Epitetracnemus Girault

Zhang, Yan-Zhou & Shi, Zhen-Ya, 2010, The species of Adelencyrtus Ashmead and Epitetracnemus Girault (Hymenoptera: Encyrtidae) from China, Zootaxa 2605, pp. 1-26 : 16-17

Epitetracnemus Girault

Epitetracnemus Girault, 1915: 164 . Type species: Epitetracnemus sexguttatipennis Girault , by original designation. Anabrolepis Timberlake, 1920: 431 . Type species: Anabrolepis extranea Timberlake , by original designation. Synonymy with Epitetracnemus by Noyes and Hayat, 1984: 273.

Diagnosis. Female. Body length 0.8−1.8 mm (including ovipositor sheaths); head triangular in profile, strongly inflexed at top of antennal scrobes; frontovertex less than 1/4 width of head; ocelli usually forming an acute angle; antennae 11-segmented; mandibles with four teeth, or with two teeth and an upper truncation; facial impression usually with a transverse line of silvery white setae at top of antennal scrobes (except E. sexguttatipennis Girault , see Dahms & Gordh 1997: 174); scutellum somewhat flattened or slightly convex, usually with sculpture deeper than that of mesoscutum (except E. bandus sp. n.); fore wing with an infuscate pattern and with at least four hyaline spots beyond marginal vein; marginal vein about 3 × as long as broad; postmarginal vein short; stigmal vein about as long as marginal vein; hypopygium extending to about half length of gaster. Male. Generally similar to female; antenna usually with two anelliform segments and a solid, banana-like clava ( Fig. 73 ); fore wing hyaline.

Epitetracnemus contains six species worldwide ( Noyes 2009), of which three have been reported from China ( Noyes & Ren 1987; Zhang & Huang 2004; Xu & Huang 2004). Other important references include Noyes & Hayat (1984), and Trjapitzin (1989). Tachikawa (1963b) gave a key to the Japanese species. Noyes & Ren (1987) gave a key to the world species. The following key is based on those by Tachikawa (1963b) and Noyes & Ren (1987).

Figures

FIGURES 69 − 73. 69 − 72, Epitetracnemus reni sp. n., female: 69, antenna; 70, fore wing; 71, mid leg; 72, ovipositor. 73, E. reni sp. n., male: antenna.