Gynapteromyia brevipalpis (Mamaev, 1964) comb. nov.

Fig. 4A–D

Chastomera brevipalpis — Mamaev 1964: 903, fig. 3v; Spungis 1985: 41, fig. 1 Haplusia brevipalpis — Gagné 1978: 518.

Previous descriptions of G. brevipalpis in the literature were based on a very few specimens: a single female from Russia (Mamaev 1964) and several larvae plus an adult of either sex from Latvia (Spungis 1985). Spungis’s (1985) description is here complemented on the basis of eight males recently found in Öland, Sweden—the first specimens of G. brevipalpis known from that country.

Diagnosis. In G. brevipalpis, as in most other Gynapteromyia, translucent sensilla on the flagellomeres (Fig. D) and palpi are simply hair-shaped and vein CuA extends to the wing margin. Characters of the male genitalia (Fig. A) are diagnostic of this species, as follows. The ventral emargination of the gonocoxites is evenly U-shaped; the long protrusions microtrichia of the and medial fine setae gonocoxal (↓); the bridges stout gonostylus are angulated is only rather slightly than rounded tapered and towards sparsely the covered apex (↓) with; and both the

tegmen apex is subrectangular, with the corners barely prominent (↓).

Other male characters in addition to Spungis (1985). Head. Eye bridge 1–2 ommatidia long dorsally. Genal setae 1–3, often thick, straight. Palpus with either 3 or 4 segments (Fig. B–C), sensory hairs on first and second, occasionally third segments. Wing. Vein btv with 0–2 setae. Basal and central portions of membrane without setae.

Material examined. Sweden: 7 males (CEC00139−00145), Öland, Mörbylånga, Ullevi, herb-rich meadow near forest, 24 May–15 July 2015, Malaise trap, M. & C. Jaschhof; male (CEC00146), Öland, Borgholm, Lindreservatet Nature Reserve, mixed deciduous forest, 11 June–21 July 2015, Malaise trap, M. & C. Jaschhof (4 in NHRS, 4 in SDEI).