Corynoptera spiciforceps, Vilkamaa, Pekka, Hippa, Heikki & Heller, Kai, 2013

Vilkamaa, Pekka, Hippa, Heikki & Heller, Kai, 2013, Notes on the taxonomy of the Holarctic Corynoptera Winnertz sensu lato (Diptera, Sciaridae), with description of six new species, Zootaxa 3710 (4), pp. 322-332 : 328-329

Corynoptera spiciforceps sp. n.

Figs 6 A–C

Material studied. Holotype male. FINLAND, Obb, Tervola, Ruuttulampi (UTM grid 7347752:3409692), 70 m, by a spring, Malaise trap, 1.VII–2.VIII. 2004, J. Salmela (MZH). Paratypes. Same data as holotype but 2– 28.VIII.2004 (1♂ MZH); Obb, Tervola, Keskipalo W (UTM grid 7344811:3415109), 50 m, by a spring, Malaise trap, 1.VII–2.VIII.2004, J. Salmela (1♂ MZH); Obb, Tervola, Karhakkamaanjänkä SE (UTM grid 7346274:3415780), 55 m, Malaise trap, 9.VII–2.VIII.2004 (5♂ MZH, 1♂ SDEI).

Description. Male. Head. Brown. Maxillary palpus very pale brown. Antenna concolorous, pale brown. Eye bridge 2 facets wide. Face with 5–12 scattered longer and shorter dark setae. Clypeus with 1–2 dark setae. Maxillary palpus with 3 (rarely 2) segments; segments of variable lengths in relation to each other; segment 1 with one long sharp seta, with a dorsal pit of sensilla; segment 2 with 1 long sharp seta and 5–6 shorter truncate setae, segment 3 with 6–7 short truncate setae. Antennal flagellomere 4 2.15– 3 x as long as wide, neck shorter than broad; longest setae slightly longer than the width of flagellomere. Thorax. Unicolorous brown. Setae dark. Anterior pronotum with 2–4 setae. Prothoracic episternum with 4–6 setae. Scutellum with 4 long setae. Wing. Length 1.6– 1.8 mm. Anal lobe very small. Width/length 0.35–0.40. R1/R 0.70–0.95. c/ w 0.65 –0.90. r-m shorter than bM, both veins non-setose. Haltere pale brown. Legs. Yellowish. Front tibial organ with pale vestiture, forming a patch ( Fig. 6 A). Front tibial spur slightly longer than the tibial width. Abdomen. Pale brown, paler than thorax. Setae dark and strong. Hypopygium, Figs 6 B, C. Brown, as abdomen. Gonocoxa longer than gonostylus; ventral setosity of gonocoxa sparse, setae at the apical part of the mesial margin not elongated. Gonostylus elongated, narrowed towards apex, mesial side slightly impressed; setosity sparse, apicomesially with a few elongated setae; bearing a long apical tooth, with 7–8 subapical megasetae (subequal in size, slender, straight or slightly curved, sharp). Tegmen unmodified, with roundish apex and lateral sides, and without a dorsal finger-like process.

Discussion. See under Corynoptera salmelai sp. n.

Etymology. The name is derived from the Latin words spica (point) and forceps (tweezers), referring to the sharp megasetae on the gonostylus of the species.

Corynoptera subvariegata Rudzinski, 1992 Figs 7 A, B

Material studied. FINLAND, Kb, Outokumpu, Lake Sysmäjärvi, birch/alder forest, aspirator, 18.VI.2004, M. Jaschhof (1♂, no. 6522 PKHH); Kb, Eno (UTM grid 696:366), 9.VIII.1986, J. Tuiskunen (1♂ MZH); Ok, Suomussalmi, Toskanoja (UTM grid 7237249:3555026), by a brook, Malaise trap, 1.VI–3.VII.2006, J. Salmela (1♂ MZH); Ks, Taivalkoski, Syväoja (UTM grid 7299627:3560581), by a brook, 1.VI–3.VII.2006, J. Salmela (1♂ MZH); Ks, Kuusamo, Paahtojärvi (UTM grid 7347004:3614371), by a brook, Malaise trap, 1–20.VI.2005, J. Salmela (1♂ MZH); Ks, Kuusamo, Putaanoja (UTM grid 7367392: 3608548), by a brook, Malaise trap, 1– 20.VI.2005, J. Salmela (1♂ MZH); Le, Enontekiö, Saana, SW-slope, (UTM grid 7673829:3254426), calcareous grove, Malaise trap, 15.VI–15.VII. 2006, Penttinen & Jakovlev (2♂ MZH); same data as previous, but UTM grid 7675056:3253286 (1♂ MZH); NORWAY, Sappen, 9.VII.1964, R. Tuomikoski (2♂ MZH); SWEDEN, Abisko, 7.VII.1976, Müller (holotype of Corynoptera subvariegata Rudzinski , slide no. 1795 ZSMC).

Redescription. Male. Head. Brown. Maxillary palpus very pale brown. Antenna concolorous with face. Eye bridge 2–3 facets wide. Face with 8–16 scattered longer and shorter dark setae. Clypeus non-setose or with 1–2 dark setae. Maxillary palpus with 3 segments; segment 1 longest, segment 2 or segment 3 shortest; segment 1 with one long sharp seta, with a dorsal patch of sensilla; segment 2 with 1 long sharp seta and 3–5 shorter truncate setae, segment 3 with 4–5 short truncate setae. Antennal flagellomere 4 1.9–2.4x as long as wide, neck longer than broad; longest setae longer than the width of flagellomere. Thorax. Unicolorous brown. Setae dark. Anterior pronotum with 2–3 setae. Prothoracic episternum with 4–8 setae. Scutellum with 2 long setae. Wing. Length 1.4–1.6 mm. Width/length 0.40–0.45. R1/R 0.55–0.70. c/ w 0.70 –0.75. r-m and bM non-setose. Haltere pale brown. Legs. Pale yellowish brown. Front tibial organ with pale vestiture, forming a demarcated patch. Front tibial spur slightly longer than the tibial width. Abdomen. Brown, paler than thorax. Setae dark. Hypopygium, Figs 7 A, B. Brown, as abdomen. intercoxal area with a group of short fine setae. Gonocoxa longer than gonostylus; ventral setosity dense, setae at the mesial part of the mesial margin elongated. Gonostylus elongated, mesial side slightly impressed at the apical half; setosity sparse, apicomesially with a few elongated setae, at the middle an elongated seta; bearing a strong apical tooth, with 4–6 megasetae (subequal in size, slender, slightly curved, longer than the apical tooth). Tegmen unmodified, without a dorsal finger-like process.

Discussion. See under Corynoptera captiosa sp. n.

Figures

FIGURE 6. Corynoptera spiciforceps sp. n. (holotype). A. Apical portion of front tibia, prolateral. B. Gonostylus, ventral. C. Part of hypopygium, ventral. Scale 0.10 mm.

FIGURE 7. Part of hypopygium (A, C) and gonostylus (B, D), ventral. A, B. Corynoptera subvariegata Rudzinski (from Finland). C, D. C. variegata Mohrig (holotype). Scale 0.10 mm.