Psilochalcis carinigena (Cameron, 1907)

Narendran, T. C. & van Achterberg, Cornelis, 2016, Revision of the family Chalcididae (Hymenoptera, Chalcidoidea) from Vietnam, with the description of 13 new species, ZooKeys 576, pp. 1-202 : 126-127

Taxon classification Animalia Hymenoptera Chalcididae

Psilochalcis carinigena (Cameron, 1907) Figs 183-184

Coelochalcis carinigena Cameron, 1907: 579 (lectotype (designated by Narendran 1989), India (BMNH) (examined)).

Psilochalcis carinigena ; Narendran 1987b: 438-439.

Chalcidiopsis odontomera Masi, 1933: 5 (♂, lectotype, Taiwan (SDEI) examined, designated by Bouček 1988); Narendran and Sudheer 2005: 89-98 (synonymy with Psilochalcis carinigena (Cameron)).

Invreia opisinae Narendran, 1985: 87 (♂, holotype, India (CNC), synonymised with Psilochalcis carinigena (Cameron) by Narendran 1989).

Material

(RMNH, IEBR). 3 ♂, "Vietnam: Ninh Thuân, Núi Chúa N. P., Northeast part, Malaise traps, 90-190 m, 19-25.iv.2007, Mai Phu Quy & Nguyen Tanh Manh, RMNH’07”; 1 ♀, "S. Vietnam: Dóng Nai, Cát Tiên N. P., Dong trail, Mal. traps, c. 100 m, 1-8.iv.2007, Mai Phu Quy & Nguyen Tanh Manh, RMNH’07”, 1 ♀, id., but Botanical Garden, 13-20.v.2007, C. v. Achterberg, R. de Vries & E. Gassó Miracle.

Diagnosis.

This species comes very near Psilochalcis keralensis Narendran in general colour, but Psilochalcis keralensis differs in having: 1) lateral part of fore coxa almost smooth with few weak incomplete rugae on lower part (in Psilochalcis carinigena lateral part of fore coxa with several distinct rugae); 2) malar ridge incomplete, not reaching eye (in Psilochalcis carinigena malar ridge complete, reaching ventral margin of eye); 3) apex of scutellum not emarginate (in Psilochalcis carinigena apex of scutellum at least slightly emarginate); 4) clava as long as preceding two segments combined (in Psilochalcis carinigena clava 1.3 × as long as preceding segments combined) and 5) T3 0.3 × as long as T2 in dorsal view (in Psilochalcis carinigena T3 0.5 × as long as T2).

Description.

♀, length of body 2.9-4.6 mm.

Colour. Black; femora and tibiae brownish red, hind tibia and tarsus brownish black; tegula pale brown or brown.

Head. Scrobe cross rugulose, not reaching anterior ocellus; scape 4 × as long as pedicel; apex of scutellum slightly to moderately incised or bi-lobed; propodeum horizontal basally, subvertical apically.

Legs. Hind coxa without a tooth on dorsal or ventral side; hind femur with a large basal tooth.

Metasoma. Metasoma without basal carinae; T1 shagreened on disc; head and body densely pubescent.

Male. Similar to female except in having stouter antenna with a dent on scape; reddish colour of hind femur and tibia more blackish; body more densely pubescent than that of female.

Variation.

In some Vietnamese specimens hind femur black or red with a black patch (Fig. 183); tibiae more blackish in some specimens.

Hosts.

Lepidoptera : Opisina arenosella Walker ( Oecophoridae ) and Hyblaea puera Cramer ( Hyblaeidae ) ( Narendran 1989).

Distribution.

India, China (Taiwan), Vietnam (new record).