Hexomyza simplicoides (Hendel, 1920)
on Salix
Salix spec., Germany, Saarland, Bexbach © Volker Fäßler
opened gall
larva

Salix cinerea, Belgium, prov. Hainaut, Hensies © Jean-Yves Baugnée
gall
Spindle-shaped swelling of a young branch, gradually narrowing at both ends, not unfrequently several in a row. The larva is distinguished from those of Rabdophaga species (Cecidomyiidae) by having a black of dark brown cephalic skeleton (more easily visible when the larva is seen from the side). The puparium is yellowish but the anterior segments are bright reddish brown and conspicuously sloping ventrally (Spencer, 1976a).
host plants
Salicaceae, monophagous
Salix aurita, caprea, cinerea & subsp. oleifolia, pedicellata, repens.
S. caprea is considered the main host plant.
synonyms
Melanagromyza simplicoides.
references
Beuk (2002a), Buhr (1955a, 1965a), Černý (2012a), Černy & Merz (2007a), Dauphin & Aniotsbehere (1997a), Dursun, Civelek, Barták, Kubík, Yildirim & Černý (2015a), Kabos (1971a), Lambinon, Carbonnelle & Claerebout (2015a), de Meijere (1924a, 1939a), Papp & Černý (2015a), Redfern & Shirley (2011a), Roskam (2009a), Skuhravá & Roques (2000a), Spencer (1954a, 1957f, 1966c, 1972a, 1976a), Spooner & Bowdrey (2012a), von Tschirnhaus (1999a).