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Diptera.info :: Identification queries :: Diptera (adults)
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Zygomyia semifusca ?
Bruno48
#1 Print Post
Posted on 12-02-2025 21:20
Member

Location: France
Posts: 48
Joined: 04.11.20

 Hi

I wonder if this Mycetophilidae may be Zygomyia semifusca. It is quite little (2,5mm).
Thank you for help.

www.galerie-insecte.org/galerie/image/dos354/big/Zygomyia_semifusca_Malaise_PtColasP5_fev252.jpg
Bruno RIGHETTI : France : Bédouès-Cocurès : 48400 : 04/02/2025
Altitude : 607 m - Taille : 2,5 mm
Réf. : 354323

www.galerie-insecte.org/galerie/image/dos354/big/Zygomyia_semifusca_aile_Malaise_PtColasP5_fev252(1).jpg
Bruno RIGHETTI : France : Bédouès-Cocurès : 48400 : 04/02/2025
Altitude : 607 m - Taille : 2,5 mm
Réf. : 354325


www.galerie-insecte.org/galerie/image/dos354/big/Zygomyia_semifusca_thoraxVl_Malaise_PtColasP5_fev252.jpg
Bruno RIGHETTI : France : Bédouès-Cocurès : 48400 : 04/02/2025
Altitude : 607 m - Taille : 2,5 mm
Réf. : 354326
 
Walther Gritsch
#2 Print Post
Posted on 15-02-2025 19:26
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Location: Copenhagen
Posts: 290
Joined: 31.01.09

 No, it isn't Zygomyia, but Mycetophila sp. Zygomyia lacks the cubital fork. I'm not familiar with the French fauna so I won't hazard a guess as to the species.
Walther
 
Bruno48
#3 Print Post
Posted on 16-02-2025 11:29
Member

Location: France
Posts: 48
Joined: 04.11.20

 Thank you Walther. Z. semifusca is the only Zygomyia with a posterior fork, but this fork is much shorter than median fork. P. chandler indicate "less than half lenght of median fork. That is the reason why I Tthought it is Z. semifusca.
 
Bruno48
#4 Print Post
Posted on 16-02-2025 12:05
Member

Location: France
Posts: 48
Joined: 04.11.20

 Is the shape of anepimeron discriminant between the two genus ? If it is, this one is Mycetophila indeed !
 
Walther Gritsch
#5 Print Post
Posted on 16-02-2025 22:54
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Location: Copenhagen
Posts: 290
Joined: 31.01.09

 Well, I've never seen Z. semifusca, but the upper branch of the posterior fork is supposed to be very weakly developed, which doesn't seem to be the case here. The shape of anepimeron and/or anepisternum is similar in the two genera.
Have a look at the semifusca wing here https://sciaroidea.myspecies.info/taxonomy/44966
Walther
 
Bruno48
#6 Print Post
Posted on 18-02-2025 13:22
Member

Location: France
Posts: 48
Joined: 04.11.20

 OK thank you Walther !
 
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Mycetophilidae => Mycetophila/Zygomyia sp. Diptera (adults) 3 05-11-2020 12:20
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