UNITED STATES 
DEPARTMENT OF AGRICULT 
MISCELLANEOUS PUBLICATION NO. 344 
Washington, D.C. July 1939 
TAXONOMY OF SOME SCALE INSECTS 
OF THE GENUS PARLATORIA! EN- 
COUNTERED IN PLANT QUARAN- 
TINE INSPECTION WORK: 
By HArotp Morrison, senior entomologist, Division of Insect Identification, 
Bureau of Entomology and Plant Quarantine 
CONTENTS 
Page | Descriptions of species—C ontinued. Page 
Merit rOGuUChlO nesses ee ee 1 Parlatoria camelliae Comstock____________ 8 
Structural characters considered in this study_ 3 Parlatoria cinerea Hadden_______________- 10 
IBNV.CS [OL ees es ee ee aoe See 3 Parlatoria crotonis Douglas____-__----___- 12 
SDIRAC CS eee we ne ee a ee ee 3 Parlatoria fulleri, new name______-__-_-__-- 13 
AD UCL Wer] ese mte = tere see ree eee 3 Parlatoriaoleae: (Colvée)es 2 ee ee 15 
Dorsalitubularduwctss 2s =e eee 4 Parlatoria pergandii Comstock_____-__-___- 18 
Cicatrices and sclerotic areas____________- 5 Parlatoria pittospori Maskell___.__________ 20 
eA ChE Wh ae ee eS 5 Porlaioria-proteus| Curtiss eee 22 
At CS see ee a eee ee eS 5 Parlatoria theae Cockerell______-______-_____ 25 
Paragemitalseaaet eect em ee 6 Parlatoria zizyphus (Lucas)____---__---__-- 27 
Other characters_______-_- Beste ns et ee Men 6 | List of species described and their synonyms_ 28 
Descriptions ol Speciese-20 === 6 | Key to species of Parlatoria herein described - 29 
Parlatoria banksiae (Maskell) ______-__---- Gal Plait eratune cite dae = ee ee eee eee 31 
Parlatoria blanchardi (Targioni Tozzetti) _- 7 
INTRODUCTION 
Certain scale insects of the genus Parlatoria have for many years 
been recognized as of economic significance. The frequency ‘with 
which some of them are encountered on plant material coming into 
the United States from foreign sources suggests that the importance 
of the genus as a whole has greatly increased owing to the spread 
of its members in injurious numbers to new localities and to new 
plant hosts. The Department of Agriculture has only recently suc- 
cessfully completed an extended campaign for the eradication of one 
of the species infesting date palms, which established itself many 
years ago in the Southwestern States. Species of Parlatoria are re- 
corded as serious pests of citrus groves in various parts of the world, 
and other species have been recorded as injurious to various horti- 
culturally important rosaceous hosts, such as the apple, pear, and 
1 Hemiptera : Coceoidea. 
129579—39 1 
ae, 
ee, ae ARIMENT OF pare i 
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