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Photo#1615331
Agromyzidae, on Tall coreopsis, upper side of leaf

Agromyzidae, on Tall coreopsis, upper side of leaf
100 Acre Wood, Winneshiek County, Iowa, USA
October 1, 2018
Tall coreopsis, Corepsis tripteris, is native to southern Iowa and I collected seeds for a northeast Iowa prairie planting. It is not native to NE Iowa and has become prolific to say the least. Anytime I find insects eating this plant I am delighted. I've found leaf miners on it from at least 2014 but cannot rear them (yet) but I keep trying.

October 1, 2017: collected the mined leaf of Tall coreopsis
Unable to rear

Probably the same as this fly from central Iowa:

Images of this individual: tag all
Agromyzidae, on Tall coreopsis, upper side of leaf Agromyzidae, on Tall coreopsis, under side of leaf