Psyllaephagus stenopsyllae (Tachikawa, 1963)

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 stenopsyllae (Tachikawa, 1963)

Fig. 16

Metaprionomitus stenopsyllae Tachikawa, 1963: 182. Holotype ♀, Japan, not examined.

Psyllaephagus stenopsyllae : Trjapitzin 1967: 177; Tan and Zhao 1999: 175; Xu et al. 2000: 9; Japoshvili et al. 2016: 392.

Material examined.

China - Jiangxi • 6♀♀, Ganzhou, 15.Oct.2012, ex. Macrohomotoma sinica , leg. DY Huang ; Fujian • 7♀♀, 2♂♂, Huian, 20.May.2012, ex. Macrohomotoma gladiatean on Ficus sp., leg. YZ Zhang ; Sichuan • 17♀♀, 3♂♂, Chengdu, 21.Jun.2018, ex. Macrohomotoma gladiatean on Ficus sp., leg. YZ Zhang.

Diagnosis.

Female. Body length ~ 2.0 mm; all coxae and hind femora dark brown (Fig. 16D-F ); scape slightly expanded at apex; clava slightly short than F3-F6 combined (Fig. 16A ); ovipositor exserted, exserted part ~ 1/5 metasomal length (Fig. 16G ); OL ~ 1.9 × as long as MT.

Description.

Female. Body length ~ 2.2 mm, head with metallic green sheen; mesoscutum and scutellum with bluish violet sheen; metasoma with coppery sheen; basal ~ 1/4 of tegula pale yellow, the remainder dark brown; antenna completely dark brown; all coxae dark brown; hind femur dark brown, but apical ~ 1/4 yellow; wings hyaline, venation brown (Fig. 16B ).

Head with reticulate sculpture, HW ~ 3.3 × the HL in dorsal view, 3.1 × wide as frontovertex; ocellus forms an obtuse triangle, angle ~ 110°; OCL ~ 1.0 × diameter of posterior ocellus; OOL ~ 1.1 × diameter of posterior ocellus; POL ~ 4.0 × diameter of posterior ocellus; mandible with one tooth; scape slightly expanded and ~ 4.3 × as long as wide; pedicel ~ 1.8 × as long as wide; F1-F5 longer than broad, F6 quadrate; clava 3-segmented, nearly 2.3 × as long as wide, shorter than F4-F6 combined. Relative measurements: SL 10.9; SW 2.5.

Mesoscutum slightly convex; mesoscutum and scutellum with reticulate sculpture similar to that on frontovertex; MSW ~ 1.4 × as MSL; marginal vein subquadrate, slightly longer wide, stigmal vein ~ 7.2 × as long as wide, postmarginal vein ~ 1.6 × as long as wide, PMV ~ 0.7 × STV; mid tibia spur 0.8 × as long as basitarsus. Relative measurements: FWL 51.6; FWW 36.3.

Metasoma nearly as long as mesosoma; cercal plates located in middle of metasoma; hypopygium with apex reaching ~ 2/3 of metasoma; ovipositor exserted, exserted part of ovipositor ~ 0.1 × as long as metasoma; OL ~ 4.8 × GL, and 1.9 × MT.

Hosts.

Macrohomotoma gladiatuum Kuwayama, 1908, Stenopsylla nigricornis Kuwayama, 1910, Trioza syzygii Li & Yang, 1911 ( Hemiptera : Triozidae ).

Distribution.

China (Fujian, Hainan, Jiangxi, Taiwan); other countries: Japan, Iran.

Figures

Figure 16. Psyllaephagus stenopsyllae ♀ A antenna B fore wing C mesonotum D fore leg E mid leg F hind leg G ovipositor.