Posted by von Tschirnhaus on 17-07-2021 10:58
#3
Indeed, it is Phytomyza aquilegiae and the small larva is an ectoparasitoid member of the Chalcidoidea (Hymenoptera). There are also endoparasitoid Chalcidoidea attacking this agromyzid species. The adults of those latter species emerge from the puparium after gnawing a hole in the puparium in which the pupa had developed.