Adelencyrtus brachycaudae Xu & Shi

Zhang, Yan-Zhou & Shi, Zhen-Ya, 2010, The species of Adelencyrtus Ashmead and Epitetracnemus Girault (Hymenoptera: Encyrtidae) from China, Zootaxa 2605, pp. 1-26 : 8-9

5. Adelencyrtus brachycaudae Xu & Shi

( Figs 20−25 )

Adelencyrtus brachycaudae Xu and Shi, 1999: 202 , 206. Holotype Ψ (HNAU, examined), China. Adelencyrtus brachycaudae ; Zhang & Huang, 2004: 22; Xu & Huang, 2004: 35.

Description. Female. Body length 1.1−1.4 mm. Body dark brown with green or blue sheen; antenna ( Fig. 20 ) generally dark or dark brown with F6 yellowish and sometimes F5 ventrally yellowish; fore wing ( Fig. 21 ) distinctly infuscate, with two hyaline spots beyond stigmal vein; fore leg dark brown except apices of femur and tibia marked with yellow; mid leg yellow except coxae entirely, femur subapically, and tibia subbasally marked with dark brown ( Fig. 23 ); hind leg yellow except coxa entirely, femur largely, median 1/3 of tibia, and apical tarsomere dark brown ( Fig. 24 ).

Head. Frontovertex about 1/4 head width; ocelli arranged in an angle of about 45º; posterior ocelli touching inner eye margin, and separated from occipital margin by about 3 × its own diameter; antennal scape about 4 × as long as broad; F1−F4 transverse and subequal in size, F5 and F6 subquadrate; clava about as long as funicle; mandible quadridentate.

Thorax. Fore wing about 2.5 × as long as broad; marginal vein about 3 × as long as broad; stigmal vein about 2/3 as long as marginal vein; postmarginal vein about as long as stigmal vein ( Fig. 21 ).

Gaster. Ovipositor sheaths ( Fig. 25 ) slightly exserted, by about 1/7 gaster length.

Relative measurements. MT 48, OL 66, GL 16.

Male. Similar to female except for antennae and genitalia; antenna with scape yellowish, the rest dark yellowish-brown; wings hyaline ( Xu & Shi 1999).

Host. Unidentified diaspidid on Pittosporum tobira (Thunb.) ( Xu & Shi 1999) .

Distribution. China (Hainan, Hunan, Yunnan).

Type material examined. CHINA: Hunan, Changsha, 14.v.1989, ex. Diaspididae , coll. G. Xu (holotype Ψ, allotype ɗ, and 5ΨΨ paratypes, HNAU).

Non-type material examined. CHINA: Hainan, Danzhou, Nada, 18.iv.2005 (1 Ψ), 16.v.2007 (1 Ψ), coll. Y.Z. Zhang; Diaoluo Mt., 6.v.2007, coll. Y.Z. Zhang (1 Ψ). Yunnan, Xishuangbanna, 13.xi.2002, coll. W.Q. Zhen (1 Ψ); Xishuangbanna, 6.viii.2007, coll. G. Zheng (5 ΨΨ).

Comments. Adelencyrtus brachycaudae is very similar to A. inglisiae Compere & Annecke from South Africa in general coloration. The latter species is also very close to A. depressus (Risbec) from Madagascar ( Noyes & Prinsloo 1998). Additional study is needed to determine whether these three names represent distinct species or are synonyms.

Figures

FIGURES 20 − 25. 20 − 25, Adelencyrtus brachycaudae, female: 20, antenna; 21, fore wing; 22, fore leg; 23, mid leg; 24, hind leg; 25, part of gaster showing ovipositor.