Chionea (Chionea) pusilla Savchenko, 1983

Zhang, Xiao, Wang, Junchao & Yang, Ding, 2012, Chionea Dalman newly recorded from China with descriptions of two new species (Diptera, Limoniidae), Zootaxa 3316, pp. 1-14 : 5-7

Chionea (Chionea) pusilla Savchenko, 1983

( Figs. 12–22 )

Chionea pusilla Savchenko, 1983: 71 . Type locality: Kedrovaya Pad Nature Reserve, Khasansky Rayon, Primorskiy kray ( Russia).

Diagnosis. Generally brownish yellow species. Antenna with 8 segments. Gonostylus with a sclerotized lobe at base; inner tooth of sclerotized lobe shorter than outer tooth. Aedeagus small with two goblet-shaped lobes at base. Description. Male ( Fig. 12 ). Body length 2.5–3.0 mm, wing length 0.2 mm.

Head ( Fig. 13 ). Brown with brownish yellow hairs. Frons prominent. Antenna 0.6–0.7 mm long. Scape pale brown with extreme tip pale yellow; pedicel pale brown with tip darker; fusion segment (first flagellomere) brownish yellow, flagellomeres 2–6 brownish yellow. Scape subcylindrical; pedicel club-shaped; fusion segment subconical, flagellomeres 2–5 subcylindrical with three long hairs each, last flagellomere long with three long hairs and two long apical hairs. Proboscis and palpus brown to brownish yellow with brownish yellow hairs.

Thorax ( Fig. 12 ). Pronotum and mesonotum brownish yellow with white hairs. Coxae brown; trochanters, femora, tibiae and tarsi brownish yellow. Hairs on legs brownish yellow ( Fig. 14 ). Wing white. Halter 0.3–0.4 mm long, white.

Abdomen ( Fig. 12 ). Tergites and sternites brownish yellow. Hairs on abdomen brown.

Genitalia ( Figs. 15–19 ). Posterior margin of tergite 9 with a broadly V-shaped median emargination. Gonocoxite elongate, with long hairs on both dorsal and ventral sides. Gonostylus smoothly curved with a blunt basal tooth on inner margin, which bears several hairs; tip of gonostylus with tuft of microscopic hairs. Blackened sclerotized lobe present at base of gonostylus; sclerotized lobe bidentate, inner tooth of it shorter than outer tooth. Paramere triangular with tip rounded and outside curved downward. Claspette triangular with tip rounded. Aedeagus tapered apically with two goblet-shaped lobes at base.

Female ( Fig. 20 ). Body length 3.0–4.0 mm, wing length 0.2 mm. Similar to male, but femora thinner ( Fig. 21 ); cercus longer than hypogynial valve ( Fig. 22 ).

Material examined. 8 males 7 females, China: Heilongjiang, Wuying, Fenglin Nature Reserve, 48°8ʹN 129°12ʹE, 2011. XI. 12, Junchao Wang.

Distribution. China (Heilongjiang); Russia ( Oosterbroek 2012).

Remarks. This species is recorded from China for the first time. For descriptions and illustrations of this species, also see Savchenko (1983). The female of this species, however, was not described by Savchenko. We describe the female of this species for the first time. The male specimens we collected are consistent with the original descriptions ( Savchenko 1983, p71). Aedeagal complex of the species illustrated in the present paper ( Fig. 15 , 19 ) and that in the original illustrations ( Savchenko 1983, fig. 22) are completely consistent, especially the two goblet-shaped lobes ( Fig. 19 ) at base of aedeagus. The locality we collected the specimens (Heilongjiang, Wuying, Fenglin Nature Reserve) is not very far away from type locality (about 600 km).

Figures

FIGURES 12 – 15. Chionea (Chionea) pusilla Savchenko, 1983. 12: Habitus of male, dorsal view; 130: Head of male, lateral view; 14: Leg of male; 15: Aedeagal complex, dorsal view. Scale bar: 12 = 1.0 mm; 13 = 0.5 mm; 14 = 1.0 mm; 15 = 0.05 mm.

FIGURES 16 – 19. Chionea (Chionea) pusilla Savchenko, 1983. 16: Genitalia, dorsal view; 17: Genitalia, ventral view; 18: Genitalia, lateral view; 19: Aedeagal complex, dorsal view. Scale bar: 16 – 18 = 0.2 mm; 19 = 0.05 mm.

FIGURES 20 – 22. Chionea (Chionea) pusilla Savchenko, 1983. 20: Habitus of female, dorsal view; 21: Leg of female; 22: Ovipositor, lateral view. Scale bar: 20 – 21 = 1.0 mm; 22 = 0.2 mm.