Zeuxevania orientalis Li & Xu

Li, Yi-Cheng & Xu, Zai-Fu, 2017, First record of the genus Zeuxevania Kieffer, 1902 from Oriental Region (Hymenoptera: Evaniidae), Zootaxa 4286 (1), pp. 129-133 : 130-133

Zeuxevania orientalis Li & Xu , sp. nov. ( Figs 1–10)

Material examined. Holotype: ♂, CHINA: Yunnan Province, Tengchong County, Houqiao Town , 1.VI.2009, Geng-yun Niu ( SCAU) . Paratype: 1 ♂, same locality and date as holotype, Mei-cai Wei ( SCAU) .

Diagnosis. Zeuxevania orientalis Li & Xu , sp. nov. can be separated from other Zeuxevania species by the following characters: head black, with face and lower part of gena yellowish-brown to brown; mesosoma black; petiole mostly black, with apex yellowish-brown; flagellomere 1 about as long as flagellomere 2; pronotum lateral angles rounded, enlarged and exceeding to tegulae laterally; mesoscutellum moderately depressed laterally and slightly angulate postero-laterally; fore wing membrane wholly hyaline; hind tibia and first tarsomere without small spine; petiole laterally 3.2 × as long as propodeum dorsally.

Description. Holotype. Male. Body length 4.4 mm; fore wing length 5.3 mm.

Head. Head fully pubescent and finely and sparsely punctate; hemispherical in lateral view and circular in frontal view. Toruli slightly ventral to vertical midline of eye. Antennal sockets clearly separated. Face slightly convex; lower face with a small tubercle medially. Apex of clypeus moderately protruded medially. Malar carina absent. Malar space length 1.2 × as long as basal width of mandible. Antennal scape 2.8 × as long as wide; pedicel as long as wide; antennal segments in following proportions: 52:15:59:60:58:55:47:47:44:40:38:36:46. Mandible with three teeth, apical tooth longer and sharper than other two. Maxillary and labial palpi without swelling, with 5 and 4 segments, respectively. Eye elliptical, 0.5 × as wide as high at widest point. OOL:POL:OD=3:3:2. Occipital carina complete.

Mesosoma . Mesosoma fully pubescent, 1.4 × as long as high in lateral view. Pronotum lateral angles rounded, enlarged and exceeding to tegulae laterally. Mesoscutum finely and sparsely punctate; 0.7 × as long as wide; moderately convex medially, slightly depressed antero-laterally and slightly angulate postero-laterally. Notauli complete, not straight and not collided posteriorly. Parapsidal furrows present posteriorly. Mesoscutellum finely and sparsely punctate; 0.9 × as long as mesoscutum; moderately convex medially, moderately depressed laterally and slightly angulate postero-laterally. Metanotum irregularly foveolate. Propleuron, mesopleuron and metapleuron weakly reticulate-rugose. Propodeum reticulate-rugose. Metasternal processes divergent. Distance between mid and hind coxae distinctly shorter than distance between fore and mid coxae (4:9). Hind leg 4.8 × as long as mesosoma height. Hind femur 0.9 × as long as hind tibia; hind tibia and first tarsomere without small spine; hind tibia 0.9 × as long as hind tarsus; hind inner tibial spur 1.8 × as long as outer spur, 0.7 × as long as first tarsomere of hind tarsus; first tarsomere of hind tarsus 0.7 × as long as hind tarsomeres 2–5 combined; tarsal claw bidentate. Fore wing with 6 closed cells; vein 1RS absent, fusing basal and 1st submarginal cells; vein 2cu-a, 3RS, and 4RS distinctly present; 2Mb+3M spectral reaching to outer margin. Hind wing with distinct vein M+CU, and with eight hamuli.

Metasoma. Petiole fully pubescent, finely and sparsely punctate dorsally, smooth ventrally; about as wide as high; 9.1 × as long as wide; laterally 3.2 × as long as propodeum dorsally. Metasoma fully pubescent and finely punctate; elliptical in lateral view.

Colouration. Head black, with face and lower part of gena yellowish-brown to brown. Mandible yellowish-brown, with teeth blackish-brown. Maxillary and labial palpi yellowish-brown. Antenna blackish-brown, with scape and first flagellomere brown ventrally. Mesosoma black. Fore leg brown, with coxa and femur partly blackish-brown. Mid leg brown, with coxa black and femur blackish-brown. Hind leg black, with anterior one third of tibia brown, spurs and tarsus yellowish-brown. Petiole mostly black, with apex yellowish-brown. Metasoma black. Wing membrane hyaline; vein blackish-brown.

Female. Unknown.

Variation. Paratype: body length 5.0 mm; fore wing length 5.6 mm; hind wing with nine hamuli.

Biology. Unknown.

Distribution. China (Yunnan).

Remarks. The new species similar to Z. variabilis Benoit , but it can be distinguished from the latter by: body mostly black (mostly blackish-brown in Z. variabilis ); antenna blackish-brown, with scape and first flagellomere brown ventrally (antenna blackish-brown, with flagellomeres 1–4 pale yellow to yellowish-brown in Z. variabilis ); flagellomere 1 about as long as flagellomere 2 (about 2.0 × in Z. variabilis ); and petiole laterally 3.2 × as long as propodeum dorsally (2.5 in Z. variabilis ).

Etymology. The specific name “ orientalis ” refers to first record of this genus in Oriental region.