Ctenosciara exilis, 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 : 45

Ctenosciara exilis sp. n.

Figs 6 A–C

Material studied. Holotype male. NEW CALEDONIA, Rivière Bleue N.P., (parc 7), rainforest, 21.VII.1992, Bonnet de Larbogne, Chazeau & Guilbert (in MNHN).

Description. Male. Head. Brown, antenna unicolorous pale brown, maxillary palpus very pale brown. Eye bridge 3–4 facets wide. Face with 15 scattered longer and shorter setae. Clypeus non-setose. 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. 6 A) 2.4x as long as wide, the neck shorter than broad, the longest setae slightly shorter than the width of flagellomere. Thorax. Brown, setae dark. Anterior pronotum with 7 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 1.7 mm. Width/length 0.45. Veins distinct. R1/R 0.75. c/ w 0.65. r-m and bM subequal in length. M and CuA setose, r-m with 6 setae, bM with 2 setae. Legs. Yellow. Coxal setae pale. Front tibial organ with pale vestiture forming a long complete row. Front tibial spur slightly longer than the tibial width. Claws with a basal tooth. Abdomen. Brown, setae dark. Hypopygium, Figs 6 B, C. Brown, concolorous with abdomen. Gonocoxa slightly longer than gonostylus, mesial margin with sparse setosity. Gonostylus straight, narrow, with the mesial side weakly impressed at apical half; with a dense apical vestiture, with a strong apical tooth, with 3–4 megasetae located subapically in two groups, without apical megasetae. Tegmen apically roundish, weakly sclerotized, aedeagal apodeme long.

Discussion. See under Ctenosciara cracens .

Etymology. The name is Latin, exilis , slender, referring to the gonostylus.

Figures

FIGURE 6. Ctenosciara exilis sp. n. (holotype). A. Antennal flagellomere 4, lateral view. B. Part of hypopygium, ventral view. C. Gonostylus, ventral view. Scale 0.1 mm.