Insects, etc., Injurious to the Plum. 



373 



from the slugworm attack, also, in that the damaged areas are 

 smaller and usually somewhat rounded in form. They become brown, 

 giving the leaves a spotted appearance which in the distance might 

 be taken to be some fungus work. As the larvse grow they become 

 more ravenous and eat out large holes in the leaves which shrivel 

 up, and the tree presents a scorched appearance (Figs. 245 and 246). 



[F. Edenden. 



FIG. 245. PLUM LEAF DAMAGE!) BY LARV.E OP THE 

 PLUM LEAF SAWFLY. 



LlFE-HlSTORY AND HABITS. 



The parent of these leaf-destroyers appears in May, sometimes 

 early in the month, at others even as late as June. The female 

 is black; the thorax shiny with scattered greyish down, and two 

 dull white spots. The abdomen is mainly black, with scattered 

 pale, very fine hairs. Legs white, except for the middle of the 

 femora, apex of tibiae and posterior tarsi which are black, but much 

 variation exists, sometimes the femora are all white, at others all 



