Thread subject: Diptera.info :: unknown hydrellia
Posted by Mario Renden on 08-01-2025 17:40
#1
On 2nd January 2025 I took pictures of this hydrellia species in Den Helder, The Netherlands. Can someone please identify it? Thanks a lot. Greetings, Mario Renden
Posted by Mario Renden on 08-01-2025 17:45
#2
picture 2
Posted by Mario Renden on 08-01-2025 17:45
#3
picture 3
Posted by Mario Renden on 08-01-2025 17:46
#4
picture 4
Posted by Mario Renden on 08-01-2025 17:46
#5
picture 5
Posted by Mario Renden on 08-01-2025 17:46
#6
picture 6
Posted by Mario Renden on 08-01-2025 17:47
#7
picture 7
Posted by Mario Renden on 08-01-2025 17:47
#8
picture 8
Posted by Mario Renden on 08-01-2025 17:47
#9
picture 9
Posted by Tony Irwin on 09-01-2025 21:59
#10
Not all of the diagnostic characters are visible, but if we assume that this is probably a common species, it is most likely
H. albiceps (=
maura and
modesta). In this species, and the equally common
griseola, the mid-femur lacks a row of posteroventral bristles. However in
albiceps the notopleuron is at least partly brown, like the dorsum, whereas in
griseola it is evenly grey, contrasting with the dorsum.
Posted by Mario Renden on 09-01-2025 23:10
#11
Dear Tony and others,
I have added some pictures of a mid-femur to hopefully make identification species level possible for 100%. Thanks a lot.
Greetings,
Mario Renden
Posted by Mario Renden on 09-01-2025 23:11
#12
mid-femur
Posted by Mario Renden on 09-01-2025 23:11
#13
mid-femur
Edited by Mario Renden on 09-01-2025 23:12
Posted by Mario Renden on 09-01-2025 23:13
#14
mid-femur
Edited by Mario Renden on 09-01-2025 23:14
Posted by Tony Irwin on 10-01-2025 14:10
#15
Mario - assuming that is the left mid-femur, it's clear that the posteroventral row is absent, so I'm quite confident that is is
albiceps. (To be more confident, it would be best to see the genitalia of a male.)
Posted by Mario Renden on 10-01-2025 15:12
#16
Thanks Tony.:)