Rhogadopsis Brethes, 1913

Figs 1, 2-10, 11, 12-22, 23, 24-32, 33, 34-42, 43, 44-52, 53, 54-62

Rhogadopsis Brèthes, 1913: 44; Shenefelt 1975: 1212; Wharton 1987: 66 (synonymy with subgenus Lissosema); Li et al. 2013: 147 (as valid genus). Type species (by monotypy): Rhogadopsis miniacea Brèthes, 1913 [examined].

Lissosema Fischer, 1972: 359. Type species (by original designation): Opius parvungula Thomson, 1895 [examined].

Diagnosis.

Propodeum with a medio-longitudinal carina anteriorly (Figs 4, 14, 26, 36); vein m-cu of fore wing gradually merging into 2-CU1 and linear with vein 2-M, rarely angulate; vein 1r-m of hind wing less oblique and 0.7-1.0 times as long as vein 1-M; mandible triangular and with narrow ventral carina; occipital carina remaining separate from hypostomal carina ventrally; precoxal sulcus usually present and crenulate; anterior groove of metapleuron nearly always crenulate; veins CU1b and 1-SR of fore wing medium-sized; dorsope absent.

Biology.

Parasitoids of Agromyzidae .

Key to species of Rhogadopsis from NW China

1Medio-posterior depression of mesoscutum absent (Figs 26, 36); ventral half of posterior groove of pronotal side sometimes smooth (Fig. 35)2
-Medio-posterior depression of mesoscutum present (Figs 4, 14, 46), but sometimes only point-like impressed; ventral half of posterior groove of pronotal side crenulate (Figs 13, 45)3
2Vein r of fore wing long and slender, at least 5 times longer than wide medially (Fig. 24); pronotum coarsely and densely crenulate posteriorly (Fig. 25); first tergite without long median carina (Fig. 27); [face strongly punctate and tricoloured laterally; clypeus about twice as wide as high hardly protruding ventrally; first metasomal tergite parallel-sided; vein m-cu rather angled with 2-CU1]R. longivena sp. n.
-Vein r of fore wing short and at most about twice as long as wide (Fig. 34); posterior groove of pronotum smooth or finely and sparsely crenulate (Fig. 35); first tergite with long median carina (Fig. 37); [propodeum largely smooth; setose part of ovipositor sheath about 0.7 times length of first tergite; clypeus about twice as wide as high, thin apically and evenly protruding; head brownish yellow anteriorly; posterior groove of pronotal side at least dorsally smooth]R. mediocarinata (Fischer, 1963)
3Mesoscutum of ♀ brownish yellow (Figs 55-56), of ♂ with brownish yellow or brown stripes; vein r of fore wing slenderer and about 3 times longer than its medial width (Fig. 54); area in front of notauli rugose (Fig. 55); metasoma of ♀ with yellow bands (Fig. 53; of ♂ mainly dark brown); vein 1-SR of fore wing 0.4-0.5 times as long as vein 1-M (Fig. 54); vein 3-SR 1.5-1.6 times as long as vein 2-SR; first metasomal tergite distinctly widened apically (Fig. 57); [apical half of parameres yellow; setose part of ovipositor sheath 0.6-0.7 times hind tibia and about 2.5 times as long as hind basitarsus (entire exserted sheath about 4 times (= equal to hind tibia)); vein 1r-m of hind wing 0.8-1.0 times as long as vein 1-M; ovipositor sheath lamelliform basally and glabrous]R. pratellae (Weng & Chen, 2005)
-Mesoscutum black or dark chestnut brown (Figs 4, 14, 46); vein r of fore wing wider and about twice as long as its medial width or less (Figs 12, 44); area in front of notauli smooth or punctate (Figs 13, 45); metasoma of ♀ without distinct yellow bands (Figs 11, 43); vein 1-SR of fore wing 0.3-0.4 times as long as vein 1-M (Figs 2, 12, 44); [apical half of parameres dark brown, brown or yellowish; length of eye 3.2-3.3 times temple in dorsal view]4
4Medially second and third tergites longitudinally rugulose-striate or aciculate (Fig. 5); vein r of fore wing about twice as long as wide (Fig. 2); first metasomal tergite distinctly widened apically (Fig. 5)R. aciculifera sp. n.
-Medially second and third tergites smooth (Figs 15, 47); vein r of fore wing about as long as wide (Figs 12, 44); first tergite less widened apically (Figs 15, 47); [vein 3-SR 1.7-2.0 times as long as vein 2-SR]5
5Setose part of ovipositor sheath 0.2 times hind tibia and slightly shorter than hind basitarsus (Fig. 21); third and fourth antennal segments of ♀ rather slender (Fig. 16); first metasomal tergite elongate, 1.7-1.9 times longer than its apical width (Fig. 15); hind femur slenderer, 4.5-4.7 times as long as wide (Fig. 21); vein m-cu of fore wing gradually merging into vein 2-CU1 (Fig. 12)R. cracentata sp. n.
-Setose part of ovipositor sheath 0.5-0.7 times hind tibia and about twice as long as hind basitarsus (Fig. 44); third and fourth antennal segments of ♀ robust (Fig. 52); first metasomal tergite rather stout, 1.2-1.4 times longer than its apical width (Fig. 47); hind femur wider, about 3.7 times as long as wide (Fig. 50); vein m-cu of fore wing rather angled with vein 2-CU1R. moniliata sp. n.