Chyliza extenuata
Identification: Eyes large in relation to head; Arista with dense black pubescence. Occiput & frons mostly black Thorax: Black. Wings darkened and folded on to the abdomen 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.
Distribution
Europe: Countries (published), online at Fauna Europaea, Occurrences at GBIF
UK: Recording Scheme map of occurrences 2016 (verified.) Online (NBN Atlas) via Easy maps or Interactive Atlas
Larvae develop in the stem bases of the Broomrapes Orobanche elatior and O. rapum-genistae (Chandler 1975) and affected stems can be recognised easily as the base is markedly swollen at ground level, apparently due to gall formation induced by the presence of the larvae. Puparia may be found in spring and summer in the bases of the previous year’s dead stems. The Pembrokeshire records were in association with the Ivy Broomrape Orobanche hederae on coastal dunes.