Ctenosciara obesa, 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 : 49-50

Ctenosciara obesa sp. n.

Figs 9 A–D

Material studied. Holotype male. NEW CALEDONIA, Mont Nondoué, sclerophyllous forest, 3.VII.1992, Bonnet de Larbogne, Chazeau & Guilbert (in MNHN).

Description. Male. Head. Brown, antenna unicolorous pale brown except scapus and pedicellus paler, maxillary palpus very pale brown. Eye bridge 3–4 facets wide. Face and clypeus poorly visible in the specimen. Maxillary palpus with 3 palpomeres; palpomere 3 longer than palpomere 1, palpomere 2 shortest; palpomere 1 with 2 setae, with a dorsal patch of sensilla; surface of antennal flagellomeres rough, flagellomere 4 ( Fig. 9 A) 2.70x as long as wide, the neck about as long as broad, the longest setae longer than the width of flagellomere. Thorax. Brown, setae dark. Anterior pronotum with 3 setae. Episternum 1 with 5 setae. Scutum with long dorsocentrals, with some longer and shorter laterals, scutellum with 4 longer and some short setae. Wing. Hyalinous. Length 1.7 mm. Width/length 0.40. Veins distinct. R1/R 0.80. c/ w 0.75. r-m and bM subequal in length. M and CuA setose, rm with 2 setae, bM non-setose. Legs. Yellow. Coxal setae pale. Apical part of front tibia, Fig. 9 B: tibial organ with pale vestiture forming a broken row. Front tibial spur longer than the tibial width. Claws with fine teeth. Abdomen. Pale brown, setae strong and long. Hypopygium, Figs 9 C, D. Brown, concolorous with abdomen. Gonocoxa longer than gonostylus, mesial margin with sparse setosity. Gonostylus curved and tumid, with the mesial side impressed; with a dense apical vestiture, with an apical tooth, with 8–9 slender megasetae in subapical group, megasetae rather straight; without apical megasetae. Tegmen truncate, weakly sclerotized, aedeagal apodeme long.

Discussion. See under Ctenosciara inflata .

Etymology. The name is Latin, obesa , corpulent, referring to the shape of the gonostylus.

Figures

FIGURE 9. Ctenosciara obesa 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.