@Oliver Schick I'd missed that. There is a good guide to Ichneumon wasps here https://www.nhm.ac.uk/content/dam/nhmwww/take-part/identify-nature/british-ichneumonid-wasps-id-guide.pdf obscuratus is on p40. The cream stripes on body seem do seem to be the characteristic feature of this species.
Having said that with many insects the only way to tell for sure what it is is to collect a sample and use a biological key.
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@Oliver Schick I'd missed that. There is a good guide to Ichneumon wasps here https://www.nhm.ac.uk/content/dam/nhmwww/take-part/identify-nature/british-ichneumonid-wasps-id-guide.pdf obscuratus is on p40. The cream stripes on body seem do seem to be the characteristic feature of this species.
Having said that with many insects the only way to tell for sure what it is is to collect a sample and use a biological key.