412 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



cane-borer later in the season, and though blackberry shoots are 

 similarly affected they usually recover, but bear small gall-like 

 swellings like those shown in Fig. 348. This is the work of a 



FIG. 347. The raspberry cane-maggot (Phorbia rubivora Coquillet) : a, adult 

 female fly; much enlarged; 6, raspberry shoots girdled by the maggot, 

 natural size; c, egg much enlarged; d, tips of shoots each bearing an egg 

 in natural position in the leaf axils, natural size. (After Slingerland.) 



small white maggot, nearly related to and looking much the same 

 as the cabbage-maggot which girdles the inner bark of the stem. 



