Hyposoter tricoloripes Viereck, 1911

Galsworthy, Anthony, Shaw, Mark R. & Haraldseide, Håkon, 2023, A key to European species of Hyposoter Förster, 1869 (Ichneumonidae: Campopleginae) with descriptions of 18 new species, and notes on all included species, Zootaxa 5290 (1), pp. 1-73 : 68

Hyposoter tricoloripes Viereck, 1911

Anilastus tricoloripes Viereck, 1911 : holotype ♀ in USNM, not examined.

Similar to H. tricolor , but easily distinguished by the colour of the hind tibia, as in the key. A well-known parasitoid of the Gypsy moth, Lymantria dispar (Linnaeus) ( Erebidae ; Lymantriinae ), for the control of which it was introduced to the USA. It has been recorded from much of central Europe westward to France. It had seemed possible that with the recent spread of the Gypsy moth back to the UK, this parasitoid might follow it. The first author has now taken two specimens in a Malaise trap in northwest Surrey in the UK, and the opportunity is here taken to record it for the first time from the UK: 2 females, Malaise trap, Queen Mary Reservoir, Surrey, TQ0569, 17.vi–9.vii.22 and 16–27.vii.22. We have otherwise seen specimens only from Germany.