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Hi Sarah,

I didn't mean to sound authoritative because I certainly don't know everything about Opomyzidae. Escpecially on the biology my knowledge is very limited. However, since Opomyzidae is my passion in diptera I sometimes overdo it.
If you have any data on the behaviour of species of the family Opomyzidae, those data are very welcome. The same counts for pictures of members of this family.

Jan Willem