Bradysia chlorocornea Mohrig & Menzel, 1992

Heller, Kai, Hippa, Heikki & Vilkamaa, Pekka, 2015, Taxonomy of Bradysia Winnertz (Diptera, Sciaridae) in the Northern Holarctic, with the description of four new species, European Journal of Taxonomy 122, pp. 1-15 : 6-7

Bradysia chlorocornea Mohrig & Menzel, 1992

Fig. 3 A–B

Material examined

FINLAND: Regio kuusamoensis, Kuusamo, Kuohusuo-Kalliovaara 30 km S of Kuusamo, 65.43° N, 29.05° E, 270 m, spruce/birch swamp forest, Malaise trap, 2–15 Aug. 2004, M. & C. Jaschhof, 4 ♂♂, MZH.

Redescription (male)

HEAD. Brown, antennal flagellomeres 1–2 yellow, scapus, pedicellus and flagellomere 3–14 pale brown; maxillary palpus very pale brown. Eye bridge 3 facets wide. Face with 10–15 scattered longer and shorter setae. Clypeus with 1–3 setae. Maxillary palpus with 3 segments; segment 1 longer than segment 3, segment 2 shortest; segment 1 with 3–4 setae, with dorsal patch of sensilla; surface of antennal flagellomeres smooth, body of flagellomere 4 2.3–2.7× as long as wide, neck shorter than broad, longest setae as long as width of flagellomere.

THORAX. Brown, setae pale. Anterior pronotum with 3–8 setae. Episternum 1 with 7–15 setae. Scutum with long dorsocentrals, with some longer and shorter laterals, scutellum with 2 longer and some short setae.

WING. Hyalinous. Length 1.7–1.9 mm. Width/length 0.40. Veins distinct. R1/R 0.70–0.85. c/ w 0.70 – 0.80. r-m and bM subequal in length. bM non-setose, r-m non-setose or with 1 seta.

LEGS. Yellow. Coxal setae pale. Front tibial organ with pale vestiture forming a short row. Front tibial spur slightly longer than tibial width. Claws with teeth.

ABDOMEN. Pale brown, setae pale.

HYPOPYGIUM ( Fig. 3 A–B). Brown, concolorous with abdomen.

GONOCOXA. Narrow, longer than gonostylus, mesial margin with rather dense setosity.

GONOSTYLUS. Narrow, broadest at middle, narrowed towards apex, with mesial side weakly impressed at apical half; with dense apical setosity, without apical tooth, with 5–6 apical megasetae whip-lash in form. Tegmen conical, apically roundish, with straight lateral sides, weakly sclerotized, with large area of aedeagal teeth, laterally straight. Aedeagal apodeme short.

Remarks

Bradysia chlorocornea was described from three males from Japan ( Mohrig et al. 1992). By having bi-coloured antennal flagellomeres and the tarsal claws with teeth, it belongs to the Bradysia fungicola group of Menzel & Mohrig (2000). By its slender gonostylus with an apical group of slender, subequal megasetae it resembles B. affinis (Zetterstedt, 1838) , but it can be distinguished by having the megasetae more slender and longer.

Figures

Fig. 3. Bradysia chlorocornea Mohrig & Menzel, 1992 (from Finland). A. Gonostylus, ventral view. B. Part of hypopygium, ventral view. Scales = 0.1 mm.