Thread subject: Diptera.info :: Parydra cf quadripunctata--->P. coarctata
Posted by Jogvan F on 07-11-2025 23:46
#1
This specimen and two others (total 2 males and a female) were collected in grass near a lake in Faroe Islands 15. august 2025.
If not for the apical process on scutellum it keys out to Parydra quadripunctata using Stuke, 2025. It does have the obvious seta on middle coxa. Knees are not yellow.
P. coarctata, P. fossarum and P. pusilla are reported from here. Also a dubious record of P. quadripunctata. Records for P. quadripunctata and P. coarctata are from 1881- 1915.
Any help is appreciated
Jógvan F
Edited by Jogvan F on 14-11-2025 02:36
Posted by Jogvan F on 07-11-2025 23:46
#2
.
Posted by Jogvan F on 07-11-2025 23:47
#3
head
Posted by Jogvan F on 07-11-2025 23:47
#4
Scutellum
Posted by Jogvan F on 07-11-2025 23:47
#5
Wing
Posted by Jogvan F on 07-11-2025 23:48
#6
Middle coxa with seta
Posted by Tony Irwin on 08-11-2025 20:48
#7
P. coarctata does have bristles on the outer face of the mid coxa, but these are usually pale and finer than the dark bristle seen in other related species. It's difficult to judge from your photo, but I would say this could be
coarctata. On the other hand, some
quadripunctata do have a small apical tubercle on the scutellum. If you want to be sure, take off the male genitalia, soak in KOH, and examine the internal characters.
Posted by Jogvan F on 10-11-2025 01:19
#8
Thanks for the reply Tony
I will check the genitalia asap and try to get better photos of that seta.
These Ephydridae are difficult.
Jógvan F
Posted by Jogvan F on 14-11-2025 02:36
#9
After checking the genitalia this specimen is obvious Parydra coarctata
Thanks again
Jógvan F