Trichocoelina jukkai Vilkamaa & Menzel 2019, sp. n.

Trichocoelina jukkai sp. n.

Figs 8 B, 9 D, 18 D

Material studied. Holotype male. FINLAND, Li (Lapponia inarensis), Utsjoki, Pummankijoki (grid 7759292:539670), sandy shore, pitfall trap, 13.VI–13.VII.2016, J. Salmela (in MZH). Paratypes. FINLAND, same data as holotype, 10 males (6 in MZH, 2 in SDEI, 2 in PJSR); NORWAY, Troms, Tromsø, Nakkedalen, 300 m S of Estengammen, 69.612°N, 19.592°E, 150 m, Malaise trap, 16–19.VII.2012, T.E. Barstad, 2 males (BOLD Sample IDs TSZD-JKJ-103937 and TSZD-JKJ-104088, in TMU).

Description. Male. Head. Face and antenna brown, antenna darker, maxillary palpus pale yellowish. Eye bridge 2 facets wide. Face with 14–20 setae. Clypeus with 1–2 setae. Maxillary palpus with 3 segments, 1 st segment longer than 3 rd segment, 2 nd segment shortest; 1 st segment with 1–2 setae, with a large dorsal patch of sensilla; surface of antennal flagellomeres smooth, body of 4 th antennal flagellomere 2.15–2.25x as long as wide, the neck shorter than broad, the longest setae longer than the width of flagellomere. Thorax. Dark brown, setae pale. Anterior pronotum with 3–8 setae. Proepisternum with 7–9 setae. Scutellum with 4 longer and some short and fine setae. Wing. Fumose. Length 1.6–1.7 mm. Width/length 0.35–0.40. Anal lobe weak. Veins distinct. c/w 0.55–0.70. R 1 /R 0.45–0.55. stM longer or shorter than fork of M. r-m longer than bM, both non-setose. Halter yellow. Legs. Yellow, coxal setae pale. Fore tibial organ forming a rather small patch in depression. Fore tibial spur longer than the tibial width. Abdomen. Pale brown, setae pale and long. Hypopygium (Fig. 8 B). Brown, as abdomen. Intergonocoxal area moderately long, with long, apically bifid setose lobe (Fig. 18 D). Gonocoxa moderately broad, longer than gonostylus, medial margin basally strongly curved, with sparse setosity. Gonostylus (Fig. 9 D) long, apically truncate, impressed; with normal setosity, a long apical tooth, 1 megaseta on the apical side of the tooth, a pair of megaseta subapically near the tooth and another pair more basally; megasetae long and slender; with 1 well-differentiated whiplash seta at ventromedial margin. Tegmen broader than long, laterally and apically roundish, weakly sclerotized, aedeagal teeth not detectable in the specimens studied. Aedeagal apodeme long.

BIN. BOLD:ADL0130.

Discussion. See under Trichocoelina dividua sp. n.

Etymology. The species is named after the dipterist Jukka Salmela, Rovaniemi, Finland, who collected the holotype.