Brodiaea
Guides
Eulonchus tristis
small-headed fly
Eulonchus tristis is a small-headed fly (family Acroceridae) native to western North America. Adults are known flower visitors, particularly of Brodiaea elegans and Iris douglasiana in California, where they carry substantial pollen loads. The species has been documented as a potential pollinator, especially for B. elegans. Like other acrocerids, larvae are parasitoids of spiders.