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Posted by Stephen on 19-01-2019 11:25

This fly was on wet dung, Punta Arenas, Chile. The date was 18 December 2018.

Scathophagidae? Scathopaha sp.?

Posted by Fred Fly on 19-01-2019 16:22

No dung fly (Scathophagidae) and no lesser dung fly (Sphaeroceridae). At least first of two frontorbitals seems to curve outside and lots of dorsocentral bristles present. I would suggest Heleomyzidae.
Regards
Fred

Edited by Fred Fly on 19-01-2019 16:33

Posted by John Carr on 19-01-2019 22:09

Scathophagidae are mostly arctic. Three species are known from high altitudes in South America.

Posted by Fred Fly on 20-01-2019 10:06

Nikita, the presence of extrem large orbitals are not corresponding with Helcomyzidae.

Posted by Nikita Vikhrev on 20-01-2019 12:56

Fred, we have fresh material from Chile in ZMUM. I specially asked collector to get flies from cow dung. So, next Wensday I'll check our material and come back to this thread.

Posted by Andrzej on 20-01-2019 23:03

It looks like members of the genus Prosopantrum

Posted by Ectemnius on 21-01-2019 12:23

Hi all,

If this would be from the Palaearctic I'd suggest Prosopantrum flavifrons. Certainly because Punta arenas is at the coast. Here in North-West Europe an alien species from the Neotropics.
If anyone knows if there is any literature on Neotropic Heleomyzidae/Prosopantrum… I'd like to have a key to and original descriptions of Neotropic Prosopantrum.

Kind regards,

Ectemnius

Posted by Andrzej on 21-01-2019 14:04

#10

It's not P. flavifrons. More species are described... See: Malloch. 1934. Acalyptrata (concluded), pp. 177-233. Diptera of Patagonia and South Chile, Part
VI, Fasc. 45.
pls see also: https://diptera.i...d_id=75133

Posted by Fred Fly on 21-01-2019 19:43

#11

I think it is Malloch (1933): Diptera of Patagonia and South Chile Part VI. Fascicle 4.- Acalyptrata (Heleomyzidae, Trypetidae, Sciomyzidae, Sapromyzidae, etc.): 177-389.
Prosopantrum covers page 199-208. 10 species included in a key and described.

Posted by Andrzej on 22-01-2019 00:01

#12

Andrzej wrote:
It's not P. flavifrons. More species are described... See: Malloch. 1934. Acalyptrata (concluded), pp. 177-233. Diptera of Patagonia and South Chile, Part
VI, Fasc. 45.
pls see also: https://diptera.i...d_id=75133

Ye! Sorry for mistake... I was in a hurry!
Anyway this work is obligatory for all of professionals dipterists!...

Andrzej

Edited by Andrzej on 22-01-2019 00:02

Posted by Stephen on 22-01-2019 21:02

#13

Thank-you gentlemen. How amazing to see a fly on dung in the woods in Chile and a few weeks later have its ID, collaborated on by experts from Poland, Germany, Russia, Massachusetts, and the Netherlands. Cheers!

Posted by Nikita Vikhrev on 23-01-2019 20:30

#14

It seems that my flies from Chile are a little bit different

Posted by Ectemnius on 24-01-2019 11:40

#15

Hello people,

@Nikita, nice Heleomyzidae!

Does anybody then have a .pdf of: Malloch (1933): Diptera of Patagonia and South Chile Part VI. Fascicle 4.- Acalyptrata (Heleomyzidae, Trypetidae, Sciomyzidae, Sapromyzidae, etc.): 177-389.? If so, could you send me a pm?

Kind regards,

Ectemnius

Posted by Nikita Vikhrev on 24-01-2019 13:04

#16

Unfortunaitely I have from Part VI. Fascicle 4 only Sciomyzidae chapter

Posted by Andrzej on 25-01-2019 02:05

#17

Sorry, but I have no pdf files to send the volume via internet ... :-(,

Posted by Andrzej on 25-01-2019 02:06

#18

Sorry, but I have no pdf files to send the volume via internet ... :-(,