INSECTS AFFECTING PARK AND WOODLAND TREES 65 1 



Loose web nests witli considerahle brown excrement on the needles of terminal [line twigs 



contain true cateriiillars I'ine web worm, 15 e n t a m a 1 a n o g r a m m o s, p. 676 



A large, thick, pale green caterpillar, 3 to 4 inches long with pale orange head and legs 

 and 6 spined, yellow tubercles behind the head, occurs on white pine late in August 



and through September Imperial moth, Basilona imperialis, p. 677 



A grass green, yellow and white striped caterpillar feeds on pine in the middle of 



September Harris's pine hawk moth, L a p a r a b o m b y c o i d e s, p. 679 



A dull red caterpillar banded with brighter red with a light lateral line and reddish hairs 

 , in clusters, occurs on pine in late August and September 



White pine tufted caterpillar, 1' a n t h e a f u r c i 1 1 a, p. 679 

 A dull rusty brown, irregularly white-spotted, flattened caterpillar with series of grayish 

 tufts on each side harmonizes very closely with the bark 



Larch lajipet, T o 1 y p e 1 a r i c i s, p. 680 

 A small, cylindric larva mines the leaves of various pines 



Pine leaf miner, P a r a 1 e c h i a p i n i f o 1 i e 1 1 a, p. 681 

 Peculiar tubes of webbed-together pine needles occur in midsummer and September on 



white and probably other pines Pine tube builder, E u 1 i a p o 1 i t a n a, p. 681 



Short, stout beetles from }'3 to nearly J-2 inch long are numerous on hard pine foliage the 

 latter part of June and throughout July 



Light-loving grapevine beetle, A n o m a 1 a 1 u c i c o 1 a, p. 682 



A light brown beetle less than ji inch long is rather common on hard pine from the 



latter part of June till the last of August M e t a c h r o m a m a r g i n a 1 i s, p. 682 



Spruce, species affecting 

 Pale green, false caterpillars feed singly on spruce the latter part of the summer 



Spruce sawfly, Pteronus integer, p. 683 



A red-headed, brownish caterpillar about Sg inch long feeds on young, fresh spruce 



cones Spruce cone worm, D i o r y c t r i a r e n i c u 1 e 1 1 a, p. 684 



Balsam, gall fly affecting 

 A small midge produces an oval enlargement near the base of balsam needles 



Balsam gall midge, C e c i d o m y i a b a 1 s a m i c o 1 a, p. 685 



Sucking insects 



Pine, species affecting 

 A small, grayish and brown plant bug J ,6 inch long occurs on hard pine and other trees 



and shrubs False chinch bug, N y s i u s a n g u s t a t u s, p. 685 



A small, brown plant bug % inch long ' P h y t o c o r i s e x i m i u s, p. 685 



P i 1 o p h o r u s c r a s s i p e s, p. 686 



