Thread subject: Diptera.info :: Anthomyiidae? Ecuador

Posted by Isidro on 15-10-2023 08:34
#1

Yambo, Ecuador

i.ibb.co/KrzLvVg/P1530788-2-10-23-Yambo.jpg
i.ibb.co/f1WjCkC/P1530787-2-10-23-Yambo.jpg

Posted by John Carr on 15-10-2023 13:38
#2

Muscidae or Anthomyiidae.

Posted by Isidro on 15-10-2023 15:44
#3

Thanks John, species not possible to ID?

Posted by John Carr on 15-10-2023 19:02
#4

A species ID would need a brighter, sharp picture and a lot of luck.

Posted by Nikita Vikhrev on 15-10-2023 21:45
#5

It seems to me that in 2nd photo there are rows of about 20 pv setae on t3.
If so, it is Delia platura.

Posted by Isidro on 15-10-2023 21:51
#6

Wow Nikita!!! You're amazing!!!! Zillion thanks! Smile

Really, an introduced anthropic exotic species makes sense in the place where I've photographed it Smile

Edited by Isidro on 15-10-2023 21:52

Posted by John Carr on 16-10-2023 00:24
#7

There are several presumably native species in South America closely related to Delia platyura. As of 1993 only one was described: D. sanctijacobi.

According to the key by Gomes et al. (2022) (http://dx.doi.org....80.e82831) the eyes of D. platyura and D. sanctijacobi are closer togther ("frontal vitta usually obliterated at narrowest point of frons"Wink.

Posted by Isidro on 16-10-2023 06:52
#8

Then is probably Delia sp, but not platura?
Thanks!

Posted by Nikita Vikhrev on 16-10-2023 08:25
#9

1. Not Delia sp., but species of D. platura group.
2. I'm not very convinced by Gomes et al. (2022) publication. Authors divided D. sanctijacobi from D. florilega by COI sequence. In the morphological key they have not even compare D. sanctijacobi with D. florilega. Thus, D. sanctijacobi is a species described by COI sequence only, without any morphological confirmation.
3. I cannot see any trace of a brush of long dorsal setae on the first tarsomere of mid leg (the main diagnostic character for D. sanctijacobi and D. florilega).

Posted by Isidro on 16-10-2023 10:01
#10

Thanks a lot, very useful Nikita! I deeply disagree in taxonomy based on genetics only - it's completely unreliable. I would not considere valid none species described by sequences only.

Posted by John Carr on 16-10-2023 12:29
#11

Griffiths compared morphology of all three species in his revision of Nearctic Delia.