Acroclisoides spilopterus ( Masi, 1917 ), 1974

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 spilopterus ( Masi, 1917)

Figs 152–159

Pachycreptis spilopterus Masi, 1917: 185–186. Lectotype female ( NHMUK, examined).

Type material examined.

Lectotype • female, Seychelles, “ Mahe , ' 08-9. Seychelles Exp. ”, “ Percy Sladen Trust Exped. B. M. 1913-170. ”, “ Pachycrepis spilopterus ♀ Masi ”, “ LECTOTYPE ”, “ B. M. TYPE HYM. 5.858 ”, “ NHMUK 010370216 ” ( NHMUK) . Paralectotype • 1 female, Seychelles, “ Mahe , 08-9. Seychelles Exp. ”, “ Percy Sladen Trust Exped. B. M. 1913-170. ”, “ Pachycrepis spilopterus ♂ Masi ”, “ PARALECTOTYPE ”, “ NHMUK 013456027 ”, “ Acroclisoides spilopterus (Masi) Det. Z. Bouček, 1974 ” ( NHMUK) .

Description.

Female. Body length 1.50–1.90 mm; fore wing length 1.25–1.50 mm.

Coloration. Head and mesosoma dorsally dark blue with diffuse metallic violet and green luster, head frontally blue green with metallic diffuse coppery luster, antenna with scape and pedicel yellowish brown, anelli, F 1 – F 6 and clava brown. All coxa yellowish brown, all femora, tibiae and tarsi yellow. Fore wing with one spot near S, venation brown. Propodeum dorsally dark blue with diffuse metallic coppery and green luster. Metasoma dorsally dark brown with metallic blue and violet luster; ovipositor sheaths brown.

Sculpture. Head, mesosoma and clypeus reticulate; scutellum and frenal area finely reticulate, propodeum reticulate, nucha alutaceous; petiole smooth; metasoma smooth and shiny.

Head. Head in dorsal view 1.90–2.20 × as broad as long and 1.46–1.55 × as broad as mesoscutum; in frontal view 1.46–1.57 × as broad as high. POL 0.61–0.72 × as long as OOL. Eye height 1.07–1.13 × eye length and 2.10–2.28 × malar space. Distance between antennal toruli and lower margin of clypeus 2.44–2.57 × distance between antennal toruli and median ocellus. Antenna with scape 1.00–1.10 × as long as eye height and 1.00–1.06 × as long as eye length; pedicel 1.45–1.57 × as long as broad; combined length of pedicel and flagellum 1.11–1.15 × breadth of head; F 1 – F 6 longer than broad, F 1 2.00–2.25 × as long as broad and with 2 rows of sensilla; clava 2.50–2.60 × as long as broad, with small microsetose area on C 3 and C 4. Lower posterior corner of gena rounded. Lower margin of clypeus concave bilaterally, in middle broadly emarginate.

Mesosoma. Mesosoma 1.37–1.45 × as long as broad. Scutellum moderately arched, 0.78–0.80 × as long as broad, frenal area not clearly differentiated by a change in sculpture. Propodeum 0.66–0.86 × as long as scutellum, without costula but with median carina, nucha not small. Fore wing 2.00–2.25 × as long as its maximum width; basal cell and basal vein setose; speculum closed below; M 0.57–0.70 × as long as PM and 0.90–1.10 × as long as S, stigma large.

Metasoma. Metasoma 1.78–1.92 × as long as broad, 1.15–1.27 × as long as mesosoma, 0.80–0.93 × as long as mesosoma and head. Petiole 0.67–0.70 × as long as broad. Ovipositor sheaths projecting slightly beyond apex of metasoma.

Male. Unknown. Previously discovered males have been re-identified as females.

Biology.

Unknown.

Distribution.

Seychelles ( Masi 1917).

Comments.

Acroclisoides spilopterus (Masi) belongs to a group of species where females have a fore wing with one spot near S. This species is similar to A. supramaculatus Tselikh , sp. nov. and A. miklukhai Tselikh , sp. nov.; the differences between these species are given in the key.

Figures

Figures 152–159. Acroclisoides spilopterus (Masi, 1917), female, paralectotype. 152. Habitus, lateral view; 153. Mesosoma and propodeum, dorsal view; 154. Antenna; 155. Head, frontal view; 156. Fore wing; 157. Head, lateral view; 158. Habitus, dorsal view; 159. Head and pronotum, dorsal view.