Metaphycus cylindricus, Wang, Ying, Li, Cheng-De & Zhang, Yan-Zhou, 2014

Wang, Ying, Li, Cheng-De & Zhang, Yan-Zhou, 2014, A taxonomic study of Chinese species of the insidiosus group of Metaphycus (Hymenoptera, Encyrtidae), ZooKeys 378, pp. 49-81 : 60-61

Metaphycus cylindricus sp. n. Figs 50-56

Holotype.

China: ♀, Hunan, Chenzhou, 13.IV.2012. Coll. Y. Wang, J. Deng, H.B. Li (IZCAS).

Paratypes.

25 ♀♀, 3 ♂♂, same as holotype (IZCAS).

Female.

Body length, including ovipositor, 1 mm. Frontovertex yellow-brown; occiput largely dark brown; gena and face brown; dark brown on mouth margin below torulus; antenna (Fig. 50) with radicle brown; scape black, only extreme apex slightly yellow; pedicel with proximal half dorsally and laterally brown, remainder yellow; funicle with F1-F4 dark brown, F5-F6 pale yellow; clava dark brown, apical segment yellow; neck of pronotum black, remainder yellow, posterior margin more or less translucent pale yellow, lateral spots present and distinct; mesoscutum, axillae and scutellum brown; dorsum of thorax clothed in scattered, short, translucent setae; tegula proximally pale brown, apex brown; side and venter of mesosoma pale brown; legs brown-yellow (Figs 54-56); mid tibia with faintly brown mark (Fig. 55); fore wing hyaline (Fig. 53), venation pale yellow-brown; propodeum medially brown; gaster mainly brown; gonostylus pale orange.

Head with reticulate sculpture of mesh size the same as eye facet; ocelli forming an acute angle; frontovertex margins subparallel; antennal scrobes fairly deep, U-shaped and meeting dorsally; torulus separated from mouth margin by less than its own length; antenna with scape subcylindricusl, about 5 × as long as broad; funicle with F1-F4 subequal, F5 larger, F6 largest and subquadrate; apex of clava more or less rounded; mandible relatively broad with three, acute, subequal apical teeth; palpal formula 3-3; notaular lines present and reaching more than 0.5 × across mesoscutum (Fig. 51); fore wing venation and setation as in Fig. 53, gaster with ovipositor clearly exserted; ovipositor (Fig. 52) about 3.3 × as long as gonostylus.

Relative measurements: HW 18, FV 5, POL 3, AOL 3, OOL 1, OCL 2, POD 1, AOD 1, EL 13, EW, 8, MS 4, SL 10, SW 2, FWL 45, FWW 19; HWL 31, HWW 8, OL 20, GL 6, MT 15.

Male.

Length about 0.7 mm, almost identical to female but for genitalia, solid clava and all funicle segments pale brown.

Host.

Eriococcus lagerstroemiae Kuwana.

Material examined.

China: 35 ♀♀, 1 ♂, Beijing, Mentougou, 14.VIII.2012, Coll. X. Zhang, Q. S. Zhou; 3 ♀♀, 1 ♂, Shandong, Laizhou, 14.X.2012, Coll. F. Yu.

Distribution.

China (Beijing, Hunan, Shandong) (Fig. 85).

Etymology.

The new species name is derived from the cylindricusl shape of the scape.

Diagnosis.

Frontovertex yellow-brown; gena brown; scape black, extreme apex slightly yellow (Fig. 50); scape cylindricusl, about 5 × as long as broad; ovipositor (Fig. 52) about 3.3 × as long as gonostylus. Metaphycus cylindricus is similar to Metaphycus piceus in general coloration, antennal structure and ovipositor length. Metaphycus cylindricus can be separated from the latter as follows: ovipositor about 1.4 × as long as mid tibia, about 3.3 × as long as gonostylus (Fig. 52) (in piceus, ovipositor about 1.2 × as long as mid tibia, 4 –5× as long as gonostylus); mid tibia subbasally marked dark brown (in piceus, mid tibia yellowish); antenna with pedicel with basal half brown (in piceus, pedicel with basal 2/3 brown).