Diptera.info :: Identification queries :: Diptera (adults)
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 Empididae : E.aemula/E.stercorea? => E.stercorea
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| sbushes |
Posted on 30-05-2021 23:33
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Member Location: Posts: 574 Joined: 29.04.21 |
Anyone able to help me determine if this is E.aemula or E.stercorea? I found the following : ----- Shamshek's Revision of Empis : E.aemula : Female: fore and often also hind tibiae with 1 or 2 small black bristles above. E.stercorea : Female: fore and hind tibiae with uniformly small hairs, without small dorsal bristles. ----- Mike Hackston's key (based on Collins), E.aemula : Female difficult to distinguish but usually larger and darker (7-9.5 mm.); dark pubescence on abdomen apparently more extensive; front and hind tibiae with 1-2 small but distinct bristles above; tarsi blacker. E.stercorea : "Female smaller (5.5-8mm.) with front and hind tibiae with no distinct bristles above." ------ Curious what these "distinct bristles above" look like and whether they are or are not visible on this one. Many thanks! Sam sbushes attached the following image:  [175.81Kb] Edited by sbushes on 17-12-2021 16:02 |
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| sbushes |
Posted on 30-05-2021 23:34
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Member Location: Posts: 574 Joined: 29.04.21 |
From above
sbushes attached the following image:  [153.27Kb] |
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| sbushes |
Posted on 30-05-2021 23:34
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Member Location: Posts: 574 Joined: 29.04.21 |
Fore tibia
sbushes attached the following image:  [181.24Kb] |
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| sbushes |
Posted on 30-05-2021 23:35
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Member Location: Posts: 574 Joined: 29.04.21 |
Abdomen
sbushes attached the following image:  [189.2Kb] |
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| sbushes |
Posted on 30-05-2021 23:35
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Member Location: Posts: 574 Joined: 29.04.21 |
Further images : https://www.inaturalist.org/observations/80668763 |
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| Paul Beuk |
Posted on 31-05-2021 07:13
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 Super Administrator Location: Netherlands Posts: 19226 Joined: 11.05.04 |
Empis stercoria. In my experience the fore tibiae are darker in aemula than in stercoria.
Paul - - - - Paul Beuk on https://diptera.info |
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| sbushes |
Posted on 31-05-2021 11:35
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Member Location: Posts: 574 Joined: 29.04.21 |
Good to know, many thanks Paul.  |
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but don't see the image in the post.