Ichneumon cessator Muller, 1776

Verheyde, Fons, De Ketelaere, Augustijn, Ørsnes, Geir, Pénigot, William, Storey, Malcolm, Österblad, Ika, Cameron, Al, Engan, Gunnar, Fiala, Miroslav, Lutz, Jonas, Parkhomenko, Maksym, Gokhman, Vladimir E, Dekoninck, Wouter, Cooleman, Stijn & Mees, Jan, 2025, First comprehensive catalogue of hibernating Darwin wasps in the Western Palaearctic (Hymenoptera, Ichneumonidae), Biodiversity Data Journal 13, pp. e 176441-e 176441 : e176441-

publication ID	https://doi.org/10.3897/BDJ.13.e176441
DOI	https://doi.org/10.5281/zenodo.18083223
persistent identifier	https://treatment.plazi.org/id/E2EB6DDF-770A-56B4-8F7A-EC800CF6D08B
treatment provided by	Biodiversity Data Journal by Pensoft
scientific name	Ichneumon cessator Muller, 1776
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Ichneumon cessator Muller, 1776 View in CoL

Notes

On pictures of lower quality, it could be confused with similarly-coloured species, for example, Hoplismenus terrificus or Thyrateles camelinus . Females of I. cessator can be recognised by their rather conical habitus (similar to H. terrificus ), some orange-red flagellomeres (not white) and especially the two small white spots at the apical segments of the metasoma.

Status: Confirmed.

Records: Belgium (1) *, Czechia (1) *, France (1), Germany (6), Russia (1), Sweden (1) *, Ukraine (1) *.

First record: 1915-1922 ( Seyrig (1923), France).

Hibernacula: DT (9), DTCL (15), M (2), S (1).

Sources: Seyrig (1923), Bauer (1984), Hilpert (1987 a); Unpublished: Pers. obs.

Also mentioned in: Bauer (1999), Rasnitsyn (1964).