Peritrox Bates, 1865: 313

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 : 5-6

Peritrox Bates, 1865: 313 ( Lamiinae : Onciderini )

Type species. Peritrox denticollis Bates, 1865 (monotypy).

The genus Peritrox currently contains four described species. Nearns et al. (2011) provided color photographs of three species of this genus, including two type specimens. The following key was adapted from Dillon and Dillon (1945) and treats all currently known species of Peritrox including one new species described herein (the species Peritrox insulatus Rodrigues and Mermudes, 2011 , is transferred to the genus Ischiocentra Thomson herein).

1. Eye with lower lobe less than twice the height of gena; elytra with irregular, vermicular, fulvous maculae outlined with thin whitish pubescence, interspaces glabrous ( Brazil)............................ .................................................................................... P. vermiculatus Dillon and Dillon, 1945

– Eye with lower lobe at least twice the height of gena; elytra without vermicular fulvous maculae .......................................................................................................................................................... 2

2(1). Elytra with fulvous or red-range pubescent maculae....................................................................... 3

– Elytra with only dull reddish pubescent maculae ( Argentina, Bolivia, Brazil, Paraguay, Uruguay).............................................................................................. P. denticollis Bates, 1865

3(2). Antennomeres more or less uniformly dark brown; elytra fulvous, with irregularly shaped dark brown or black maculae outlined with thin grayish pubescence.................................................. 4

– Antennomeres I, II, basal 5/6 of III, and basal 2/3 of IV with grayish pubescence, distinctly lighter than V-XI, which are uniformly dark brown; elytra with red-orange pubescence, with small and moderately-sized, dark brown maculae outlined with ring of white pubescence ( French Guiana) ........................................................................................................ P. marcelae , sp. nov.

4(3). Front entirely ochraceous pubescent, more densely pubescent laterally; elytra with fulvous pubescence predominating, a broad, unbroken, hoary fascia placed partly anterior to middle of its length ( Brazil, Ecuador, French Guiana, Peru) .... P. perbra Dillon and Dillon, 1945

– Front variegated with white and fulvous pubescence, fulvous vittate laterally; elytra with gray pubescence predominating, hoary fascia broken, placed behind middle of length ( Bolivia, Brazil, Paraguay) .......................................................... P. nigromaculata Aurivillius, 1920