ZengJieHeJun-HuaChenXue-XinThe genera Deuterixys Mason, 1981 and Wilkinsonellus Mason, 1981 (Hymenoptera, Braconidae, Microgastrinae) from China, with description of two new speciesZookeys25720112011120274010.3897/zookeys.120.891 Deuterixys http://species-id.net/wiki/Deuterixys Mason, 1981DeuterixysMason 1981, 115: 123; Whitfeild 1985, 61(1): 60; Marsh et al. 1987, 13: 31; Whitfield and Wagner 1991, 25: 737; Austin and Dangerfield 1992, 6(1): 23.Type species:

Microgaster carbonarius Wesmael, 1835. Designated by Mason 1981.

Diagonosis.

Areolet of fore wing absent; propodeum polished and bearing a strong long medial carina; TI of metasoma with medio-basal longitudinal groove; TII and III broad, rectangular, and noticeably constricted or abruptly widened at the suture between them; ovipositor sheaths short, decurved and subexerted.

Key to the Old World species of the genus <italic><tp:taxon-name>Deuterixys</tp:taxon-name></italic> Mason, 1981
1TII+III enlarged to form a coarsely rugose carapace that completely hides the more apical segments; posterior margin of this carapace finely crenulate laterally. [Mesoscutum shiny, closely, rather strongly punctate for the size of the insect; hind coxa and underside of metasoma bright yellow; propodeum polished and with a strong medial keel; length: 1.8 mm]Deuterixys patro Nixon, 1965
–TII+III not thus enlarged, notched at the position of second suture but its posterior margin is membranous and smooth, the more apical segments exposed2
2TII less transverse, at most 1.7–1.8 times wider behind than long medially; legs yellow, hind tibia and tarsus more or less infuscate3
–TII more transverse, twice wider behind than long medially; legs dark brown, blackish to black4
3Vein 2-CU1 of fore wing twice as long as vein 1-CU1; TIII rugose to rugulose; preapical segment of antenna short, hardly twice as long as wideDeuterixys condarensis (Tobias, 1960)
–Vein 2-CU1 of fore wing as long as vein 1-CU1; TIII smooth and shiny; preapical segment of antenna long, more than twice as long as wideDeuterixys bifossalis Zeng & Chen, sp. n.
4TIII densely rugulose or subrugulose, dull; TII with rugosity almost similar to that of TI; TI parallel- or indistinctly subparallel-sided; propodeum medially with more or less transverse rugulosities along medial longitudinal keel, otherwise propodeum smooth5
–TIII chagreened or almost smooth, shiny; TI converging apically; propodeum smooth, at most with a few and very short rugulae along hind carina and above lunule6
5TI subrectangular, 1.2–1.3 times as long as wide; TII almost as long as TIII; inner hind tibial spurs much longer than half length of hind basitarsusDeuterixys carbonaria (Wesmael, 1837)
–TI more than 1.5 times longer than wide; TII distinctly longer than TIII; inner hind tibial spurs shorter than half length of hind basitarsusDeuterixys curticalcar Zeng & Chen, sp. n.
6Vein 1-R1 of fore wing as long as or slightly shorter than pterostigma. [TI posteriorly weakly to moderately converging, its basal width at most 1/3 greater than its apical width. Pterostigma less wide, 2.7–2.9 (-3.0) times longer than wide. First tergite always entirely black. Tegula brownish black to brownish yellow. Middle and hind femora black(ish)]Deuterixys rimulosa (Niezabitowski, 1910)
–Vein 1-R1 slightly longer than pterostigma7
7TI wedge-shaped, 1.6–2 times longer than wide at base; TII shorter than TIII, somewhat less transverse, twice wider behind than long medially; pterostigma 2.3–2.4 times longer than wideDeuterixys plugarui (Tobias, 1975)
–T1 widest about 2/3 distance from its base, anterior third and posteriorly with weakly converging sides, about 1.5 times longer than wide; TII slightly longer than TIII, somewhat more transverse, 2.2 times wider behind than long medially; pterostigma about 3 times longer than wideDeuterixys anica Austin & Dangerfield, 1992
WhitfieldJB (1985) The Nearctic species of Deuterixys Mason (Hymenoptera: Braconidae).Pan-Pacific Entomologist 61 (1): 60-67.MarshPMShawSRWhartonRA (1987) An identification manual for the North American genera of the family Braconidae (Hymenoptera).Memoirs of the Entomological Society of Washington13, 98 pp.WhitfieldJBWagnerDL (1991) Annotated key to the genera of Braconidae (Hymenoptera) attacking leafmining Lepidoptera in the Holarctic region.Journal of Natural History 25: 733-754. doi:10.1080/00222939100770481AustinADDangerfieldPC (1992) Synopsis of Australasian Microgastrinae (Hymenoptera: Braconidae), with a key to genera and description of new taxa.Invertebrate Taxonomy 6 (1): 1-76. doi:10.1071/IT9920001