Kidney shaped enlargements at base of needles of P. edulis, length 7 mm, diameter 4 mm, the walls thick and the needles rudimentary. [for sketch of gall, see p. 18]

Needle fascicle swollen and misshapen, needles not developed beyond swelling ... Contarinia cockerelli (Felt) and Janetiella sp.

C. cockerelli. This species is known from a single female, reportedly reared from galls such as those illustrated in figure 353. Such galls normally contain a species of Janetiella...Host: P. edulis...