Popovineura nacta Fedotova et Perkovsky, 2014

Fedotova, Z. A. & Perkovsky, E. E., 2014, New Gall Midges (Diptera, Cecidomyiidae, Brachineurini, Ledomyiini) From The Late Eocene Rovno Amber, Vestnik Zoologii 48 (1), pp. 35-50 : 41-42

Popovineura nacta Fedotova et Perkovsky , sp. n.

M a t e r i a l. Holotype. SIZK N K–666 , well preserved inclusion of male with tarsi partly missing, Klesov , Rovno amber, Late Eocene ( fig. 3, 1–8; 8, 1, 2 ) . Syninclusions: K–667: Sciaridae ; K–668: female of biting midge Eohelea sinuosa (Meunier) .

D e s c r i p t i o n. M a l e ( fig. 3, 1–8; 8, 1, 2 ). Body (without genitalia) is 1.1 times longer than antennae. Wings are 1.3 times as long as antennae. Head with large eyes, that laterally cover almost all lateral side of head. Scape enlarged distally, almost as long as wide round pedicel. First flagellomere slightly longer than 2nd and with longer neck (2.2 times as long as wide); 2nd flagellomere strongly narrower and slightly shorter than1st. Fifth flagellomere 2.4 times as long as wide, neck 2.3 times shorter than basal enlargement, 1.3 times shorter than 1st flagellomere. Tenth flagellomere 1.5 times as long as wide, with very short neck; 11th flagellomere slightly narrowed distally, shorter than 10th. Palpi are very narrow, laterally parallelsided, its 2nd segment is 1.7 times as long as 1st. Wing 2.2 times as long as wide. Vein R 1+2 unclear, R 4+5 slightly curved, joining wing margin almost as far from tip of wing as Cu. Gonocoxites are slightly rounded laterally, 3.3 times as long as wide. Gonostylus is slightly curved, almost parallelsided, 1.5 times shorter than gonocoxites. Cerci are much wider than gonocoxites. Hypoproct is as long as cerci, 2.3 times shorter than cerci. Aedeagus is rounded apically.

M e a s u r e m e n t s, mm: body length, 0.95; wing length, 1.1; wing width, 0.50; antennal length, 0.86; head length, 0.30; width of lateral side of head, 0.20; thorax length, 0.37; length of middle: femur 0.48; tibia 0.52; metatarsus, 0.09; length of hind: femur, 0.47; tibia, 0.39; tarsi, 0.39.

E t y m o l o g y. The species name (adj.) comes from the Latin nactus (perfect participle from nanciscor meaning to encounter).

Figures

Fig. 3. Popovineura nacta, male, holotype (SIZK, N K–666): 1 — general appearance; 2 — scape, pedicel, flagellomeres 1–2; 3 — flagellomeres 5–6; 4 — flagellomeres 8–11; 5 — palpus; 6 — fore tarsus; 7 — fore tarsomere 5; 8 — genitalia. Scale bars 0.1 mm.

Fig. 1. Rovnobrachineura kiryeyevi, male, holotype (SIZK, N K–3701): 1 — general appearance; 2 — scape, pedicel, flagellomeres 1–2; 3 — flagellomeres 8–10; 4 — flagellomeres 6–7; 5 — mouth parts and palpi; 6 — genitalia dorsally. Scale bars 0.1 mm.

Fig. 2. Brachineura polessica, female, holotype (SIZK, N K–1236): 1 — general appearance; 2 — scape, pedicel, flagellomeres 1–2; 3 — flagellomeres 9–10; 4 — flagellomeres 6–7; 5 — flagellomeres 3–5; 6 — palpus; 7 — middle tarsomeres 3–5; 8 — middle tarsomeres 1–2; 9 — middle tarsomere 1; 10 — middle tarsomere 5; 11 — ovipositor laterally. Scale bars 0.1 mm.

Fig. 4. Nascensluna mellea, female, holotype (SIZK, N K–1601): 1 — general appearance; 2 — flagellomeres 8–10; 3 — flagellomere 5; 4 — ovipositor. Scale bars 0.1 mm.

Fig. 5. Rhizomyia parkalovi, female, holotype (SIZK, N K–7385): 1 — general appearance; 2 — head; 3 — palpus; 4 — flagellomeres 9–10; 5, 6 — tarsomere 1 (variability of shape); 7 — flagellomere 5; 8 — apex of abdomen. Scale bars 0.1 mm.

Fig. 6. Ledomyia olgae, male, holotype (SIZK, N K–3697): 1 — general appearance; 2, 3 — palpi (variability of shape); 4 — flagellomeres 9–11; 5 — flagellomere 5; 6, 7 — genitalia (6 — ventral view,7 — dorsal view).Scale bars 0.1 mm.

Fig. 7. Rovnobrachineura kiryeyevi, male, holotype SIZK, N K–3701 (1–3); Brachineura polessica, female, holotype (SIZK, N K–1236) (4, 5); Rhizomyia parkalovi, female, holotype (SIZK, N K–7385) (6, 7): 1, 4, 6 — head and antenna (1 — ×129; 4 — ×62; 6 — ×117); 2 — genitalia (×283); 3, 5, 7 — general appearance (3 — ×46; 5 — ×29; 7 — ×39).

Fig. 8. Popovineura nacta, male, holotype (SIZK, N K–666) (1, 2); Ledomyia olgae, male, holotype (SIZK, N K–3697) (3, 4); Nascensluna mellea, female, holotype (SIZK, N K–1601) (5–7): 1–3, 7 — general appearance (1 — ×45; 2 — ×38; 3 — ×48; 7 — ×64); 4 — antennae (4 — ×129); 5 — hind leg (×82); 6 — head and antenna (×131).