Invertebrates

See our handy guide to critters found in local homes and our Central Coast Butterfly FAQ. Browse the insects and other terrestrial arthropods we’ve identified. Check out local marine invertebrates, particularly bivalve mollusks and intertidal organisms.

Small fly?

Hello!

Can you tell what this is that is sitting on the blue-eyed grass?

Thanks!

Kevin, Santa Barbara - April 6, 2026

Curator Response

Hi Kevin,

This is a Margined Calligrapher, Toxomerus marginatus, a common species of hover fly. The adults are pollinators, while the larvae feed on thrips, aphids, and other small insects. A great species to have in your backyard!

Sincerely,

Schlinger Chair of Entomology Alex Harman, Ph.D.

All Questions