Diptera.info :: Identification queries :: Diptera (adults)
Who is here? 1 guest(s)
Thailand Muscidae ID -> Hydrotaea chalcogaster
|
|
smol |
Posted on 09-09-2024 09:21
|
Member Location: Posts: 338 Joined: 06.07.22 |
23 Jul 2024, Thailand (Koh Samui) Observation: https://observation.org/observation/327574968/ Edited by smol on 09-09-2024 22:48 |
|
|
John Carr |
Posted on 09-09-2024 11:46
|
Member Location: Massachusetts, USA Posts: 10130 Joined: 22.10.10 |
Muscidae. Hydrotaea capensis? |
smol |
Posted on 09-09-2024 12:29
|
Member Location: Posts: 338 Joined: 06.07.22 |
John Carr wrote: Muscidae. Hydrotaea capensis? Thank you very much! |
|
|
Nikita Vikhrev |
Posted on 09-09-2024 15:17
|
Member Location: Moscow, Russia Posts: 9308 Joined: 24.05.05 |
John, I agree that it is Hydrotaea (Ophyra). But I don't think it is capensis. It seems to me that eyes are not emarginated on hind margin. Most probable H. chalcogaster.
Nikita Vikhrev attached the following image: [77.62Kb] Nikita Vikhrev - Zool Museum of Moscow University |
|
|
John Carr |
Posted on 09-09-2024 15:27
|
Member Location: Massachusetts, USA Posts: 10130 Joined: 22.10.10 |
Nikita Vikhrev wrote: John, I agree that it is Hydrotaea (Ophyra). But I don't think it is capensis. It seems to me that eyes are not emarginated on hind margin. Most probable H. chalcogaster. Is there a modern review of this group? I checked Sabrosky (1949). He says the male of O. chalcogaster has partially yellow fore tarsi and the female has partially yellow arista. |
Nikita Vikhrev |
Posted on 09-09-2024 17:14
|
Member Location: Moscow, Russia Posts: 9308 Joined: 24.05.05 |
I use Fauna of India, Emden 1965. Yes, absence of emargination against invisible orange on arista. 1. I suppose emargination more reliable. 2. In female yellowish arista is not easy visible, especially on photo. 3. I personally spent a lot of time in Thailand. H. capensis isn't reported for Thailand. Especially on southern Koh Samui. In S thailand only H. spinigera and H. chalcogaster are present. Nikita Vikhrev - Zool Museum of Moscow University |
|
|
smol |
Posted on 09-09-2024 20:37
|
Member Location: Posts: 338 Joined: 06.07.22 |
Thank you very much John and Nikita! For what it is worth, a zoomed in picture of the head based on the raw file: Interestingly enough, I can see the yellowish arista basally and only dorsally. I have checked multiple dorsal pictures, and they all show this basal yellowish (towards orange) color. Though, the sun reflection still makes it very hard. |
|
|
Nikita Vikhrev |
Posted on 09-09-2024 21:58
|
Member Location: Moscow, Russia Posts: 9308 Joined: 24.05.05 |
Well, as you know I'm expert. My decision is H. (chalcogaster with very small "?"
Nikita Vikhrev - Zool Museum of Moscow University |
|
|
smol |
Posted on 09-09-2024 22:48
|
Member Location: Posts: 338 Joined: 06.07.22 |
Nikita Vikhrev wrote: Well, as you know I'm expert. My decision is H. (chalcogaster with very small "?" Much appreciated! Very happy with this name Edited by smol on 09-09-2024 22:49 |
|
Jump to Forum: |