Pnigalio gyamiensis Myartseva & Kurashev, 1990

Yegorenkova, Ekaterina & Yefremova, Zoya, 2012, The preimaginal stages of Pnigalio gyamiensis Myartseva & Kurashev, 1990 (Hymenoptera, Eulophidae), a parasitoid associated with Chrysoesthia sexguttella (Thunberg) (Lepidoptera, Gelechiidae), ZooKeys 214, pp. 75-89 : 76

Pnigalio gyamiensis Myartseva & Kurashev, 1990

Pnigalio gyamiensis Myartseva and Kurashev 1990: 42-43.

Morphology.

Our reared specimens were compared with type material (Zoological Institution of Russian Academy of Sciences, St. Petersburg, Russia (ZISP): "Holotype, female, Gami, 3 km W from Ashgabat, ex larva Chrysoesthia sexguttella on Atriplex sp., 13.10.1986 (Saparmamedova) Myartseva, Kurashev, 1990", two female paratypes with the same label, and one female with label "Gami, 3 km W from Ashgabat, ex larva Chrysoesthia sexguttella on Atriplex sp., 30.10.1986 (Saparmamedova) Myartseva, Kurashev, 1990".

Morphological diagnosis is based on a study of the type material.

Body length 1.08-1.80 mm; F1 1.1-1.3 times as long as F2; F2 1.1-1.2 times as long as F3; F3 1.0 times as short as F4; F4 1.3 times shorter than clava; callus of propodeum with 2 rows of setae: 1 row with 10-12 setae, 2 with 4 setae; sculpture of mesoscutum areolate and size of seta larger than that in scutellum. Forewing 2.3-3.5 times as long as broad; SMV 1.3-1.6 times shorter than MV; MV 1.8-2.7 times longer than PMV; PMV 2.0-3.3 longer than STV; gaster 1.5-1.8 times as long as broad. Body dark blue, the gaster brown with yellow tick at base, legs completely yellow with dark brown last segment of tarsi, hind coxae yellow with brown bracket (in the base of the coxa).

Seventeen females and eight males of Pnigalio gyamiensis reared by authors are labelled: "Ul'yanovsk, left bank of the river Volga, Verhnaya Terrasa, 56°49'N; 49°44'E, 15 June– 8 August 2009 (Yegorenkova)".

Our species belongs to Pnigalio gyamiensis and its morphological variability is less high.

Female.

Body length 1.35-1.80 mm; F1 1.2-1.3 times as long as F2; F2 1.1 times as long as F3; F3 1.0-1.1 times as short as F4; F4 1.3-1.4 times shorter than clava; forewing 2.5-2.8 times as long as broad; SMV 1.5-1.6 times shorter than MV; MV 1.7-1.8 times longer than PMV; PMV 2.7-2.8 longer than STV; gaster 1.4-1.5 times as long as broad. Body dark green with metallic tint, gaster with yellow tick or spot in the base of the gaster, legs completely yellow with dark brown last segment of tarsi, hind coxae mostly yellow without brown bracket. Male (first description): body length 1.25-1.38 mm; thorax 1.6 times as long as broad; pronotum 1.7 times as broad as long; sculpture of scutellum is the same as that of the mesoscutum; propodeum 2.3 times as broad as long; gaster 1.7-1.8 times as long as broad. Colouring is the same as in the female, sometimes hind femur and fourth tarsal segments darkened.

Distribution.

Turkmenistan (Myartseva, Kurashev, 1990), Italy ( Gebiola et al. 2012b). New record for Middle Volga Basin (Russia).

Biology.

Larval solitary ectoparasitoid.