178 



A MANUAL OF DANGEROUS INSECTS. 



which are black. Two broods, frequently three. First brood occurs in May, second 

 about middle of June. (England.) Active during warmest part of day. Pu-pu 

 pale gray. Tupates in ground; period 9 to 12 days. Larva, green or grayish green, 

 with almost white sides; head usually pale dull orange brown. Larval stage of first 

 brood lasts 3 weeks; second brood overwinters in soil. Eggs are placed on under 

 surface of leaves. Incubation requires 8 days. (See text fig. 85.) 

 Distribution: England, Europe. 



Theobald, F. V. Insect Pests of Fruit, 1909, p. 372. 



Fig. 84.— The plum fruit sawfly {Hoplocampafulvkornis): Adult, larva, and injury. (Ent.Tidsk.) 

 B. OTHER IMPORTANT PLUM AND CHERRY INSECTS. 



HEMIPTERA. 

 Coccidae. 



Armored— 



Aspidiotus {Diaspidiotus) palavinus Berlese; Italy; Prunus ccrasus. 

 ^Diaspis psntagona Targioni-Tozzetti; Italy, Japan, Cape Colony; Prunus cerasus, P. pseudocerasus, 



P. armeniaca, P. laurocerasus. 

 Unarmored — 

 Kuwania parva Maskell; Japan; Prunus cerasus. 

 Lecanium cerasi Goethe; Germany, England; Prunus cerasus. 

 Lecanium cerasorumCockereill: Japan; Prunus cerasus. 



Leciniuin corijU Linnaeus; Europe; Prunus cerasus, P. armeniaca, P. avium, P.domestica,P.insititia, 

 P. laurocerasus, P. padus, P. spinosa. 



