Jewelled-spider-fly
Guides
Eulonchus marginatus
jewelled spider fly
Eulonchus marginatus is a species of small-headed fly in the family Acroceridae, commonly known as a jewelled spider fly. The species has a Nearctic distribution and is known to visit flowers from over ten different plant families. Like other members of the genus, adults exhibit metallic coloration and serve as pollinators, while larvae are parasitoids of spiders.