FOREST PROTECT. 



29 



INSECT FAMILIES ARRANGED ACCORDING TO FOOD OBJECTS 

 IN THE FOREST. 



COMPARE PAGE OP 

 ENT. BUL. No. 48 

 I. INFESTING THE CAMBIAL BARK. 



Bark Beetles Scolytidse (excepting Platypini, larvae and adults) ... 9 



Flat and round Buprestidse, CerambycidaB (mines often extending into 

 headed borers: wood prior to pupation) 10 



Bark weevils: CurculionidaB 10 



Powder post 



beetles: Ptinidee, (in peeled tan bark) 11 



II. INFESTING THE WOOD. 

 Ambrosia or 



timber beetles : Scolytidse (larva? and adults) 10 



Wood-boring 



caterpillars: Sesiidae 10 



True woodboring 



beetle-grubs: Lymexilonidse, BrenthidaB 10 



Bark and wood 



boring grubs: CurculionidaB, CerambycidaB, Buprestidse 10 



Carpenter worms: Cossidse 11 



Horn tails: SiricidaB 11 



Powder post 



beetles: Lyctidae, PtinidaB, BostrichidaB (dead wood only). . . 11 



III. INJURING LEAVES OR NEEDLES. 

 True Caterpillars 

 and measuring 



worms: Lepidoptera (practically all families of the order). . . 11 



False caterpillars TenthredinidaB 12 



Leaf beetles: Chrysomelidse 12 



Gall insects: Cynipidse, CecidomyiidaB, AphididaB 12 



Plant lice: Aphididce, PsyllidaB 12 



Scale insects: CoccidaB 12 



IV. INFESTING TWIGS. 

 Twig mining 



beetles: ScolytidaB, Buprestidse, CerambycidaB 12 



Twig weevils: CurculionidaB 13 



Twig caterpillars: TineidaB, TortricidaB 13 



Scale insects: CoccidaB 13 



Plant lice: AphididaB 13 



Gall insects: CecidomyiidaB and CynipidaB 13 



Cicadas: CicadidaB 13 



V. INFESTING YOUNG SEEDLINGS IN NURSERIES. 



Cutworms: NoctuidaB 



Junebugs: ScarabaBidaB 



