Corynoptera praeparvula Mohrig & Krivosheina, 1983

Babytskiy, A. I., Zuieva, O. A., Bezsmertna, O. O. & Dudiak, I. D., 2019, The First Records Of Corynoptera Species (Diptera, Sciaridae) From Ukraine, Vestnik Zoologii 53 (3), pp. 227-236 : 230-231

Corynoptera praeparvula Mohrig & Krivosheina, 1983 ( figs 9–16 )

M a t e r i a l e x a m i n e d. Ukraine, Volyn Region, outskirts of Solovychi village : 51.06260 N 024.48169 E, altitude ca. 180 m, dry meadow with pine planting, with exhauster, 8.08.2015, 1 Ơ, leg. A. Babytskiy (No 146) .

D i s t r i b u t i o n: Andorra, Britain Is., Bulgaria, Canary Is., Czech Republic, Germany, Greek mainland, Italian mainland, Slovakia, Spanish mainland ( Menzel & Heller, 2013), Turkmenistan ( Hippa & Vilkamaa, 1994; Roskov et al., 2017), Ukraine (first record).

Diagnosis. Male imagoes reach 1.6 mm in length. Eye bridge consists of 3–4 rows of ommatidia ( fig. 16 ). Maxillary palpus consists of 3 segments (palpomeres); basal palpomere with 1 setae and sensory pit ( fig. 15 ). Length/width of 4th flagellomere is 1.40–1.80 ( fig. 12 ). Thorax is dark, mesonotum setosed ( fig. 9 ). Gonocoxa and legs are bright. Abdomen is short and light haired. Tibial organ t 1 is unbordered, with unarranged patch of setae ( fig. 13 ). Length of spur/width of tibia: leg 1 = 1.10–1.70, leg 2 = 1.70–1.90; leg 3 = 1.55–1.70. Length of metatarsus/length of tibia: leg 1 = 0.50, leg 2 = 0.45–0.50; leg 3 = 0.45. Length of tibia 3/length of thorax 1.10–1.20. Wing length is 1.1–1.5 mm; width/length of wing 0.40–0.45; stM is barely visible; c/w = 0.60–0.65; r 1 /r = 0.60–0.70; y without or with 1 macrotrichia ( figs 15 ). Helter is dark. Hypopygium is pretty short and light haired ( fig. 11 ). Gonostylus is conspicuous, with 2 long and 1 shorter megasetae at the apex, also 2 long megasetae with high sockets are present on the inner part of gonostylus ventral side ( fig. 10 ). Gonostylus dorsal side is wing-like extended; inner part of gonostylus is concave ( Mohrig et al., 1983; Hippa & Vilkamaa, 1994).

Corynoptera praeparvula belongs to the large C. parvula -Group contains 30 species which differ from the other Corynoptera by the presence of one or more spine curving inwards and downwards on the middle and lower half of the gonostylus inner side ( Menzel & Mohrig, 2000). Corynoptera praeparvula is similar to C. ignorata Mohrig & Froese, 1992 , C. disporata Mohrig, 1994 and C. cruciata ( Hippa & Vilkamaa, 1994) . Corynoptera praeparvula is distinguishes from: C. ignorata by absence of additional mesial megaseta on the gonostylus, arising from the large basal body of the more apical and ventral megaseta; C. disporata by all apical megaseta situated more ventrally than in C. disporata one apical megaseta located more dorsally; C. cruciata by having more parallel megaseta, unlike C. cruciata megaseta are strongly convergent, crossing or near so, also gonostylus of C. cruciata is more massive and laterally more strongly arcuate ( Hippa & Vilkamaa, 1994).

N o t e. Vein y bare, r 1 with 2–3 macrotrichia ( fig. 15 ). Biometric indexes of studied specimen: wing length — 1.16–1.17 mm, wing width — 0.47–0.48 mm; width/length of wing 0.40– 0.41; stM/M-fork = 1.22; r 1 /r = 0.55–0.59; x/y = 0.88–0.91; stCu/x = 0.17–0.33; c/w = 0.53. Length of spur/width of tibia: leg 1 = 1.02–1.05, leg 2 = 1.42; leg 3 = 1.27. Length of metatarsus/length of tibia: leg 1 = 0.44, leg 2 = 0.42, leg 3 = 0.43. Length of tibia 3/length of thorax 1.11.

Figures

Figs 9–16. Corynoptera praeparvula, male: 9 — thorax; 10 — ventral view of gonostyles; 11 — general view of hypopygium ventral; 12 — the fourth flagellomere; 13 — front tibial (t1) organ; 14 — basal palpomere of maxillary palpus; 15 — wing; 16 — eye bridge. Scale bars: 9, 11, 15 — 0.20 mm; 10, 12, 13, 14, 16 — 0.05 mm.