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Hey dipterists
I've got in a same sample 4 S. larvae
I wish to go ahead in the ID...
I know I have already, thanks to Atylotus, Oplodontha viridula

Here is a picture of the 4 larvae, respecting their dimensions
I guess that the biggest one (35 mm) will be Odontomyia
My question is "are the pattern of the cuticule something usefull to ID ?
As visible nr2 has a short white strip on the thoracic segments, the 4 th one a long white strip over all the segments



merci
SDS