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View Thread :: Identification queries :: Diptera (eggs, larvae, pupae)
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Orthocladiinae genera ? >Brillia
solito de solis
#1 Print Post
Posted on 13-01-2018 16:21
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Location: Liege, Belgium
Posts: 378
Joined: 05.08.13

Hey dipterists
I'm facing this larvae with difficulties to determiate the genera
I guess this is a Orthocladiinae but I have no informations to go further more
Any help ?
merci beaucoup

Edited by solito de solis on 13-01-2018 21:30
Tony Irwin
#2 Print Post
Posted on 13-01-2018 20:02
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Location: Norwich, England
Posts: 5140
Joined: 19.11.04

With those antennal ratios, and the dark patch on the postmentum, I'd say this was Brillia modesta or close.
Tony Irwin
solito de solis
#3 Print Post
Posted on 13-01-2018 21:25
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Location: Liege, Belgium
Posts: 378
Joined: 05.08.13

Merci beaucoup. Great answer !

Brillia genera
DIAGNOSIS: Distinguished by the well developed pectinate labral lamellae; plumose S I; 4 segmented
antenna with segment 2 divided in basal third by a weakly sclerotized area; antennal blade subequal to
flagellum; distinctive mentum; posteriorly displaced setae submenti (near posterior margin of head capsule);
and procerci and anal tubules present.

As i did not have more info... I have been stopped. Brillia flavifrons impossible (different apotome and labral sclerites, different mentum)
Perhaps Brillia parva ?
in Belgium records of Brillia modesta (Meigen, 1830)
Nevertheless... Brillia is enough for my purpose.

Thanks a lot.
Edited by solito de solis on 13-01-2018 21:29
Tony Irwin
#4 Print Post
Posted on 14-01-2018 01:03
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Location: Norwich, England
Posts: 5140
Joined: 19.11.04

Apologies - I should have checked for name changes! Brillia modesta is now known as Brillia bifida. The species identification was based on Cranston's 1982 Key to the larvae of the British Orthocladiinae.
Tony Irwin
#5 Print Post
Posted on 14-01-2018 11:19
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Location: Amsterdam, NL
Posts: 833
Joined: 29.05.09

Apologies accepted Smile
Brillia names have several times been changed. Sometimes I got lost too. In the Netherlands there are 2 species of Brillia: Brillia bifida (syn. Brillia modesta) with a black gula spot and Brillia longifurca (syn. B. flavifrons). without a gula B. bifida for sure.
Edited by atylotus on 14-01-2018 11:20
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Date and time
18 January 2018 12:51


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