Clavidesmus egeri, Nearns, Eugenio H. & Santos-Silva, Antonio, 2016

Nearns, Eugenio H. & Santos-Silva, Antonio, 2016, Two new species of Onciderini Thomson, 1860 (Coleoptera, Cerambycidae, Lamiinae) from South America, Zootaxa 4137 (3), pp. 445-450 : 448-450

Clavidesmus egeri sp. nov.

( Figs. 9–12 )

Description: Female ( Figs. 9–12 ). Length 14.4 mm (measured from vertex to elytral apices), width 5.2 mm (measured across humeri). Habitus as in Fig. 9 . General form elongate-oblong, moderate-sized. Integument almost black, with white, ochraceous, testaceous, and black pubescence.

Head. Frons slightly transverse, about width of 5 lower eye lobes ( Fig. 11 ); lateral margins behind eyes with dense white pubescence. Area between antennal tubercles and upper eye lobes with sparse ochraceous pubescence interspersed with white pubescence. Eyes with lower lobes moderate-sized, oblong; upper and lower eye lobes completely separated, not connected by contiguous ommatidia ( Fig. 12 ). Genae elongate, about 1.3× as tall as lower eye lobes; with short, sparse, white and ochraceous setae. Antennal tubercles slightly raised, widely separated. Antennae distinctly shorter than body, reaching just beyond middle of elytra; scape moderately curved, base of antennomeres IV–XI with ochraceous pubescence, dark brown at apices; antennomere III distinctly swollen, thicker apically than all other antennomeres. Antennal formula based on antennomere III: scape = 0.61; II = 0.13; IV = 0.51; V = 0.41; VI = 0.32; VII = 0.30; VIII = 0.27; IX = 0.42; X = 0.24; XI = 0.19.

Thorax. Prothorax nearly cylindrical, transverse, 1.5× as wide as long (including lateral tubercles); sides with small, blunt tubercle at basal third. Pronotum with ochraceous and white pubescence ( Fig. 9 ); disk with surface moderately pubescent, lateral margins with dense, white pubescence; disk with shallow basal transverse sulcus.

Scutellum transverse; apex rounded. Elytra about 1.85× as long as width at humeri, 3.6× as long as pronotal length, 1.40× broader basally than prothorax at widest (at tubercles); lateral margins sinuate, broadly rounded to apices at apical quarter; apices individually rounded; humeri moderately prominent, anterior margin rounded. Elytra with distinct subcircular macula formed by dense white pubescence, outlined by narrow fringe of ochraceous pubescence; area formed inside subcircular macula darker and contrasting, with sparse black and ochraceous pubescence; subcircular macula extending from scutellum to lateral margins, and reaching apical third. Ventral side of thorax with moderate to dense, white pubescence laterally, interspersed with ochraceous setae. Procoxae large, globose, not uncate. Mesosternal process about 0.6× as wide as mesocoxal cavity; truncate at apex.

Abdomen. Ventrites with moderate, white and testaceous pubescence; ventrite V about as long as III–IV combined, with a median triangular impression. Legs short. Femora robust; metafemora with dense white pubescence. Tarsomeres distinctly dark, with black and brown pubescence. Metatarsomere V as long as I–III combined.

Male. Unknown.

Type material. Holotype female ( USNM), Peru: San Martín Dept., Tarapoto, vic. Cordillera Escalera Lodge, 432 m. 11-13-X-2012 J.E. Eger // S 06˚28’08.1” W 076˚21’16.4”, MV & UV light.

Etymology. This species is named for Joseph E. Eger, who collected the holotype specimen.

Remarks. Clavidesmus egeri is easily distinguished from its congeners by the distinct subcircular marking of dense, white pubescence on elytra. This species is described from a single female specimen collected at lights.

Figures

FIGURES 9 – 12. Clavidesmus egeri sp. nov., holotype female: 9, dorsal habitus; 10, lateral habitus; 11, head, frontal view; 12, head, close-up of head showing upper eye lobe.