Ledomyia Kieffer, 1895

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 : 45-48

Ledomyia Kieffer, 1895

Lepidomyia Kieffer, 1894: 201 , preoccupied by Loew, 1864.

T y p e s p e c i e s: L epidomyia lugens Kieffer, 1894: 211 (monotypy).

Ledomyia Kieffer, 1895 : cccxx, new name for Lepidomyia Kieffer.

D i a g n o s i s ( fig. 6, 1–7 ; 8 , 3 , 4 ). Wing, body and legs are conspicuously covered by scales. Antennae are 2+8–12-segmented. Male flagellomeres subcylindrical with neck and swollen basal enlargement. Female flagellomeres elongated, sessile, without neck. Tarsal claws toothed on the forelegs, toothed or simple on the mid- and hindlegs. Palpi are mostly 4-segmented, labrum triangular. Wing is broad, R 1+2 joins C before its midlength. R 4+5 is straight or curved, joins C rather far before wing apex; C broken at junction with R 4+5; Cu is forked. Genitalia are transversal. Gonocoxites are ovoid or parallel-sided. Gonostylus is short, excavated ventrally, terminated by very wide apical or dorso-apical claw, protruding from dorsal part of gonostylus. Cerci are cordiform with very deep excision. Hypoproct slightly caved. Aedeagus usually equal or longer than gonocoxites. Basal processes of gonocoxites are well developed, strongly narrowed apically. Ovipositor very long, extensible, apically with two terminal lamellae with two small, obtuse spines.

Рис. 6. Ledomyia olgae , самец, голотип (инв. номер K–3697 коллекции Института зоологии НАН Украины): 1 — общий вид; 2, 3 — щупик (изменчивость формы); 4 — 9–11-й членики жгутика, 5 — 5-й членик жгутика, 6, 7 — гениталии (6 — снизу, 7 — сверху). Масштабные линейки 0.1 mm.

Fig. 7. Rovnobrachineura kiryeyevi , самец, голотип (инв. номер K–3701 коллекции Института зоологии НАН Украины) (1–3); Brachineura polessica , самка, голотип (инв. номер K–1236) (4, 5); Rhizomyia parkalovi , самка, голотип (инв. номер K–7385) (6, 7): 1, 4, 6 — голова и антенна (1 — ×129; 4 — ×62; 6 — ×117); 2 — гениталии (×283); 3, 5, 7 — общий вид (3 — ×46; 5 — ×29; 7 — ×39).

Fig. 8. Popovineura nacta , самец, голотип (инв. номер K–666 коллекции Института зоологии НАН Украины) (1, 2); Ledomyia olgae , самец, голотип (инв. номер K–3697) (3, 4); Nascensluna mellea , самка, голотип (инв. номер K–1601) (5–7): 1–3, 7 — общий вид (1 — ×45; 2 — ×38; 3 — ×48; 7 — ×64); 4 — антенна (4 — ×129); 5 — задняя нога (×82); 6 — голова и антеннa (×131).

Species included. The genus is nearly cosmopolitan, two species were described from tropical regions ( Fedotova, Sidorenko, 2007). Genus includes 26 species, 17 of them are Palaearctic ( Mamaev, 1967; Skuhravá, 1997; Gagné, 2004, 2010; Fedotova, Sidorenko, 2007; Fedotova, Perkovsky, 2008). Some undescribed species are known from Middle Miocene Mexican amber ( Gagné, 1973) and Late Eocene Baltic amber, part of species were mistakenly included in extinct genus Ledomyiella Meunier, 1904 , known from Baltic amber. From Late Eocene Rovno amber was described Ledomyia dextra Fedotova et Perkovsky, 2008 .

Most of the included species have been reared from fresh-cut logs ( Gagné, 1985, 2010; Rock, Jackson 1985). Ledomyia collarata Gagné, 1987 was reared from galls on a fungus Xylaria enterogena Mont. ( Xylariaceae, Ascomycetes ) ( Larew et al., 1987); its adults are unknown and the species is only tentatively placed in this genus.

Figures

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. 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. 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. 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. 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).