Camptochaeta curtipilosa, Vilkamaa & Menzel, 2017

Vilkamaa, Pekka & Menzel, Frank, 2017, Descriptions of new species of the genera Camptochaeta Hippa & Vilkamaa and Corynoptera Winnertz (Diptera, Sciaridae) from the Holarctic, Zootaxa 4353 (2), pp. 347-359 : 349-350

Camptochaeta curtipilosa sp. n.

Fig. 2 A, B

Material studied. Holotype male . USA, Colorado, Larimer Co., Pinewood Springs , woods/meadow/spring, Malaise trap, 7.IX–17.X.2014, S. & B. Fitzgerald (in MZH). Paratypes . Same data as holotype, 5 males (3 in MZH, 2 in SDEI).

Description. Male. Head. Face and antenna concolorous brown, maxillary palpus very pale brown. Eye bridge 2–3 facets wide. Face with 6–7 scattered longer and shorter setae. Clypeus with 1 pale seta or non-setose. Maxillary palpus with 3 segments; 3rd segment longer than 1 st segment , 2nd segment shortest; 1 st segment with 1 long sharp seta, with a deep regular pit of sensilla; body of 4th antennal flagellomere 3.1–3.9x as long as wide, surface smooth, neck slightly shorter than broad, the longest setae slightly longer than width of flagellomere. Thorax. Brown, setae pale. Anterior pronotum with 4–6 setae. Proepisternum with 6–10 setae. Wing. Fumose. Length 2.2– 2.6 mm. Width/length 0.40–0.45. Anal lobe moderate. R1/R 0.90–1.1. c/ w 0.70 –0.80. Veins distinct; stM slightly longer or as long as fork of M, bM as long as r-m, r-m with 1–5 dorsal setae, bM non-setose. Halter pale brown. Legs. Pale brown. Coxal setae pale. Fore tibial organ with pale vestiture in large demarcated patch in depression. Fore tibial spur subequal with the tibial width. Abdomen. Pale brown, setae pale and rather long and slender. Hypopygium ( Fig. 2 A ). Pale brown, concolorous with abdomen. Gonocoxa longer than gonostylus, gonocoxae separated, with rather short medial setosity. Gonostylus ( Fig. 2 B ) strongly narrowed apically, with the ventromedial side strongly impressed; apicomesially with a few elongated setae; with strong apical tooth, with one megaseta on the dorsal side of apical tooth, one megaseta in subapical on the ventral side of the base of tooth and one megaseta slightly more basal; megasetae subequal in length, nearly straight, shorter than apical tooth, with basal bodies; a flagellate seta at middle of gonostylus. Tegmen subtriangular, with sublateral sclerotized stripes on the apical half, with an area of distinct aedeagal teeth. Aedeagal apodeme rather strong.

Discussion. Camptochaeta curtipilosa sp. n. is very similar to C. fulvistylata sp. n. Both species have pale setosity, and a fairly similar structure of the gonocoxa, tegmen and gonostylus, with the subapical megasetae with distinct basal bodies. Camptochaeta curtipilosa can be distinguished from C. fulvistylata by its pale brown, not yellow, hypopygium and by its more richly setose gonocoxa and gonostylus with shorter setae. Furthermore, C. curtipilosa has a longer apical tooth of the gonostylus and antennal flagellomeres. See also under Camptochaeta chilkatensis .

Etymology. The name is formed from the Latin words curtus, short, and pilus, hair, referring to the short setosity of the hypopygium.

Figures

FIGURE2. Camptochaeta curtipilosasp.n. (Aparatype, Bholotype).A.Part of hypopygium,ventral.B.Gonostylus, ventral. Scale 0.10 mm.