BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
133 
1127. Riley, C. V.— Continued. • 
The pickle-worm... 67 
Characteristics and description of the worm, 67—Its habits, 67— 
Characteristics of the moth, 68—Accounts of injury done by the 
worm in Missouri and Illinois, 69 ; in other portions of the coun¬ 
try, 70—It was not known before as injurious, 70—Remedy, 70. 
Insects injurious to the ^rape-vine . 71 
The hog-caterpillar of the vine, Avipelophaga myron . 71 
The egg, 71—Characteristics of the larva, 71—Its habits when 
about to transform, 72—The chrysalis and imago, 72—It is one- 
brooded North and two-brooded farther South, 72—It is very in¬ 
jurious, 73—The Microgaster parasite and its development, 73— 
Habits of caterpillar infested with the parasite, 73. 
The achemon Sphinx, Philampelus achemon .. 74 
Appearance and habits of the larva, 74—The chrysalis, 75—The 
insect is single-brooded, 75—The moth and its issuing from the 
pupa-shell, 75—No parasites known, 76. 
The satellite Sphinx, Ph ilampelus pandorus . 76 
How to distinguish its larva from that of the foregoing species, 76 
—Development of the larva, 76—Variations in color of the larva, 
77—Its position when at rest, 77—The moth, 78. 
The Abbot Sphinx, Thyreus abbotii . 78 
Its distribution, 78—The larva varies much in color, 78—The chrys¬ 
alis and imago, 79. 
The blue caterpillars of the vine... 79 
The eight-spotted forester, Alypia octomaculata, 80—Larva pre¬ 
viously mistaken for it, 80—Habits and characteristics of the 
larva, 80—Harris’s description of the larva, 81—The moth, 81— 
Mr. Andrews’s account of its ravages, 81—Remedies, 82. 
The beautiful wood nymph, Eudryas grata, 83—Characteristics of 
the moth, 83—Close resemblance between the larva of this and 
the foregoing species, 83—The differences pointed out, 83—De¬ 
velopment of the insect, 83. 
The pearl wood nymph, Eudryas unio, 83—It greatly resembles the 
beautiful wood nymph, 83—Its probable larva, 84—Practical im¬ 
portance of distinguishing these closely allied species, 84. 
The American Procris, Harrisina americana . 85 
Work of its larva, 85—Description of full-grown larva, 86—The 
moth, 86—It is not very destructive, 86—Two annual broods of 
the insects, 86—Parasite of the American Procris, 87. 
The new grape-root borer, Prionus laticollis . 87 
Correction of opinion formerly expressed, 87. 
The broad-necked Prionus, 87—Duration of the larva state, 87— 
Its transformation, 88—It bores also in apple roots, 88—Great 
damage done by the borer, 88—No good remedy known, 88. 
The tile-horned Prionus, Prionus imbricornis, 89—How it differs 
from the foregoing, 89—Its occurrence on prairie land, 90—Small • 
dimorphous male form, 90—The larva subsists also upon the 
roots of herbaceous plants, 90—Practical considerations, 91. 
The grape-seed maggot, Isosoma vitis . 92 
The grape-seed Curculio larva of the first report is that of a hymen- 
opterous insect, 92—The perfect insect is closely allied to the 
joint-worm fly, 92—Mr. Saunders’ account and description of the 
imago, 93. 
