Thread subject: Diptera.info :: Eriothrix to ID

Posted by Rui Andrade on 28-07-2018 09:33
#1

Hi, I'm not sure about the identification of this tachinid. Wing cell r4+5 seems to be open.

location: Bragança, Portugal
date: 25/07/2018

Posted by Rui Andrade on 28-07-2018 09:33
#2

Arista

Posted by Rui Andrade on 28-07-2018 09:34
#3

Occiput

Posted by Rui Andrade on 28-07-2018 09:34
#4

Humeral callus

Posted by Rui Andrade on 28-07-2018 09:35
#5

Wing

Posted by Rui Andrade on 28-07-2018 09:35
#6

Mid-dorsal depression of syntergite 1+2

Posted by Zeegers on 30-07-2018 20:24
#7

Yes, well spotted.
It is a female, which is pretty awkward.
It keys out to E. micronyx, which is an extremely rare species.
Did you collect it ?
From what altitiude is the record ?


Thanks

Theo

Posted by Rui Andrade on 30-07-2018 22:48
#8

Thanks, Theo. The specimen was collected and the altitude is 1054 m.

Posted by Zeegers on 31-07-2018 15:39
#9

Nice. If you want to be sure, you are welcome to send the specimen over.
You know my address (or send me a PM)


Thanks


Theo

Posted by Rui Andrade on 31-07-2018 23:16
#10

Thank you, Theo. I'll keep the specimen for you.

Posted by Zeegers on 20-08-2018 09:38
#11

So, this proved to be interesting.

As already observed, there are too many black hairs on occiput for apenninus.
That said, there are too few in comparison with my only micronyx in collection. Moreover, the greyish dusting on tergites is too prominent for micronyx.

On the humeri, on one side there are 5 bristles, on the other side 4. This explains the confusion: clearly this must be an aberration. We are dealing wit a female of Eriothrix argyreatus with only 4 humeral bristles on one side .

So: Eriothrix argyreatus .

Thanks for sending the specimen, in these aberrant cases one really needs to have the specimen at hand to see what is going on !


Theo

Posted by Rui Andrade on 20-08-2018 13:01
#12

Thank you Theo for the identification and explanation! I'm really happy to have found an interesting Eriothrix. :)