Acroclisoides bimaculatus Tselikh, 2025

Tselikh, Ekaterina V., Mitroiu, Mircea-Dan, Lee, Jaehyeon, Dale-Skey, Natalie & Ku, Deok-Seo, 2025, Revision of Acroclisoides Girault & Dodd, 1915 (Chalcidoidea, Pteromalidae, Metasteninae), ZooKeys 1257, pp. 153-214 : 153-214

Acroclisoides bimaculatus Tselikh sp. nov.

Figs 17–24

Type material.

Holotype • female, Australia, “ AUS. C. T. Canberra Black Mtn. II. 1975 Z. Liepa ”, “ Ex eggs coll. 7 Feb. 1975 ”, “ NHMUK 013455911 ” ( NHMUK).

Diagnosis.

Acroclisoides bimaculatus Tselikh , sp. nov. belongs to a group of species where females have maculated fore wings, but this species can be easily distinguished from the others in having the fore wings with two spots (Fig. 21 ) and a broadly deeply concave lower margin of the clypeus (Fig. 20 ).

Description.

Female. Body length 2.10 mm; fore wing length 2.00 mm.

Coloration. Head and mesosoma dark green blue with diffuse coppery luster; antenna with scape yellow, pedicel dorsally brown, ventrally yellowish brown; anelli yellowish brown; F 1 – F 6 and clava brown. Fore and hind coxa dark green with diffuse coppery luster, mid coxae yellow, all femora, tibiae and tarsi yellow. Fore wing with two spots, venation brown. Metasoma dorsally dark brown with metallic blue-green and coppery luster; ovipositor sheaths brown.

Sculpture. Head and mesosoma reticulate; clypeus striate, but small middle part reticulate; scutellum and propodeum reticulate, nucha alutaceous; petiole smooth; metasoma smooth and shiny.

Head. In dorsal view 2.20 × as broad as long and 1.39 × as broad as mesoscutum; in frontal view 1.58 × as broad as high. POL 0.62 × as long as OOL. Eye height 1.14 × eye length and 2.16 × malar space. Distance between antennal toruli and lower margin of clypeus 2.00 × distance between antennal toruli and median ocellus. Antenna with scape 0.83 × as long as eye height and 0.94 × as long as eye length; pedicel 1.25 × as long as broad; combined length of pedicel and flagellum 0.85 × breadth of head; F 1 – F 6 longer than broad, F 1 1.58 × as long as broad and with two rows of sensilla; clava 2.46 × as long as broad, with small microsetose area on C 3 and C 4. Lower posterior corner of gena rounded. Lower margin of clypeus broadly deeply concave, in middle part weakly emarginate.

Mesosoma. 1.23 × as long as broad. Scutellum moderately arched, 0.75 × as long as broad, frenal area differentiated by a change in sculpture. Propodeum 0.67 × as long as scutellum, without costula and with median carina, nucha small. Fore wing 2.10 × as long as its maximum width; basal cell with 2–6 setae; basal vein setose; speculum closed below; M 0.72 × as long as PM and 1.13 × as long as S, stigma large.

Metasoma. 1.91 × as long as broad, 0.83 × as long as mesosoma, 0.56 × as long as mesosoma and head. Petiole 1.11 × as long as broad. Ovipositor sheaths projecting slightly beyond apex of metasoma.

Male. Unknown.

Etymology.

From the Latin bis and macula, referring to the two spots on fore wing of this species (adjective).

Biology.

Unknown.

Distribution.

Australia.

Figures

Figures 17–24. Acroclisoides bimaculatus Tselikh, sp. nov., female, holotype. 17. Habitus, lateral view; 18. Mesosoma and propodeum, dorsal view; 19. Antenna; 20. Head, frontal view; 21. Fore wing; 22. Head, lateral view; 23. Habitus, dorsal view; 24. Head and pronotum, dorsal view.