Thread subject: Diptera.info :: Hyadina humeralis? > Hyadina guttata

Posted by maico on 11-05-2022 15:31
#1
I believe this to be a Hyadina sp. but I can't figure out the species.
Is anyone more familiar with Ephydridae willing to shine a light on this?

Wilshire UK, 2021.08.17
Suction sample
Edited by maico on 12-05-2022 12:24

Posted by maico on 11-05-2022 15:34
#2
photo2

Posted by maico on 11-05-2022 15:35
#3
photo3

Posted by maico on 11-05-2022 15:36
#4
photo4

Posted by maico on 11-05-2022 15:36
#5
photo5

Posted by Tony Irwin on 11-05-2022 23:36
#6
On balance I would say Hyadina guttata (should have clear patches either side of the posterior cross-vein, yellow palps, and two round dust-spots on the occiput)

Posted by maico on 12-05-2022 11:31
#7
Thanks, Tony.
I just had another look and I can indeed see two clear patches on both sides of the posterior cross-vein. I had misread the key and was expecting it to look differently!
Two round grey-dusted spots on the occiput too. I'll put this one down as Hyadina guttata.

Posted by nielsyese on 09-09-2022 19:11
#8
Does somebody know how valuable is the following feature, which is mentioned in Stuke (2010):

* face golden dusted... Hyadina guttata (Fallen, 1813)
* face silver dusted.. Hyadina humeralis auct., nec. Becker, 1896

Personally, I would say the face in these pictures is silver dusted (favouring humeralis), but that would contradict the clear patches (favouring guttata).