5^._| NEW YORK STATE MUSEUM 



United States Department n( A.ijricultiire. The following is a brief abstract 

 of his detailed account : Winter eggs are deposited in rough jjlaces on 

 the stems of witch-hazel, from , the middle of June to earl\- in July and 

 remain unhatcheil till the following May or June, thus being dormant 

 almost I 2 months. The egg is quite flat, about '12; inch long and is covered 

 with a glistening, hairlike secretion harmonizing well with the twigs | tig. 

 177J. The recently hatched young are yellowish green and densely pubes- 



Fig. 179 11 ;i in .1 111 e I i s I e s s p i n o s u s, 3d 

 geiieralioii: rt = hiljeriiatinf; larva ; ^=anteiina; 

 f = rostrum or lieak ; rt'=iarsiis ; f=Iateral 

 tubercles and waxy rods, niucli enlarged 

 (After Pergaiide, U. S. Dep't A;.;ric. Div. 

 I\,nl. 'I'ech. Ser, g, im"i) 



c 



Fig. i8u H ;i III .1 m e I i s t e s s p i ii <> s u s, 

 3d gener.itiun; ^i=diirsal view -if adult 

 female ; i^^Ialeral view ; £=ventral 

 view; </'=aiiteiina ; t\ y, and g=legs, 

 much enlariied (.Mter Per^ande, V. 

 S. llep'l .-Varic. Div. F.nt. Tech. Ser. 



cent or hairy ami almost in\'ariably locate on the side of l)uds ne.vt the twig. 

 The irritation causeil b\- the insect checks the growth of the petiole and 

 hastens that of the Inid, specially on the side o])posite the insect, which 

 leiU'thens, broatlens, cur\'es over the gall maker and soon assumes a 

 beautiful rosy color. The plant louse is completely inclosed in a feu' da\'s, 

 onh" a transverse scar aiul small opening where the insect settled, remain- 

 ing. The gall is now ghibular and hardlv larger than the original bud. It 

 develops ra|)idl\' and b\' thi; middle of June is about half grown, chang- 



