Ctenosciara crinita, Vilkamaa, Pekka, Hippa, Heikki & Mohrig, Werner, 2012

Vilkamaa, Pekka, Hippa, Heikki & Mohrig, Werner, 2012, The genus Ctenosciara Tuomikoski (Diptera, Sciaridae) in New Caledonia, with the description of eight new species, Zootaxa 3255, pp. 37-51 : 41

Ctenosciara crinita sp. n.

Figs 3 A–D

Material studied. Holotype male. NEW CALEDONIA (no locality given), Malaise trap, 12–25.V.1989, Bonnet de Larbogne & Chazeau (in MNHN).

Description. Male. Head. Colour faint in specimen. Eye bridge 3 facets wide. Face with 11 scattered longer and shorter setae. Clypeus not clearly discernible in the specimen. Maxillary palpus with 3 palpomeres; palpomere 3 longer than palpomere 1, palpomere 2 shortest; palpomere 1 with 3 setae, with a dorsal patch of sensilla; surface of antennal flagellomeres rough, flagellomere 4 ( Fig. 3 A) 3.15x as long as wide, the neck slightly longer than broad, the longest setae longer than the width of flagellomere. Thorax. Fainted in the specimen, setae pale. Anterior pronotum with 3 setae. Episternum 1 with 6 setae. Scutum with long dorsocentrals, with some longer and shorter laterals, scutellum with 4 longer and some short setae. Wing. Hyalinous. Length 1.5 mm. Width/length 0.45. Veins distinct. R1/R 1.0. c/ w 0.75. r-m and bM subequal in length. M and CuA setose, r-m and bM nonsetose. Legs. Coxal setae pale. Apical part of front tibia, Fig. 3 B: tibial organ with pale vestiture forming a long curved row. Front tibial spur slightly longer than the tibial width. Claws with fine teeth. Abdomen. Setae pale. Hypopygium, Figs 3 C, D. Colour fainted in the specimen, setae long and pale. Gonocoxa slightly longer than gonostylus, apically widened, mesial margin with long and sparse setosity. Gonostylus slightly curved, eventually narrowed towards apex, with the mesial side weakly impressed, with a dense vestiture, with a short and thick apical tooth, with 3 slender megasetae in subapical group, without apical megasetae. Tegmen longer than broad, apically roundish, weakly sclerotized, aedeagal apodeme short.

Discussion. Ctenosciara crinita can be distinguished from all other known species of Ctenosciara by its unusually densely setose gonostylus with a short and broad apical tooth of gonostylus and unusually slender megasetae. Furthermore, the gonocoxa of the holotype seems to be broadened towards its apical part, but this may be an artefact.

Etymology. The name is Latin, crinita , hairy, referring to the richly setose gonostylus.

Figures

FIGURE 3. Ctenosciara crinita sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Apical part of front tibia, prolateral view. C. Part of hypopygium, ventral view. D. Gonostylus, ventral view. Scale 0.1 mm.