Hyposoter orbator (Gravenhorst, 1829) Campoplex orbator Gravenhorst, 1829: lectotype ♀ in UWCP, designated by Horstmann (2000), examined by Horstmann. syn. Limneria rufa Bridgman, 1882 (Horstmann, 1972) The species is notable for its entirely red metasoma, without any black markings. The whole postpetiole is usually red, with only the petiole black. There is always a clear glymma. There is one modern rearing record, from Minucia lunaris ([Denis & Schifferm̧ller]) (Lepidoptera, Erebidae) in France (Shaw et al. 2016). A specimen from Belgium in Horstmann’s collection is mounted with a cocoon and marked simply ‘ex Lep’, but the larval head capsule attached to the cocoon has been identified by Dr. A. Giusti at the NHM as that of Malacosoma neustria Linnaeus (Lepidoptera, Lasiocampidae). There are nineteenth century records in the UK of rearing (as Limneria rufa) from Lasiocampa quercus, which are credible (eg. Bignell 1883). The lectotype is unlabelled, but probably from northern Italy (Horstmann 2000). We have seen specimens from the UK, France, and Belgium: the species has also been reported from Austria, Czechoslovakia, Germany, and Israel.

Published as part of 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, pp. 1-73 in Zootaxa 5290 (1) on page 57, DOI: 10.11646/zootaxa.5290.1.1, http://zenodo.org/record/7959256