Euhexomyza simplicoides is a species of fly in the family Agromyzidae and forms woody galls on many species of willow.
Description
The woody gall is a spindle-shaped swelling tapering into the stem. It is about 2 cm long and at its widest 0.5 cm, but can be indistinct, with the stem barely swollen. Several galls may form around the stem. During the summer there is one white larva in a spherical chamber, which pupates and overwinters in the gall.[2] The puparium is yellowish, with bright reddish brown front segments.[3]
Recorded from United States, Austria, Belgium, Finland, France, Germany, Hungary, Italy, Kyrgyzstan, Lithuania, Netherlands, Poland, Spain and Switzerland.[3][4]
^ abHendel, F. (1920). "Die palaarktischen Agromyziden (Dipt.). (Prodromus einer Monographie)". Archiv für Naturgeschichte (A). (1918) 84 (7): 109–174, 1 pl.
^ abRedfern, Margaret; Shirley, Peter; Boxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: Field Study Council. pp. 282–299. ISBN978-185153-284-1.