Contarinia jacobaeae Diptera: Cecidomyiidae - gall midge
Contarinia jacobaeae

Gall in Senecio erucifolius / Jacobaea erucifolia, Hoary ragwort

Hosts:
Jacobaea aquatica, erratica, erucifolia, paludosa, vulgaris;
Senecio sylvaticus, vernalis, viscosus, vulgaris


Base of flowerheads are swollen and +/- fleshy, sometimes also upper part of stems. Gregarious larva are yellowish-white or yellow with the ability to jump. Several generations, pupating in ground

Similar: Sphenella marginata. Dipteran larvae, pupating in gall


Contarinia jacobaeae

Contarinia jacobaeae

Contarinia jacobaeae
Contarinia jacobaeae
Badbury Rings, Dorset. September 2018

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