Four-speckled Hover Fly .Dioprosopa. Pseudodoros clavatus.
"This syrphid is now well established on Oahu (Makiki, and HDOA King street) reared from larvae on Tridax and Murraya infested with aphids. HDOA release was only on Oahu Island with no record of establishment since 1953. Maui specimen should be a new island record.
