Trichosiopsis melanoxera
Ordo: Diptera
Familia: Sciaridae
Genus: Trichosiopsis
Name
Trichosiopsis melanoxera (Mohrig & Menzel), 1997 – Wikispecies link – ZooBank link
- Leptosciarella (Leptosciarella) melanoxera Mohrig & Menzel, 1979)[1]: 71-72, fig. 20
Type material
Holotype: ♂, 18.06.1969, leg. Krivoshapov, PWMP 4028
Type locality
Russia, Primorsk Region, Nature Reserve Ussuriysk
Description (male)
Head. Eye bridge 3–4 rows of facets. LW-index of 4th antennal flagellar segment 2.5–2.7; neck 0.32–0.42 of segment width; Transition of basal part to neck pronounced. Colour of neck unicolour. Antennal hairs shorter than segment width; dense; salient. Palps darkened; long; palpomeres 3. First palpomere elongate; with 6–9 bristles; with only some sparse sensillae. Second palpomere elongate. Third palpomere as long as first segment. Thorax. Colour very dark, or brown. Notum unicolour. Thoracic setae long and strong; dark. Mesonotum with some weaker central bristles. Posterior pronotum bare. Mesothoracic sclerites bare. Legs. Colour yellow. Hind coxae darkened. Hairs on fore coxae black. Front tibia apically with a patch of setae. Front tibial organ dark. Front tibial organ not bordered. Tibial setae on hind legs normal, shorter than tibial width. Tibial spurs of equal length. Claws untoothed. Wings. Wings slightly darkened, or very dark; of normal shape. Wing membrane without macrotrichia. Wing venation weak, with faint m-base. M-fork of normal shape. R1 inserting clearly after base of m-fork; posterior veins with macrotrichia; stM with a few macrotrichia; cuA1 and cuA2 mainly with macrotrichia; bM bare; r-m mostly setose; bM:r-M 0.7–0.9; st-Cu:bM 0.21–0.31; r1:r 1.35–1.6; C:w 0.65–0.75. Halteres dark; of normal length. Abdomen. Abdominal setae strong and dense; dorsally dark; ventrally dark. Hypopygium concolour with abdomen; 0.6–0.75 × longer than wide. Base of gonocoxites with strong setae; gonocoxites broadly separated; inner margin of gonocoxites normally U-shaped; inner membrane of hypopygium scarcely setose; elongated setae on valves of hypopygium absent. Gonostylus elongate; 2.19–2.4 × longer than wide; Inner margin straight, or concave; apex equally rounded. Apical tooth present; 1.8–2.2 × longer than broad; normal. Awl-like setae normal; on inner side of gonostyles apically present. Megasetae on inner part of gonostylus absent. Whiplash-hair absent. Tegmen normal; Central process absent. Length of aedeagus/hypopygium 30–38 %; Aeadeagal apical structure absent, or present. Measurements. Body size 4.4–5 mm. Hind tibia 2.2–2.4 mm. Wing length 3.8–4.2 mm.
Diagnosis
Trichosiopsis melanoxera is one of the largest species in the genus Trichosiopsis. By the size, the dark body hairs, especially at the fore coxae and the bare pronotum it resembles Trichosiopsis yerburyi, which instead has darker legs and more tapered gonostyles. The apically rounded and elongate gonostyles place this species into the pilosa complex of species. Only the long hairs at the base of the hypopygium may indicate a closer relationship to the rejecta complex.
Discussion
The species is currently only known by the holotype.
Etymology
gr. μέλανος (melanos) = black, ξηρός (xeros) = dry.
Distribution
Russia[1].
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