945 ; and Peritrox vermiculatus Dillon and Dillon, 1945 ; the genus Peritrox possesses the following characters: eyes large, oblong; frons elongate, about as wide as 1 1/2 lower eye lobe widths; genae distinctly shorter than lower eye lobes, about 1/3 as tall; antennal tubercles armed with short, blunt horn; antennal tubercles narrowly separated, contiguous at base; scape gradually expanded to apex (e.g. Fig. 2 a-d).

The three views of the holotype specimen (dorsal habitus, lateral habitus, and close-up of head) provided by Rodrigues and Mermudes (2011) indicate the eyes of P. insulatus are moderately large; frons approximately subquadrate, about as wide as 2 1/2 lower eye lobe widths; genae a little shorter than lower eye lobes, about 3/4 as tall; antennal tubercles unarmed, moderately separated, not contiguous at base; scape clavate, not gradually expanded to apex.

Based on these morphological differences, the specimen described by Rodrigues and Mermudes (2011) conforms more closely to characteristics of the genus Ischiocentra Thomson , known from Brazil, Colombia, Costa Rica, Panama, and Venezuela. Therefore, we propose the new combination Ischiocentra insulata ( Rodrigues and Mermudes, 2011) .

Figures

Figure 2. Peritrox marcelae, sp. nov. a) Holotype male, dorsal habitus. b) Allotype female, dorsal habitus.