The seaweed fly Fucellia thinobia swarms visitors as they arrive at Alcatraz and the Farallon Islands. This species is thriving in cormorant colonies and their guano-rich habitats. Yet not a single voucher specimen has ever been officially documented in California’s collections! My project will survey for this species, deposit voucher specimens at the UC Davis Bohart Museum of Entomology, and sequence tissue samples to create the first genetic record.