Heteroglenea gemella Lin et Yang

Lin, Meiying, Montreuil, Olivier, Tavakilian, Gérard & Yang, Xingke, 2009, Reinstatement of the genus Heteroglenea Gahan, with four new combinations, four new synonyms and three new species (Coleoptera: Cerambycidae: Lamiinae: Saperdini), Zootaxa 2137, pp. 1-22 : 17-18

Heteroglenea gemella Lin et Yang sp. nov. ( Figs 42–43 )

Description. Only female; male unknown. Length: 8.4–10.2 mm, humeral width: 2.2–2.8 mm. Head with dense ochreous pubescence, with upper side of frons and three vittae on occiput blackish brown (very dark); antennae reddish brown, with scape darker. Prothorax with similar pubescence except: two narrow blackish brown stripes on the disc, reaching neither basal nor apical margin, and one semi-rounded blackish brown circle on each side, which is sometimes open towards the coxa; in the centre of the circle is a rounded ochreous spot. Scutellum pubescent. Elytra dark brown, each with 5 ochreous pubescent maculae on disc: a sutural one from base to apex, one short longitudinal line on centre of basal 2/5, sometimes extended and connected with median spot, a median spot not confluent with sutural stripe, a stripe near margin from basal 1/ 8 to apical 1/6, expanded apically, and a transverse apical vitta confluent with sutural stripe but not forming a right angle. Ventral surface densely clothed with light ochreous pubescence, with some black brown spots of more or less lacking pubescence. Legs pale testaceous, with tarsi somewhat darker. Head hardly broader than prothorax. Eyes deeply concave, inferior eye lobes twice as high as gena below, width much shorter than ½ of frons. Antennae longer than body; antennomere ratio: 11 2 17 16 13 12 11 11 10 9 10. Prothorax almost as broad as long. Elytra parallel-sided, the sides serially punctuated, each with a humeral obtuse longitudinal ridge nearly reaching the apex, truncated apically, not spined. First hind tarsal segment shorter than following two segments combined. Female terminalia ( Fig. 43 ): Spermathecal capsule consisting of an apical orb and a stalk; stalk curved in basal third, twice as long as apical orb. Tignum longer than abdomen.

Diagnosis. This species is very similar to H. momeitensis , but can be distinguished by: each side of prothorax with a semi-rounded blackish brown circle, which is a fusion of the two blackish brown stripes of H. momeitensis (or H. mediodiscoprolongata ) and has in its centre a small, round ochreous spot which is sometimes open towards the coxa; the median spot on elytron is not confluent with sutural stripe; the sutural stripe gradually enlarged towards apex, not forming a right angle between sutural stripe and apical transverse vitta; elytra darker than those of H. momeitensis ; the blackish brown spot on the upper part of frons is bigger ( Fig. 42 H).

Remarks. This species was reported from Nepal as Glenea momeitensis by A. Weigel in 2006. (personal communication with Dr. C. Holzschuh)

Etymology. Because this species has similar maculae and colour with H. momeitensis . ‘Gemellus’ means twins in latin.

Distribution. Nepal.

Specimens examined. Holotype (10.2 mm long), Ψ, Nepal, Arun Valley, Lamobagar Gola, 87°19΄E, 27°40΄N, alt. 1000–1400 m, 1980. V.27–VI.3, leg. C. Holzschuh (CCH); paratypes: 3 Ψ, same data; 4 Ψ, same data but 1983. VI.8–14 (CCH).

Figures

FIGURES 42 – 43. Habitus, H. gemella Lin et Yang sp. nov. 42. paratype, female, from Nepal. b. lateral view. c. dorsal view. H. head, frontal view. 43. Female terminalia. S. spermathecal capsule.