PACKAUD.] 



THE HOP-VINE CATERPILLAR. 



773 



when possible, to turn a powerful stream of water upon the leaves, or 

 to shower them with soap-suds. So abundant is it in certain years in 

 Kew Eglaud tbat the hop-crop has 

 almost been cut off. Tbe following- 

 figure of the apple aphis is intro- 

 duced to illustrate the usual form of 

 tbe plant-louse. 



The Hop Caterpillar, Hypena liunudi 

 (Harris).— De\'ouring the leaves in June, 

 anil again in July or August ; active, slen- 

 der, glass-greeu caterpillars, with but four 

 false legs and nearly half an inch long. 



The following account of this de- Fig. 42.— Apple Aphis, natural size and 



structive caterpillar is taken from my enlarged. 



"Guide to tbe Study of Insects." Late in May or in June, as soon as 

 the leaves expand, they are often devoured by the caterpillar of a grunt- 

 moth, which, on being disturbed is very active, wriggling off the leaf to 

 the ground. It is double-brooded, the first lot of caterpillars appearing 

 late In May and early in June, the moths flying about late in June and 

 early in Jiily. A second brood of caterpillars appear in July and August, 

 in Massachusetts, the moth flying in September. When the caterpillar 



is fully grown it forms a loose >, ,, > ^ ^^^ f$^^S^^^ 



silken cocoon within a folded ' " ' --«* 



leaf or any crevice, the moth ap- 

 pearing three weeks after. I 

 have raised a species of parasitic , . H 



fly (Trtc/tmft) from the chrysali- *^:<?v i' -^t^v V 



des, which l^robably somewhat Fig. 43.— Hop-vine caterpillar, pupa, and moth, 

 reduce thenumberof the moths. natural size. 



i^mefZies.— Hand-picking and shaking the vines vigorously twice a day 

 would, if systematically pursued, be sufficient; while, in addition, show- 

 ering the leaves with whale-oil soap, or a similar wash, would be eflft- 

 cacious. 



Description of the caterpiUer.—Bodj long and slender, with the segments rather con- 

 vex, and with long, sparse hairs. It is uniformly of a glassy, pea-green color. The 

 head is rather large, and deeply divided into two lobes by the median suture ; it is a, 

 little more yellowish-green than tbe body, which tapers gradually toward the tail, 

 while the last pair of legs arc long and slender. As there are but two pairs ot abdom- 

 inal legs, the caterpillar walks with a looping gait like the span or measuring worms. 

 The body is striped with a narrow whitish line, edged broadly below with dusky, and 

 with two white lines on the sides of the body, though specimens vary in the number of 

 lines, some having no lateral whitish stripes. It is nearly half an inch (0.45) mlength. 

 When half-grown the caterpillar is of a pale, livid, flesh color, not greenish, with a 

 broad, dark, dorsal line, bounded on each side by a whitish line. 



Description of the moth.— It has remarkably long feelers (palpi), and when the wings 

 are folded is triangular in outlike like the Greek letter A. It is marbled with gray 

 beyond the middle of tbe fore wings, with a distinct oblique gray stripe at the apex ; 

 and the fore wings are crossed bv two wavy blackish lines formed of elevated black 

 tufts, while there are two similar black tuits in the middle of the wings; the hind 

 wings are paler than the rest of the moth. It expands one inch and a quarter. 



The Hop-Vine Haih-Streak Butterfly, Uranotcs melinus {Tinhn.) ; Tliecht humnU 

 Harris.— Frequently feeding on the heads of the hop ; a small, short, thick, green and 

 downy caterpillar with very short legs, transforming into a small, delicate, brown but- 

 terfly with four linear tails, two on each hind wini^-. 



As I have never seen this caterpillar, my account is taken from that 

 of Harris. All he says of the larva is given in the preceding paragraph. 



Description of the h utter fy.— The wings on the upper side are dusky brown, with a 

 tint of blue-gray ; and, in the males, there is an oval darker spot near the front edge; 



