the perfect insect appearing later, but a few may be seen in the 
spring. Among the species that have been described the following 
is the most important. 
Pterophorus periscelidactylus, Fitch.—The Grape Vine Plume. 
This species, described by Dr. Fitch, in his first report, may some¬ 
times be seen injuring grape vines the latter part of May or the fore 
part of June. It occasionally appears in such numbers as to do 
serious injury to vines as may be seen from the report already referred 
to, and from an article in Prof. Riley’s first report on Missouri En¬ 
tomology. 
It is a very pale green caterpillar about half an inch long when full 
grown, with four elevated white spots and two still smaller dots on 
each segment, from which spring stiff white hairs of different lengths 
that stand in all directions. The worm draws together the edges of 
one or more leaves by means of silken threads, thus making a large 
roomy cavity, within which it stays, apparently in repose during the 
day time. The larva changes to a chrysalis the fore part of June, and 
the perfect insect emerges in about eight days after. The chrysalis is 
angular and cutoff slantingly and bluntly at the head, but the princi¬ 
pal characteristic is two sharp and angulated projections from the mid¬ 
dle of the back. Besides these it is ridged with the remnants of the 
tubercles of the caterpillar. 
The moth has an expanse of wings of a little more than three- 
fourths of an inch ; is of a tawny yellow color; the fore wings bifid, 
the cleft reaching almost to the middle, with two oblique white bands 
crossing both their forks; the space between these bands often rusty 
brown ; a transverse white spot at the commencement of the cleft, 
edged on its inner side with rusty brown ; two white spots inside of 
this, the first towards the outer, the second upon the inner margin. 
Hind wings trifid, the anterior cleft reaching their middle, the poster¬ 
ior one extending to the base, tawny yellow at base. There are prob¬ 
ably two broods in a season. 
Remedy .—The only remedy that seems applicable is hand picking. 
