Rhamphomyia Meigen

Rhamphomyia sp. 1

(Fig. 68)

Material examined. RUSSIA. Chukotka AO (Wrangel Island): env. of Somnitelnaya Bay, south of Wrangel Island, 10.vii.1966, KBG; upper flow of river Somnitelnaya, Mineev Mtns; on flower of Potentilla (1 ♀, ZIN).

Description. Female (Fig. 68). Length body 3.6 mm, wing 3.7 mm. Head with greyish brown pruinescence on face, frons, postgena, ocellar triangle and occiput; dark setose. Eyes dichoptic, separated by broad frons. Antenna blackish brown; scape and pedicel short, scape slightly longer, both with short setulae; postpedicel conical, 3X longer than wide; stylus very short, nearly as long as postpedicel basal width. Palpus dark; with several moderately long, dark fine setae. Labrum short, nearly of head height. Thorax brownish grey pruinescent; with black setation; scutum almost uniformly faintly brownish grey pruinescent, without vittae in dorsal view, with some traces of darker narrow vittae between acr and dc rows viewed anterodorsally. Proepisternum with few moderately long fine setae on lower section; upper proepisternum in front of spiracle without setae. Prosternum bare. Antepronotum with several short setae. Postpronotal lobe with 2 long and several shorter fine setae. Mesonotal setae fine, hardly differentiated; 2 longer presut spal with numerous additional short setae, 3–4 npl (with additional short setae), 1 psut spal (with several additional short setae anteriorly), 1–2 pal, 6 sctl; acr arranged in 2 irregular rows, lacking on prescutellar depression, shorter than presutural dc; presutural dc 3–4-serial, long, barely separated from numerous supra-alars, postsutural dc 1–2-serial, longer, 3–4 prescutellars longest. Laterotergite with numerous long fine setae. Anterior and posterior spiracles brown. Legs long, slender, uniformly brownish, faintly greyish pruinescent, dark setose; fore coxa with fine setae anteriorly; femora and tibiae covered with short setae, no strong and pennate setae; hind femur with very short anteroventral setae; tibiae with some longer setae dorsally, hind tibia with 1 seta in posteroapical comb. Wing membrane uniformly brownish infuscate; CuA+CuP (anal vein) incomplete; 1 short basal costal seta; axillary incision right-angled. Squama brownish, dark fringed. Halter with brownish knob and reddish brown stem. Abdomen brownish, faintly greyish pruinescent, with short fine dark setae; cercus long, slender, with dark setulae.

Remarks. This species may belong to the R. pusilla species group of Pararhamphomyia, but this requires verification. According to Frey, this species would run to his group III.

Family HYBOTIDAE