Identification: Head: Eyes large in relation to head; Arista with white pubescence. Occiput & frons mostly black Thorax: Black, except humeri & scutellum. Scutellum with 3 pairs of bristles. Wings hyaline (not darkened) Legs: Femorae yellow with black rings near tip
Key: Bygebjerg, R., Munk, T., & Elnif, J. (2011). Chyliza leguminicola Melander, 1920 (Diptera: Psilidae) new to the Palaearctic fauna. Entomologiske Meddelelser, 79(2), 73–84.
The larvae develop within the viscous resin exudations around wounds of various conifers. In commercial plantations these wounds are usually associated with pruning or timber extraction. In Britain hosts include Sitka Spruce (Picea sitchensis), Norway Spruce (Picea abies), Lodgepole Pine (Pinus contorta) and Corsican Pine (Pinus nigra laricio). In the Scottish Pinewoods it is presumably associated with native Pine (Pinus sylvestris) although no rearing information is known
Resin containing C. annulipes larvae has a distinctive red brown or pinkish colour due to the presence of many frass scattered particles. Evidence of C. annulipes occurring in previous years can be found in the old resin nodules on trunks of Spruce trees. Those nodules that are a dirty yellow colour and with a honeycombed centre will sometimes contain empty puparia just below the surface. Adults recorded from April to June, often on broad-leaved foliage next to conifers.