Eriothrix prolixa at Hartslock

I always like to go along to moth-trapping events and keep a good lookout for unusual tachinids that have been flushed out and drawn into the lights. During the BBOWT mothathon on the 14th August I noticed a small tachinid-like fly that behaved like an Eriothrix rufomaculata but just didn’t look like this very common species because it was smaller and didn’t have any red abdomenal side patches. Back home and under the microscope it was clearly something unusual and it quickly keyed out to be Eriothrix prolixa, a quite usual tachinid.

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