A Catalog of the California Aleyrodidae 
and the Descriptions of Four 
New Species 
By DONALD D. PENNY 
Introduction 
This paper consists of a list of the already described species of 
Aleyrodidae, or white flies, taken from the State of California, and 
a record of their food plants and localities together with the descrip- 
tions of four new species. 
The writer has not attempted to give a systematic arrange- 
ment of the family in this paper but has laid much stress on the 
completeness of the list of food plants upon which the different 
species have been taken in order that from a knowledge of the food 
plants the family will be more readily accessible and at the same 
time may be kept up to date in respect to the host records. 
In the collecting of specimens the writer has not been con- 
fined to any one section of the state but has taken and received 
specimens from a wide range of localities, including sections of 
both high and low elevation, from the extreme north to the extreme 
south of the state. This has resulted in the recording of some new 
hosts for the already described species as well as the finding of 
the four new species herein described. 
The writer desires to thank Professor E. O. Essig for the 
many specimens given and other kind assistance rendered during 
the preparation of this paper. 
Paratypes of the author’s new species have been deposited 
with the collection of the California Academy of Sciences, Golden 
Gate Park, San Francisco, California. 
Dialeurodes citri (Riley and Howard) 
(Aleyrodes citri Riley and Howard) 
Syn.: aurantii Maskell 
1898—Insect Life, vol. 5, p. 219. 
Food Plants.—Ailanthus glandulosa, Allamanda neriifolia, 
Ampelopsis tricuspidata, Ceracus sp., Choisya ternata, Citrus spp., 
Coffea arabica, Diospyros kaki, Diospyros virginiana, Ficus macro- 
phylla, Fraxinus lanceolata, Gardenia florida, Gardenia jasmin- 
oides, Hedera helix, Jasminum fruticans, Jasminum odoratissimum, 
Ligustrum amurense, Ligustrum sp., Maclura aurantiaca, Melia 
azedarach, Melia azedarach var. wmbraculiformis, Myrtus com- 
munis, Magnolia fuscata, Myrtus lagerstroemia, Osmanthus amer- 
