Xorides propinquus (Tschek, 1869)

Varga, O. & Kostro-Ambroziak, A., 2023, New Records Of Poemeniinae And Xoridinae (Hymenoptera, Ichneumonidae) From Ukraine And Poland, With Corrections To The Ukrainian Checklist, Zoodiversity 57 (3), pp. 277-282 : 281

Xorides propinquus (Tschek, 1869)

M a t e r i a l. Non-type. Ukraine: Transcarpathian Reg., Vynogradiv, oak forest, 280 m, 48.1383 N, 23.0737 E, Malaise trap No. 1, 10.06– 02.07.2017, 1 ♀ , 1 Ơ; 02– 22.07.2017, 1 ♀; sweeping, 03.05.2018, 1 ♀; trunk trap, 26.07– 18.08.2018, 1 ♀ (O. Varga) (SIZK).

D i s t r i b u t i o n. Palaearctic; Ukraine: Crimea ( Kasparyan, 1981), Kyiv ( Varga, 2015 b) and Transcarpathian Regions.

Remark. After examination of the type specimen of Xorides corcyrensis (Kriechbaumer, 1894) ( figs 1–2, 4, 6 ), the first author found no morphological differences between this species and X. propinquus specimens collected in Ukraine, except for the narrow white ring on the antenna of X. propinquus . This mark is barely visible on the ventral side of the antennae in some of the females examined and is absent in the males, which calls into question the validity of X. corcyrensis . Furthermore, the type of X. fasciipennis (Kriechbaumer, 1894) (synonymised with X. annulator (Fabricius, 1804) by Horstmann, 2006) also shows similarities with the Ukrainian X. propinquus specimens, except for the red colouration of the metasoma, which can be variable in some Xorides spp. (see Johansson et al., 2022) and is common in other black-bodied ichneumonids found in dry and hot habitats, e. g. pimplines in southern Ukraine ( figs 3, 5, 7 ). Thus, we suspect that all three names may represent different colour forms of a single species, but at present we refrain from making any definitive conclusions until molecular support can be presented.

Figures

Figs 1–9. Xorides spp.: 1–2, 4, 6 — X. corcyrensis (holotype female); 3, 5, 7 — X. fasciipennis (holotype female); 1 — antenna; 2 — wings; 3 — antenna and wings; 4–5 — metasomal tergites 1–3 (dorsal view); 6–7— type labels; 8 — X. stepposus (dorsal view of female habitus); 9 — X. depressus (lateral view of male habitus).