ILLUSTRATION'S. 
PLATES. 
Page. 
Plate I. Stages and work of the plum curculio. Fig. 1. — The adult or beetle, 
lateral aspect. Fig. 2. — Beetle, dorsal aspect. Fig. 3. — Larva. 
Fig. 4. — Pupa. Fig. 5. — Larva, or grub, and its work in cherry. 
Fig. 6. — Injury to ripe peach. Fig. 7. — Feeding punctures and 
scars from egg punctures on apple Frontispiece. 
II. Work of plum curculio on plum. Fig. 1. — Egg and feeding punctures 
on young wild-goose plum. Fig. 2. — Nearly ripe wild plums, 
showing egg scars and gum exudation from feeding punctures 32 
III. Work of plum curculio on plum. Fig. 1. — Effect of egg and feeding 
punctures, with gum exudations, on ripe Japanese plums. Fig. 2. — 
Fall feeding punctures on ripe prunes 32 
IV. Work of plum curculio on peach. Fig. 1. — The adult curculio on 
newly set peach. Fig. 2. — Curculio larva, or grub, and its work 
in ripe peach 36 
V. Work of plum curculio on peach. Fig. 1. — Wormy windfall peaches. 
Fig. 2. — Peaches deformed by egg and feeding punctures 36 
VI. Work of plum curculio on peach. Fig. 1. — Deformed ripe peaches. 
Fig. 2. — Gum exudation from curculio punctures 36 
VII. Work of plum curculio on apple. Fig. 1. — Egg and feeding punctures 
on young apples. Fig. 2. — Egg punctures on apple some days old.. 40 
VIII. Work of plum curculio on apple. Fig. 1. — Young apples, showing 
scars from egg punctures. Fig. 2. — Ripe apples deformed and 
knotty from egg and feeding punctures of the curculio 40 
IX. Work of plum curculio on apple. Fig. 1. — Imperfectly developed 
apple from tree in which curculio grubs matured. Fig. 2. — Small 
drop apples in which curculio grubs matured. Fig. 3. — Nearly 
ripe summer apple from ground, showing extent of feeding by two 
curculio larva? 40 
X. Injury by plum curculio to pears. Knotty and deformed ripe pears 
resulting from egg and feeding punctures 44 
XI. Plum curculio injury to cherries. Cherries cut open, showing the 
grub and its work 44 
XII. Methods of study in plum-curculio investigation, Barnesville, (la. 
Fig. 1. — Out-of-door house used in Life-history work. Fig. 2. — Soil 
cages used in obtaining data on life of insect in ground 48 
XIII. The fall feeding punctures of the plum curculio on apple. Fig. 1. — 
Characteristic holes eaten into apple by the beetles in the fall. 
Fig. 2. — Feeding punctures of beetles on summer apples 12S 
XIV. Jarring apparatus in use or recently in use against the plum curculio. 
Fig. 1. — A wheelbarrow curculio catcher used in New York State. 
Fig. 2. — Curculio catcher made by sheets on frames, in use a few 
years ago in Georgia 172 
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