Symphoricarpos albus, Amsterdam
front and rear spiraculum
mandibles and frontal appendage
Contrary to Ch. periclymeni the rear spiraculum is drawn out like a spine (see also de Meijere, 1926a, 1937a, 1949a, Hering, 1951b, and Griffiths, 1974a). Larva and puparium are described already in detail by Trägårdh (1909a, as Phytomyza xylostei).