Glenea coomani Pic

Lin, Meiying & Yang, Xingke, 2011, Glenea coomani Pic, 1926 and its related species of South China with description of a new species, ZooKeys 153, pp. 57-71 : 58-61

Glenea coomani Pic Figs 111

Glenea coomani Pic, 1926: 21(Tonkin). [MNHN]

Glenea humerosa Gressitt, 1940: 206, pl. 6, fig. 4 (Hainan). [CAS, syn. by Breuning 1956]

Glenea (s. str.) coomani; Rondon and Breuning 1971: 537 (Laos).

Glenea coomani ; Breuning 1956: 744; Hua 2002: 210.

Redescription.

Male (Figs 2-6): length: 11.5-14.2 mm, humeral width: 3.5-4.5 mm. Female (Fig. 1): length: 14.0-16.2 mm, humeral width: 4.5-5.4 mm. Body black, in part provided with white to pale yellow pubescent maculae. Head with white to pale yellow maculae on genae, borders of eyes, temple and two parallel stripes between upper eye lobes; antennae black, with thin, whitish pubescence on inner sides of first three segments and base of fourth segment, and scattered with short, black bristles on undersides of first seven segments. Prothorax with a medial white to pale yellow stripe, and each side white to pale yellow (Fig. 1a). Scutellum white to pale yellow. Elytra with suture narrowly white to pale yellow near base; each disc with 5 white to pale yellow maculae: a large oval spot close to suture at the end of basal 1/4; a smallest spot near the middle, far from suture; the third one large, oval, close to suture just behind the middle; the fourth medium in size, round, far from suture; an oblique transverse band just before apex. Ventral surface covered with dense white to pale yellow pubescence, thinly so along middle. Legs black, thinly pubescent. Pronotum and elytral bases with sparse, erect, black bristles.

Head hardly broader than prothorax, deeply, and in part densely punctured, feebly concave at vertex. Eyes deeply emarginate, inferior eye lobes subequal to (female), or 2 times as high as (male) genae below it, width much less than half of front. Antennae longer than body; scape slightly thickened apical without cicatrix nor a ridge; antennomere ratio (male): 12: 3: 21: 16: 16: 15: 14: 13: 13: 12: 13; (female): 15: 4: 24: 17: 17: 16: 15: 14: 14: 13: 13. Prothorax almost as broad as long (male) or broader than long (female), swollen laterally before middle; disc convex and somewhat deeply and closely punctured. Elytra prominently angulate at humeri, slightly narrowed apically; each with 2 humeral longitudinal ridges beginning after humeri and reaching near the apex, truncated apically, with short and small teeth at the suture and the outer angle, surface with coarse and irregular punctures. Legs stout, middle tibiae grooved, hind femur reaching fourth abdominal segment, first hind tarsal segment longer than (male), or nearly as long as (female) following two segments combined. Male claws: the anterior claws of the fore and mid tarsi are toothed at the base, but the tooth in the fore tarsus is very small (Fig. 5), the tooth in the mid tarsus is long (Fig. 6, almost same size of the normal claw). Female claws simple.

Male genitalia (Figs 7-11): Tegmen length about 3.0 mm; lateral lobes stout, each about 0.6 mm long and 0.3 mm wide, with fine haired ridge at the base (in ventral view), apex nearly truncated and with fine setae which are shorter than lateral lobes; ringed part elbowed in the widest portion, converging; basal piece bifurcated distally (Fig. 9); median lobe plus median struts moderately curved, a little longer than tegmen (6:5); the median struts about one half of the whole length of median lobe; dorsal plate shorter than ventral plate; apex of ventral plate narrowly pointed, with sharp apex which is always curved to right side (in ventral view, Fig. 10); median foramen elongated triangular, with a small projection in lateral view; internal sac about 3 times as long as median lobe plus median struts, with 4 pieces of basal armature, 2 bands of supporting armature and 3 rods; the two longer rods each about 1.6 mm, shorter than tegmen, the short middle rod about 1.1 mm long. Ejaculatory duct single. Tergite VIII (Fig. 8c) broader than long, apex truncated with middle slightly projected, setae near lateral corner dense and long, and sparse and short around middle.

Diagnosis.

Differs from Glenea lacteomaculata Schwarzer, 1925 (Fig. 24), Glenea lacteomaculata quadriguttata Pic, 1926 (Figs 25-26) and Glenea tonkinea Aurivillius, 1925 (Figs 30-33) in elytron having only one big oval macula at basal fourth, instead of two small spots, the second macula smallest instead of the first one. Differs from Glenea laodice Thomson, 1879 (Fig. 27) and Glenea subalcyone Breuning, 1964 (Figs 28-29) in elytron without long and sharp tooth at the outer angle, having only one big oval macula at basal fourth, instead of two spots.

Remarks.

Based on the study on the types and material from type localities, we agreed with Breuning (1956) that Glenea humerosa Gressitt, 1940 is conspecific with Glenea coomani Pic, 1926. Though the holotype of Glenea humerosa Gressitt (Fig. 2) has the middle oval pubescent spot reaching suture and seems to be different from the type of Glenea coomani Pic (Fig. 1), the male (Fig. 4) also from Hainan Island looks no different from those from Tonkin. Nevertheless, such pubescent markings are quite variable in shape and size within same species.

Distribution.

China: Hainan, Yunnan (new province record); Vietnam, Laos.

Type specimen examined.

Holotype of Glenea coomani Pic, female, Tonkin (MNHN). Holotype of Glenea humerosa Gressitt, male, Ta-hian, foot of Five Finger Moutains, southcentral Hainan, 1935.VI.18, leg. Gressitt (CAS) [by original description and pictures].

Other specimens examined.

China: Yunnan: 1 male, Cheli to Damenglong, alt. 600 m, 1957.IV.22, leg. Dahua Liu (IZAS). Hainan: 1 male, Ledong, 1984.VIII.26, leg. Zhiqing Chen (IZAS). Vietnam: 1 male, Tonkin, Hoa-Binh (MNHN); 1 female, same data but (NMB, ex Coll. Frey); 1 male, Tonkin, Hoa-Binh, leg. A. de Cooman (IZAS); 1 female, same data but (NMB, ex Coll. Frey). Laos: 2 males, Ban Van Heue, 20 km E. of Phou-kow kuei, 1965.V.1-15, leg. J. A. Rondon (BM); 18 males 18 females, Phontiou, 1965.V.15 (MNHN, ex Coll. J. Rondon, 1967).