Thread subject: Diptera.info :: Psilidae > Chamaepsila strigata
Posted by Raimo on 07-07-2022 18:44
SW Sweden July 3.
Edited by Raimo on 23-09-2022 17:50
Posted by Raimo on 07-07-2022 18:45
Posted by RamiP on 07-07-2022 19:24
Chamaepsila humeralis/pectoralis, I think.
Regards another Raimo;)
Posted by Raimo on 07-07-2022 20:08
Thanks Raimo. Rami was what I was called as a toddler.
Posted by Jocelyn Claude on 21-09-2022 16:18
Hi, I don't think it is Cha. humeralis or pectoralis: The mesopleuron is not black, which directly excludes humeralis; In case of yellow-dominant mesopleuron (as here), there is no black triangle on the katepisternum, so that also excludes pectoralis, which must have one. On the other hand this individual has the upper margin of mesopleuron black, forming a black line beginning narrowly on the upper margin, but widening behind until it meets the dark postnotum below the scutellum. Pleurae largely yellow. Postpronotal lobe at least partly yellow. We are thus dealing here with a Chamaepsila strigata (Collin, 1959). You didn't keep the specimen?
Posted by Jan Willem on 22-09-2022 12:57
Which key are you using? My key is missing Chamaepsila strigata and doesn't have some of the details you mention for C. pectoralis.
Posted by Jocelyn Claude on 22-09-2022 14:09
Hello Jan, I have used several keys but you can simply use Paul Beuk's key: http://www.online-keys.net/infusions/keys/keys_print.php?key_no=34#c23
I have been working in depth for a few years on the Psilidae, including the Chamaepsila, the most problematic genus. I base my work mainly on the examination of genitalia, which allows me to make a good identification and to select the right external criteria to identify the species. An article on the Western European Chamaepsila is forthcoming, including descriptions of 3 new species and many illustrations of the terminalia. It's good to see your specimens in natura, it's a change from mine alcohol!
All the best !
Posted by Jan Willem on 22-09-2022 20:03
Thank you for your feedback Jocelyn! Most of my specimens are also in alcohol. :)
Looking forward to the forthcoming publication!
Edited by Jan Willem on 27-09-2022 14:31
Posted by Raimo on 23-09-2022 17:49
Thankyou Jocelyn. This species have not been recorded in Sweden so this is a first. Perhaps not so surprising given this difficult genus. I did not collect it.
Edited by Raimo on 23-09-2022 18:10
Posted by Jocelyn Claude on 27-09-2022 12:37
Its range (https://micropezids.myspecies.info/taxonomy/term/122) is still unknown. We have it in France, so it is not surprising that it is in Sweden! Nice, you have to publish now ;)