Eumenes coarctatus lunulatus FABRICIUS 1804

G. F & Borsato, W., 2008, Description of two gynandromorphic Eumenidae (Hymenoptera Vespoidea), Linzer biologische Beiträge 40 (1), pp. 951-957 : 952

Eumenes coarctatus lunulatus FABRICIUS 1804 ( Fig. 2 )

M a t e r i a l e x a m i n e d: 1 specimen from Italy: Sardinia, Stagno di Molentargius (Cagliari), 15.VIII.1991, C. Meloni leg.

D e s c r i p t i o n. Length: 12.8 mm; fore wing length: 8.8 mm. General appearance female-like, metasoma bearing a normally developed sting, without traces of male genital capsule structures, with male traits located exclusively on head (fig. 2). Clypeus weakly asymmetric in shape due to the presence of mixed male and female characters, strongly convexes, moderately emarginated medially; right half male-like, longer than left femalelike half, entirely lemon-yellow, with apical margin testaceous; left half female-like, mostly lemon-yellow except the outer margin black, and apical margin testaceous. Right eye male-like, wider than left one, with medial margin very close to homolateral antennal socket. Left eye female-like, with medial margin less close to homolateral antennal socket than right half male-like. Right antenna male-like, blackish except ventral surface of scape yellow, antennomeres 11-12 blackish brown, last antennomere yellow-orange, 13-segmented, curved apically (last antennomere). Left antenna female-like, blackish except ventral surface of scape yellow (less extensively than right scape), 12-segmented, not curved apically. Right mandible male-like, slightly longer than clypeus length, inner margin (the "cutting edge") with weak teeth. Left mandible female-like, quite longer than clypeus length, inner margin with well developed teeth.

Figures

Fig. 2: Eumenes coarctatus lunulatus FABRICIUS 1804, gynandromorph specimen, head in frontal view. (2a) detail of clypeus; (2b) detail of tip of male-like antenna; (2c) detail of tip of female-like antenna.