Sombrero-gall
Guides
Caryomyia arcuata
Hickory Sombrero Gall Midge
Caryomyia arcuata is a gall midge species in the family Cecidomyiidae, described by Gagné in 2008. It is known by the common name "Hickory Sombrero Gall Midge," referencing the distinctive gall structure it induces on hickory trees. As a member of the genus Caryomyia, this species is part of a group specialized in forming galls on Carya (hickory) species. The species has been documented through iNaturalist observations, indicating ongoing citizen science documentation of its occurrence.