Psyllaephagus densiciliatus Tan & Zhao, 1999

Zou, Boyu, Hu, Hongying, Zhang, Lanwei & Zhang, Yanzhou, 2023, A taxonomic study of Psyllaephagus Ashmead (Hymenoptera, Encyrtidae) from China, ZooKeys 1184, pp. 327-359 : 327

Psyllaephagus densiciliatus Tan & Zhao, 1999

Fig. 5

Psyllaephagus densiciliatus Tan & Zhao, 1999: 174-175. Holotype ♀, China, Yunnan (CNEP), photos of holotype examined.

Material examined.

China - Hainan • 2♀, Nada , 1.May.1964, leg. DX Liao ; 3♀♀, 1♂, Wuzhishan , 21.Jun.1999, leg. CD Zhu ; Yunnan • 2♀♀, Mengla , 23. July. 2004, leg. YZ Zhang ; Guangxi • 3♀♀, Fangcheng , 18. July. 2009, leg. YZ Zhang.

Diagnosis.

Female. Body length ~ 2.2 mm; legs yellow, but mid and hind coxae dark brown (Fig. 5E, F ); antenna with all funicular segments longer than broad, F6 sometimes subquadrate (Fig. 5A ); ovipositor slightly exserted; OL ~ 1.2 × MT.

Description.

Female. Body length ~ 2.2 mm, metallic green; frontovertex and face with green-violet sheen. Antenna scape and pedicel dark brown, funicular segments brown but F6 yellow; mesoscutum with a coppery sheen; axilla and scutellum with blue sheen; basal 1/2 of tegula yellow, apex dark brown; mesopleuron metallic green mixed with golden sheen; legs yellow, but mid and hind coxae dark brown; basal 1/4 of metasoma with a metallic green sheen, remainder coppery; wings hyaline, venation brown.

Head ~ 3.0 × as wide as frontovertex; head with reticulate sculpture; ocelli forming angle of ~ 90°; OCL ~ 1.7 × diameter of posterior ocellus; OOL ~0.6 × diameter of posterior ocellus; POL ~ 3.8 × diameter of posterior ocellus; mandible with one tooth and a broad truncation; antenna with scape ~ 4.9 × as long as wide; pedicel ~ 2.0 × as long as wide; all funicular segments longer than wide; clava 3-segmented, 2.5 × as long as wide, slightly shorter than F4-F6 combined. Relative measurements: HW 32; HL 14; FV 9.7; OOL 0.8; POL 7.2; OCL 2.4; SW 3.1; SL 14.

Mesosoma. Dorsum distinctly convex; MSW ~ 1.5 × MSL; scutellum ~ 1.1 × as long as wide; mesoscutum dorsally with reticulate sculpture similar to that on frontovertex; sculpture on scutellum similar to that on mesoscutum but clearly deeper; fore wings ~ 2.2 × as long as wide; marginal vein quadrate; postmarginal vein short, ~ 1.3 × as long as wide; stigmal vein 4.9-as long as wide, STV ~ 3.3 × PMV; mid tibial spur 0.7 × as long as basitarsus. Relative measurements: FWL 74; FWW 33.

Metasoma slightly longer than mesosoma; cercal plates located in posterior 3/5 of metasoma; hypopygium reaching ~3/4 of metasoma; ovipositor slightly exserted; OL ~ 6.1 × GL, and 1.2 × MT.

Male. Body length ~ 1.1 mm, generally similar to female, but mesoscutum with coppery sheen; ocelli forming an obtuse-angled triangle; clava unsegmented.

Variation.

A little variation was found in coloration of the scape: the scape is not always totally dark brown, sometimes the base is yellow (Fig. 5A ).

Host.

Unknown.

Distribution.

China (Guangxi, Hainan, Yunnan).

Figures

Figure 5. Psyllaephagus densiciliatus ♀ A antenna B fore wing C scutellum D fore leg E mid leg F hind leg G ovipositor.