Omphale obscura ( Foerster ) Hansson, Christer & Shevtsova, Ekaterina, 2012

Hansson, Christer & Shevtsova, Ekaterina, 2012, Revision of the European species of Omphale Haliday (Hymenoptera, Chalcidoidea, Eulophidae), ZooKeys 232, pp. 1-157 : 95-98

Omphale obscura ( Foerster) comb.n. Figures 369-383498529

Elachestus obscurus Förster, 1841:40. Lectotype female in NMW, examined.

Holcopelte obscura ( Förster), Förster (1856).

Derostenus obscurus ( Förster), Thomson (1878).

Holcopelte fulvipes Förster, 1861. Type not located. Synonymized by Bouček and Askew (1968).

Horismenus obscurus ( Förster), Schmiedeknecht (1909).

Holcopelte obscura ( Förster), Graham (1959).

Holcopelte obscura ( Förster), Bouček (1971).

Material.

Type material.Holotype female of Elachestus obscurus in NMW. Additional material. 69♀ 2♂: France 1♀ (BMNH), Hungary 5# (BMNH), Russia 7♀ 1♂ (BMNH, CH), Sweden 41♀ (BMNH, CH, LUZM, NHRS), United Kingdom 16♀ 1♂ (BMNH).

Diagnosis.

Frons and vertex smooth and shiny (Figs 378, 379, 382, 383); clypeus more or less triangular (Figs 378, 382); occipital margin with a sharp carina (Figs 379, 383); male scape with a sharp dent apicoventrally; midlobe of mesoscutum with a longitudinal groove in posteromedian ⅓ (Figs 376, 380); scutellum in some specimens with a weak median groove in anterior ¼ to complete (Fig. 376); dorsellum concave and sharply margined (Figs 376, 380); propodeum smooth with a wide and shallow groove along anterior margin, with a narrow median carina and laterally with a longitudinal carina close to spiracular sulcus (Fig. 376); petiole 0.7 × as long as wide with irregular sculpture, narrows off in anterior part.

Description.

Female. Length of body 0.9-1.8 mm. Antenna with scape yellowish white with dorsal part yellowish brown; pedicel brown with apex yellowish brown; flagellum brown; pedicel + flagellum 2.1 × as long as distance between eyes; first flagellomere 0.9 × as long and 1.3 × as wide as second flagellomere (Fig. 377); flagellomeres 1-4 with long setae in a basal whorl, with some setae reaching beyond apex of flagellomere attached to, and with short setae apical to whorl; clava 1-segmented. Face dark brown metallic, black metallic, or green metallic (Fig. 372), smooth to strigose (Fig. 378); clypeus with same colour as face, smooth to weakly strigose, triangular, 1.1 × as wide (width measured at mouth margin) as high; gena dark brown to black metallic; lower frons with same colour as face, smooth; interscrobal area smooth; antennal scrobes join on or just below frontal suture; frontal suture V-shaped; upper frons dark brown to black metallic with green tinges; vertex dark brown to black metallic with purple tinges, smooth (Fig. 379). Occipital margin with a sharp carina (Fig. 379).

Mesoscutum dark brown to black metallic (Fig. 370) with engraved reticulation (Fig. 376), midlobe with two pairs of setae; notauli as indistinct impressions in posterior ½, impressions smooth in some specimens, with a longitudinal groove in posteromedian ⅓. Scutellum dark brown to black metallic (Fig. 370) with engraved reticulation (Fig. 376), in some specimens with a weak median groove in anterior ¼-½; 1.2 × as long as wide, with anteromedian margin protruding forwards. Axillae dark brown to black metallic (Fig. 370). Dorsellum dark brown to black metallic (Fig. 370), tongue like (Fig. 376), concave and sharply margined, laterally with longitudinal carinae, 0.4 × as long as wide, and 0.3 × as long as length of median propodeum. Entire lateral mesosoma dark brown to black metallic (Fig. 369); transepimeral sulcus weakly curved forwards. Propodeum dark brown to black metallic (Fig. 370), smooth or with weak sculpture (Fig. 376), with a wide and shallow groove along anterior margin, with a narrow median carina, laterally with a longitudinal carina close to spiracular sulcus; propodeal callus with two setae. Legs yellowish white to yellowish brown (Fig. 369), forecoxa sometimes pale brown; midleg with first tarsomere 0.3 × as long as length of tarsus. Forewing transparent, veins yellow, setae dark brown (Fig. 374); speculum closed; admarginal setae 10-13, arising mainly from wing membrane; radial cell setose; postmarginal vein 0.6 × as long as stigmal vein; stigmal vein long and slender; marginal fringe with hairs as long as length of stigmal vein. Hind wing transparent, apex pointed (Fig. 374). Forewing WIP (Fig. 375) with apical ½ magenta, basal ½ with bands in blue, yellow and magenta.

Petiole yellowish brown, dorsal surface 0.7 × as long as wide with irregular sculpture. Gaster dark brown to black metallic, smooth, elongate and 1.0 –1.4× as long as length of mesosoma; 7th tergite 0.06 × as long as length of gaster.

Male. Length of body 1.2 mm. Features as in female except as follows. Antenna with scape dark yellowish brown with dorsal edge dark brown; pedicel and flagellum dark brown; pedicel + flagellum 1.9 × as long as distance between eyes; flagello-meres 1-4 with verticillate setae and with setae reaching beyond apex of flagellomere attached to (Fig. 381); clava 1-segmented. Face bright metallic green (Fig. 373), smooth with striae close to clypeus (Fig. 382); clypeus bright metallic green, weakly strigose, triangular to almost semicircular, 1.4 × as wide as high; gena black metallic; lower frons golden with green tinges; antennal scrobes join on frontal suture; upper frons golden, smooth; vertex golden.

Mesoscutum black metallic with golden tinges (Fig. 371). Scutellum black metallic with golden tinges (Fig. 371). Axillae black metallic with golden tinges (Fig. 371). Dorsellum black metallic (Fig. 371). Entire lateral mesosoma dark brown metallic (Fig. 369). Propodeum black metallic (Fig. 371). Foreleg with coxa dark brown, femur yellowish brown, tibia and tarsus yellow; midleg with coxa pale brown, femur, tibia and tarsus yellow; hind leg with coxa pale brown with base dark brown, femur yellowish brown, tibia and tarsus yellow. Forewing with veins pale brown; admarginal setae 10, arising mainly from wing membrane; postmarginal vein 0.8 × as long as stigmal vein.

Petiole dark brown, as long as wide, narrows off in anterior part. Gaster black metallic, smooth, 1.0 × as long as length of mesosoma. Phallobase and aedeagus as in Fig. 498.

Hosts.

Dasineura viciae ( Diptera : Cecidomyiidae ) ( De Stefani 1905); unidentified budgall on Galium mollugo ( Bouček and Askew 1968).

Distribution.

Austria ( Kirchner 1867), Czech Republic ( Bouček 1957), France (new record), Germany ( Förster 1841), Hungary ( Erdös 1956), Italy ( De Stefani 1905), Russia (new record), Sweden ( Thomson 1878), Switzerland ( Förster 1861), United Kingdom ( Graham 1959), Yugoslavia ( Bouček and Askew 1968).