Omphale salicis Haliday

Hansson, Christer & Shevtsova, Ekaterina, 2012, Revision of the European species of Omphale Haliday (Hymenoptera, Chalcidoidea, Eulophidae), ZooKeys 232, pp. 1-157 : 35-39

Omphale salicis Haliday Figures 11108-122484509

Omphale salicis Haliday, 1833:339. Lectotype female in NMID, not examined.

Eulophus subulatus Nees, 1834:167. Type not located. Synonymized by Thomson (1878:268).

Eulophus terebrator Förster, 1841:42. Type not located. Synonymized by Bouček and Askew (1968:135).

Omphale salicis Haliday ( Graham 1963).

Omphale salicis Haliday ( Hansson 1996b).

Material.

Type material. We have been unable to examine any material from the museum in NMID and we base our interpretation of Omphale salicis on the information in Graham (1963) where the lectotype for Omphale salicis was designated. Additional material. 269♀ 70♂: Austria 1♀ (RMNH), Czech Republic 1♀ 2♂ (BMNH, RMNH), France 3♀ 5♂ (RMNH), Germany 1♀ 2♂ (RMNH), Greece 1♀ (LUZM), Hungary 2♀ (BMNH, RMNH), Ireland 5♀ 3♂ (BMNH), Italy 3♀ (RMNH), Norway 2♀ (LUZM), Portugal 1♀ (RMNH), Russia 22♀ 1♂ (CH, LUZM), Sweden 100♀ 23♂ (BMNH, CH, LUZM, RMNH), Switzerland 1♀ (RMNH), United Kingdom 126♀ 34♂ (BMNH, CH).

Diagnosis.

Female 7th gastral tergite 1.4 –4.5× (average= 2.6, n= 109) as long as its basal width; coxae in both sexes predominantly dark and metallic (Fig. 108); female forewing with 6-14 (average= 8, n= 109) admarginal setae, male with 6-12 admarginal setae; female flagellomeres 1-4 ventrally with two sets of long setae, one attached subbasally and one attached medially or subapically (Fig. 116), male flagellomeres 1-4 each with a basal whorl of setae and with scattered setae apical to whorl (Fig. 120). Similar to Omphale chryseis but with all coxae dark and metallic, and female on average with a longer 7th gastral tergite. These species can also be separated through their WIP in forewings: Omphale salicis has a narrow straight yellow line from stigmal vein to hind margin of wing separating an apical blue and a basal magenta area (Fig. 114), Omphale chryseis has apical ½ yellow and basal ½ with wide bands in magenta, blue and yellow (Fig. 84). Also similar to Omphale theana but with more admarginal setae in forewing, female flagellomeres 1-4 ventrally with two sets of long setae, coxae predominantly dark and metallic, mesosoma predominantly dark and metallic, scutellum very occasionally with sides brownish; forewing WIPs different: Omphale salicis with apical and basal halves with different colours (Fig. 114), Omphale theana with one colour (Fig. 129).

Description.

Female. Length of body 1.4-3.1 mm. Antenna with scape brown with dorsal margin dark brown; pedicel and flagellum dark brown; pedicel + flagellum 2.0 × as long as distance between eyes; first flagellomere 1.1 × as long and 1.0 × as wide as second flagellomere (Fig. 116); flagellomeres 1-4 ventrally with two sets of long setae, one attached subbasally and one attached medially or subapically; clava 2-segmented. Face golden green to bluish green metallic (Fig. 111), strigose-reticulate (Fig. 117); clypeus golden green, smooth, semicircular, 1.6 × as wide as high; gena golden green with or without red metallic tinges; lower frons including interscrobal area golden green, green or bluish green metallic, with strong reticulation; antennal scrobes join frontal suture separately; frontal suture V-shaped; upper frons golden, with very weak reticulation; vertex golden red with green tinges, with very weak reticulation (Fig. 118). Occipital margin rounded (Fig. 118).

Mesoscutum golden green, green or bluish green metallic (Fig. 109), occasionally golden red, with engraved reticulation (Fig. 115), midlobe with 1-2 pairs of setae; notauli as indistinct impressions in posterior ½. Scutellum golden green, green or bluish green metallic (Fig. 109), occasionally golden red, very rarely with lateral parts brown with metallic tinges, with engraved and weak reticulation (Fig. 115), 1.2 × as long as wide, with anterior margin smoothly curved forward. Axillae golden green or green metallic (Fig. 109). Dorsellum golden green (Fig. 109), convex and smooth (Fig. 115), 0.3 × as long as wide, and 0.9 × as long as length of median propodeum. Entire lateral mesosoma golden green, green or bluish green metallic (Fig. 108); transepimeral sulcus curved forwards. Propodeum golden green, green or bluish green metallic (Fig. 109), smooth (Fig. 115); propodeal callus with two setae. Coxae green or bluish green metallic (Fig. 108), midcoxa sometimes paler; femora dark brown; tibiae yellowish brown; foretarsus dark brown, mid- and hind tarsi with segments 1-3 yellowish brown and 4 dark brown; midleg with first tarsal segment 0.4 × as long as tarsus. Forewing transpar ent, veins yellowish brown, setae dark brown (Fig. 113); speculum closed; admarginal setae 6-14, arising from marginal vein; radial cell bare and long, 3.2 × as long as length of postmarginal vein; postmarginal vein 0.8 × as long as stigmal vein. Hind wing tran-sparent, apex pointed (Fig. 113). Forewing WIP (Fig. 114) with apical ½ blue and basal ½ magenta, separated by a straight and narrow yellow line.

Petiole dark brown. Gaster with tergites 1-6 golden green to bluish green metallic with posterior ½ dark brown metallic, shiny, smooth, elongate and 2.5 –2.7× as long as length of mesosoma; 7th tergite 0.2 × as long as length of gaster.

Male. Length of body 1.0-1.7 mm. Features as in female except as follows. Antenna with scape dark brown metallic with basal part yellowish white; pedicel + flagellum 3.4 × as long as distance between eyes; flagellomeres 1-4 with verticillate setae and with setae apical to basal whorl (Fig. 120); clava 1-segmented. Face golden red or bluish green metallic (Fig. 112); clypeus golden green, bluish green metallic, 1.5 × as wide as high; gena golden red, green metallic; lower frons golden red with green metallic tinges, bluish green metallic, with weak reticulation (Fig. 121), interscrobal area smooth; upper frons golden red; vertex golden red, smooth (Fig. 122).

Mesoscutum golden red (Fig. 110), bluish green metallic, with engraved reticulation (Fig. 119), midlobe with one pair of setae (posterior pair). Scutellum golden red (Fig. 110), golden green, or bluish green metallic; 1.3 × as long as wide. Axillae golden red (Fig. 110). Dorsellum golden, 0.5 × as long as wide, and 0.7 × as long as length of median propodeum. Entire lateral mesosoma golden green with red metallic tinges. Propodeum golden red with lateral parts golden green (Fig. 110). Coxae golden green or bluish green metallic, midcoxa sometimes paler; femora dark brown to pale brown; midleg with first tarsal segment 0.3 × as long as tarsus. Forewing admarginal setae 6-12; postmarginal vein 0.9 × as long as stigmal vein.

Petiole dark brown. Gaster with first tergite golden green in anterior ½, posterior ½ and remaining tergites dark brown with purple metallic tinges, 0.9-1.1 × as long as length of mesosoma. Phallobase and aedeagus as in Fig. 484.

Hosts.

Contarinia lentis ( Diptera : Cecidomyiidae ) (probable record) ( Szelényi 1944), Contarinia loti ( Gijswijt 1976); Contarinia vincetoxici (new record).

Distribution.

Austria ( Kirchner 1867), Czech Republic ( Bouček and Askew 1968), France (De Gaulle 1908), Germany ( Nees 1834), Greece (new record), Hungary ( Szelényi 1944), Ireland (new record), Italy (new record), Netherlands ( Bouček and Askew 1968), Norway (new record), Portugal (new record), Russia (St. Petersburg area) (new record), Sweden ( Thomson 1878), Switzerland (new record), United Kingdom ( Haliday 1833), Yugoslavia ( Bouček and Askew 1968); Canada ( Hansson 1996b) (Fig. 509).