Corynoptera tuomikoskii, 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 : 330-331

Corynoptera tuomikoskii sp. n.

Figs 8 A–C

Material studied. Holotype male. FINLAND, Ks, Kuusamo, Iivaara, 23.VI.1964, R. Tuomikoski (MZH).

Description. Male. Head. Colours faded in the specimen studied. Eye bridge 2 facets wide. Setae of face not visible in the specimen. Clypeus with 3 dark setae. Maxillary palpus with 3 segments; segment 3 longer than segment 1, with 7 short truncate setae; segment 2 shortest, with 1 long sharp seta and 5 shorter truncate setae; segment 1 with one long sharp seta, and a dorsal patch of sensilla. Antennal flagellomere 4 2.3x as long as wide, neck shorter than broad; longest setae as long as the width of flagellomere. Thorax. Setae dark. Setae of anterior pronotum and prothoracic episternum not visible in the specimen. Scutellum with 2 long setae. Wing. Length 1.7 mm. Anal lobe distinct. Width/length 0.40. R1/R 0.55. c/ w 0.70. r-m and bM non-setose. Haltere pale brown. Legs. Yellowish. Front tibial organ with dark vestiture, forming a straight row ( Fig. 8 A). Front tibial spur slightly longer than tibial width. Abdomen. Setae dark and strong. Hypopygium, Figs 8 B, C. Gonocoxa longer than gonostylus; ventral setosity sparse, setae at the apical part of mesial margin not elongated. Gonostylus elongated, narrowed towards apex and base, mesial side impressed at apical half; setosity sparse, apicomesially with a few elongated setae; bearing a long and curved apical tooth, with 5 subapical megasetae (subequal in size, slender, slightly curved, sharp, about as long as the apical tooth). Tegmen with roundish lateral sides, broadest at middle, without a dorsal finger-like process.

Discussion. See under Corynoptera captiosa sp. n.

Etymology. The species is named after the late Professor Risto Tuomikoski (1911–1989), the founder of modern sciaridology.

Figures

FIGURE 8. Corynoptera tuomikoskii sp. n. (holotype). A. Apical portion of front tibia, prolateral. B. Part of hypopygium, ventral. C. Gonostylus, ventral. Scale 0.10 mm.