Trichocoelina oricillifera, Vilkamaa & Menzel, 2019

Vilkamaa, Pekka & Menzel, Frank, 2019, Re-classification of Lycoriella Frey sensu lato (Diptera, Sciaridae), with description of Trichocoelina gen. n. and twenty new species, Zootaxa 4665 (1), pp. 1-67 : 40

Trichocoelina oricillifera sp. n.

Figs 12 B , 13 D , 17 B

Literature. Lycoriella hiemalis Mohrig & Mamaev—Heller et al. (2009) : 42 [misidentification].

Material studied. Holotype male. FINLAND, Lkor (Lapponia kemensis orientalis) Salla , Värriö, Kuntasjoki (grid 7520483:3610905), spruce mire, brook, Malaise trap, 29.VI–29.VII.2013, J. Salmela (in MZH) . Paratypes. FINLAND, same data as holotype, 1 male (in SDEI) ; Le (Lapponia enontekiensis), Kilpisjärvi , Saana , SW-slope, Malaise trap, 2006, J. Jakovlev & J. Penttinen, 1 male (in MZH) ; Lkor (Lapponia kemensis orientalis), Kittilä , Pallas-Yllästunturi National Park , SE of Lehtirova, 67º59’N, 24º05’E, mixed taiga (spruce, birch, pine), sweep-net, 18.VII.2005, M. Jaschhof, 1 male (in SDEI) ; NORWAY, Finnmark, Tana, Nedre Storfoss , 4.VII.1964, R. Tuomikoski, 1 male (in MZH) ; Finnmark, Karasjok , 12. VIII.1985, J. Tuiskunen, 1 male (in MZH) ; SWEDEN, Lapland, Norrbottens län, Arjeplog, lake Sädvajaure (northern end), 66.33°N, 16.20°E, 500 m, subalpine birch forest, Malaise trap, 7.VII–12.VIII.2005, M. Jaschhof & C. Jaschhof, 5 males (no. 5846, 5848 and 5860, in PKHH; no. 898 and 980 in SMNH) [locality published in Heller et al. (2009) as ‘Pite lappmark, Arjeplog 2’].

Description. Male. Head. Face brown, antenna slightly darker brown, maxillary palpus yellowish. Eye bridge 2 facets wide. Face with 17–28 fine setae. Clypeus with 2–3 setae. Maxillary palpus with 3 segments, 1 st segment either longer or shorter than 3 rd segment, 2 nd segment shortest; 1 st segment with 3–6 setae, with a dorsal patch of sensilla; surface of antennal flagellomeres smooth, body of 4 th antennal flagellomere 2.3–2.6x as long as wide, the neck shorter than broad, the longest setae shorter than the width of flagellomere. Thorax. Brown, setae pale. Anterior pronotum with 8–13 setae. Proepisternum with 10–13 setae. Scutellum with 3–4 longer and some short and fine setae. Wing. Fumose. Length 2.5–2.9 mm. Width/length 0.40. Anal lobe moderate. Veins distinct. c/w 0.60–0.85. R 1 /R 0.70–0.85. stM longer than fork of M. r-m and bM of variable lengths, bM non-setose, r-m with 2–4 setae. Halter yellow. Legs. Yellow, coxal setae pale. Fore tibial organ forming a large patch in depression. Fore tibial spur slightly longer than the tibial width. Abdomen. Pale brown, setae pale, fine and moderately long. Hypopygium ( Fig. 12 B ). Brown, as abdomen. Intergonocoxal area long, basally with strongly sclerotized medial stripe, with 2 distinct setose lobes ( Fig. 17 B ). Gonocoxa broad, as long as gonostylus, medial margin basally strongly curved, with short sparse setosity. Gonostylus ( Fig. 13 D ) long, apically truncate, strongly impressed; with short setosity, with a short dorsal apical tooth in subapical position, with 8–12 medial megasetae, megasetae long and slender, straight or slightly curved; with one long and 2–3 shorter whiplash setae basad of the megasetae. Tegmen longer than broad, conical, with sharp apicolateral corners, basolaterally broadened, apically and laterally sclerotized; aedeagal teeth not detectable in the specimens studied. Aedeagal apodeme long.

BIN. Unknown.

Discussion. See under Trichocoelina imitator sp. n.

Etymology. The name is derived from the Latin words oricilla, small ear, and - fer, bearing, referring to the lateral lobes of the tegmen.

Figures

FIGURE 12. Hypopygium, ventral. A. Trichocoelina planilobata sp. n. (holotype). B. T. oricillifera sp. n. (holotype). Scale 0.1 mm.

FIGURE 13. Gonostylus, ventral. A. Trichocoelina obesula sp. n. (holotype). B. T. nefrens sp. n. (holotype). C. T. planilobata sp. n. (holotype). D. T. oricillifera sp. n. (holotype). Scale 0.1 mm.

FIGURE 17. Tegmen, ventral. A. Trichocoelina imitator sp. n. (holotype). B. T. oricillifera sp. n. (paratype from Salla). C. T. hians sp. n. (holotype). D. T. janetscheki (Lengersdorf, 1953) (from Colorado). E. T. nefrens sp. n. (paratype from Rassokha). F. T. magnifica sp. n. (holotype). Scale 0.1 mm.