Sonchus asper, het Twiske
cephalic skeleton, rear end
front and rear spiraculum
Lapsana communis, Nieuwendam: abdomen, dorsal
front spiraculum dorsal, rear spiraculum, lateral
The larva is described by de Meijere (1943a). The genus Ophiomyia belongs to the subfamily Agromyzinae, as is appararent from the cephalic skeleton, with three rear arms. The front spiraculum is broad, finger-shaped and bent, with about 7 papillae. The rear spiraculum is indistinctly bifid, with a total of 10-12 papillae. Mandibles strongly alternating, with two teeth, the anterior one much larger than the basal one.