Diptera.info :: Identification queries :: Diptera (adults)
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 Muscidae Helina annosa ?
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| DedeLab |
Posted on 20-11-2024 14:06
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Member Location: Canohès (France, Occitanie) Posts: 55 Joined: 16.11.24 |
Hello, Here is a fly encountered in the mid-mountains, resting on a rock. According to its wing venation and the 4 post-sutural dc setae, it should be a Muscidae. It could be a Thrichops, one of the mountain Muscidae. We cannot see a PD setae on tibia 3, but it could be broken or hidden among the other setae. What do you think please? Location: East of the Pyrenees (France), altitude 1600m, date: November 3, 2024, insect size: about 10 mm  ANDRE LABETAA : France : Montferrer : 66150 : 03/11/2024 Altitude : 1635 m - Taille : 10 mm environ ? Réf. : 351890  ANDRE LABETAA : France : Montferrer : 66150 : 03/11/2024 Altitude : 1635 m - Taille : 10 mm environ ? Réf. : 351891 Tibia 3 :  ANDRE LABETAA : France : Montferrer : 66150 : 03/11/2024 Altitude : 1635 m - Taille : 10 mm environ Réf. : 352199 Edited by DedeLab on 27-03-2025 20:24 André LABETAA |
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| DedeLab |
Posted on 25-11-2024 17:29
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Member Location: Canohès (France, Occitanie) Posts: 55 Joined: 16.11.24 |
Hello, a response to this post please?
André LABETAA |
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| Nikita Vikhrev |
Posted on 25-11-2024 17:51
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 Member Location: Moscow, Russia Posts: 9393 Joined: 24.05.05 |
I overlooked your thread. It is Helina evecta.
Nikita Vikhrev - Zool Museum of Moscow University |
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| DedeLab |
Posted on 25-11-2024 17:56
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Member Location: Canohès (France, Occitanie) Posts: 55 Joined: 16.11.24 |
Thank you very much Nikita ! We had discarded this species because we thought the transverse veins were not shaded enough. 
Edited by DedeLab on 25-11-2024 20:58 André LABETAA |
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| DedeLab |
Posted on 27-03-2025 18:19
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Member Location: Canohès (France, Occitanie) Posts: 55 Joined: 16.11.24 |
Hello, Couldn't it be Helina annosa instead? The ventral setae of femur 3 are present only on the apical third and are shorter than the width of the femur. Furthermore, it seems that there are more apical setae on tibia 3 than in Helina evecta? Edited by DedeLab on 27-03-2025 18:24 André LABETAA |
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| DedeLab |
Posted on 29-03-2025 10:03
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Member Location: Canohès (France, Occitanie) Posts: 55 Joined: 16.11.24 |
Hello, In addition to my previous message, the chaetotaxy of the legs seems to me to be consistent with what is expected for Helina annosa: - foretibia with a posterior setae: OK - middle tibia with 3 to 5 posterior setae: OK (at least 4) - hind femur with front setae on the apical half: OK - ♂ hind tibia with 6 to 10 front setae and 2 to 4 rear setae and a row of posterior setae: OK (at least 6 front, at least 2 rear, row of p) Edited by DedeLab on 29-03-2025 10:04 André LABETAA |
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