﻿TABLE OF CONTENTS. 



Preface he 



NOXIOUS INSECTS. 



Currant and Gooseberry Worms 1 



There are several Species having different Habits, 1— Three whic]i may be desti'oyed by 

 similar Methods, 1 — Botanical Details as to the Currants and Gooseberries, 2. 



The Gooseberry Span-worm 3: 



Its Natural Historj% 3— Most destructive Gooseberry Insect in Missouri, 3— Generic No- 

 menclature, 3— Characters of the Moth, 4 — Description of the Egg, 4 — Where the 

 Eggs are Laid, 4 — The Insect single-brooded, 5— How It spreads, 5— A native Spe- 

 cies, 5— Its past History, 5— It prefers the Gooseberry to the Currant, (>— The Moth 

 is closely imitated by one which greatly differs structurally, 6— Parasites, 6— Reme- 

 dies, 7 — Other Currant Span-worms, 7. 



The Imported Currant Worm 7' 



Belongs to the ' ' False-caterpillars, ' ' 7— The different specific Names it has received, 7— 

 An unported Species, 8— Its Introduction and Spread, 8— Independently imported 

 at several Eastern Points, 9 — ^Its Natural History, 9 — How the Eggs are laid, 10 — 

 Nature and Habits of the Worm, II— Characters of the Parent Flies, 12 — Preventive 

 Measures, 13— Remedies, 13— White Hellebore the best, 13— How best used, 14,15— 

 The Worm is not poisonous, 16 — Natural Enemies, 17— It furnishes a forcible Exam- 

 ple of Arrenotoky or the power of producing Male Offspring without Impregnation, 

 18— Results of Parthenogenesis in different Insects, 18— It also furnishes an interest- 

 ing Instance of Defunctionation of special Parts , 19— The Saw of the Female imper- 

 fect, compared to others, 20— Evolutionary Bearings of this Fact, 21— Descriptive, 

 21 — Variation in the AntennsB and Wing Veins, 22. 



The Native Currant Worm 23 



Wherein it differs from the Imported Species, 23— Its Habits, 24— Where the Eggs are 

 laid, 25— How the Winter is passed, 25 — Its Ocurrence in Missouri, 26— Remedies, 

 26 — Descriptive, 26. 



The Strawberry "Worm 27 



Also a False-caterpiUar, 27— It has a wide Range, 27 — How the Eggs are deposited, 28 — 

 Characters and Habits of the Worm, 28— Remedies, 28— Descriptive, 28. 



Abbot's White Pine Worm 2^ 



Destructive Power of the Insects of Its Genus iu Germany, 39— Evergreens which It pre- 

 fers, 30— Habits and Characters of the Worm, 30— Characters of the perfect Flies, 

 30, 31— Variation in the Antennae. 30— How the Eggs are laid, 31— Natural Enemies, 

 31 — Remedies, 32 — Descriptive, 32. 



