ID JUSTIFICATION:
CCBER Key: 3 pairs of legs present, 1 pair of wings present with halteres (Order Diptera)
Pictorial Key to Dipteran Family: Suborder Brachycera, broad; short antennae, house flies and kin (Family Muscidae)
Using its left front leg and right middle leg for grooming because its right front leg is missing most of the tarsi
한상균, 벌레 이야기. 횡성 섬강변을 중심으로, 2018, p.108
Korean name 가로무늬꼿등애
here listed as Ischyrosyrphus laternarius (a synonum of Leucozona laternaria)