45 



In his second report on the insects of New York (1850) Dr. Asa Fitch 

 gave a somewhat lengthy account of the species upon pages .'523-327 of 

 the special edition. The larva of Hypena he considers to be the most 

 universal and formidable of the hop insects, making its appearance 

 suddenly, and sometimes in a few days completely riddling and destroy- 

 ing the leaves of whole fields. He says the worms begin to appear on 

 the leaves as early as the fore part of June, when the vines are rapidly 

 climbing the poles, and secrete themselves in the denser foliage near 

 the ground. He rather doubted the distinctness of the species from 

 the European form, and published a rather poor figure of the adult at 

 figure 1 of Plate I. 



In his account of the insects affecting the hop vine in the annual 

 report of the Entomological Society of Ontario for 1872, the Rev. 

 0. J. S. Bethune, upon pages 30-31, gives a brief history of the species, 

 illustrated by figures of the larva, pupa, and adult. The life history 

 coincides with that given by Harris, and the author further states that 

 the insect is frequently excessively destructive. In 1869 he observed 

 two hopyards in the county of Peel which were almost ruined by it. 



In a little pamplet entitled Hop Culture, published by the Orange 

 Judd Company in 1891, written by the late A. S. Fuller, this insect 

 is briefly treated upon page 5, and figures, copied from Bethune, of 

 the larva, pupa, and moth are given. 



GEOGRAPHICAL DISTRIBUTION. 



This species is recorded in Smith's Catalogue from Canada, northern 

 and central United States, south to Alabama, west to Washington, 

 Colorado in September and October; British Columbia, May to July, 

 September and October; Delaware in August, and Kansas in April. 

 Specimens occur in the ^National Museum collection from Schenectady, 

 N. Y.; Washington, D. 6.; Iowa; St. Louis, Mo.; Bayou Sara, La., and 

 Columbus, Tex. No other food plant than hop is known, and the insect 

 therefore follows in this country the distribution of Hamulus. In the 

 tenth report of the State entomologist of Illinois it is reported by Mr. 

 D. W. Coquillett as feeding upon hop in that State and as flying in 

 August and September. 



HABITS AND LIFE HISTORY. 



The habits and life history of the insect as first published by Harris 

 are substantially correct. He states that the caterpillars are false 

 loopers, bending up the back a little when they creep tor the reason 

 that the first pair of prologs is lacking. The body rings are rather 

 prominent, and they are of a green color, with two longitudinal white 

 lines down the back, a dark-green line in the middle between, and an 

 indistinct whitish line on each side of the body. The head is green, 

 spotted with black pililerous dots. There are similar piliferous dots 

 arranged in two transverse rows on each segment. When disturbed, 



