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Category: Tutorials

Tachinids that look like Eriothrix rufomaculata

by ChrisRPosted onAugust 18, 2019August 1, 2020

Eriothrix rufomaculata is an incredibly common fly in mid-summer, especially on any flowery meadows. The species is very easy to identify from the red abdominal…

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A quick guide to the new UK phasiines

by ChrisRPosted onAugust 17, 2019August 1, 2020

This year we have been lucky enough to receive records for 2 new species to the UK – Ectophasia crassipennis & Phasia aurigera. These both…

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How to split Tachina fera type tachinids in photos

by ChrisRPosted onAugust 17, 2019August 1, 2020

One of the most difficult problems is how to confirm/verify the identification of photos of flies that look quite like Tachina fera. I’d include in…

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Dexiosoma caninum vs Dexia vacua

by ChrisRPosted onAugust 6, 2019August 1, 2020

I always find that one of the hardest identifications to make from photos is the split between Dexiosoma caninum and the much rarer Dexia vacua.…

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The problem with Phryxe …

by ChrisRPosted onJanuary 20, 2015August 1, 2020

The genus Phryxe contains a few common species (nemea, vulgaris & heraclei) and a few very rare ones (magnicornis & erythrostoma). The key pulls out…

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Gonia face colour

by ChrisRPosted onJanuary 20, 2015August 1, 2020

In the keys to Gonia one of the couplets asks you to consider the shininess of the face but this can be a confusing thing…

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Linnaemya picta, tessellans & rossica confusion features

by ChrisRPosted onNovember 27, 2014August 1, 2020

For many years Linnaemya picta had been confused with rossica because early workers (e.g. Fonseca) hadn’t tried using the European keys. Since the ‘discovery’ of picta…

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Exorista rustica vs. tubulosa

by ChrisRPosted onMarch 22, 2013August 1, 2020

I always find this species-pair really difficult to split – even when you flip out the male genitalia. The cerci are actually quite distinctive but…

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How to find the prosternum

by ChrisRPosted onJune 16, 2012August 1, 2020

The prosternum can be quite a difficult feature to find on a tachinid – partly because many British workers, used to Belshaw’s key will never…

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Distinguishing species of Thelaira

by ChrisRPosted onJune 16, 2012August 1, 2020

In my experience a lot of people have trouble with this genus because the traditional features used in keys are quite variable. In particular it…

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