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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






SDS

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With those antennal ratios, and the dark patch on the postmentum, I'd say this was Brillia modesta or close.

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@TOny
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.
SDS

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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.

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Apologies accepted
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 spot....so B. bifida for sure.

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Merci Atylotus
SDS