Table 4. A list of the pesc Problems under study by the Urban Blological Control projecc,
University Berkeley, Californta, 1977 showing monchly diseribucton of requests
from citi
indoor pest problems studi
Palo Alto, California ty,

Pest Species Importance
mS aBportance . .
Rank =Tocal % Jan Feb Mar Apr May Jun Jul Aug Sepe Oce Nov D

Phryganidia californica 1° 24 76 386 4n 132 Wlo6:+7 15 3
California Qakmoth , .

Hyphantria cunea . 38

Fall webwors

Pyrrhalta luceols

Elm leaf beecle

Drepanaphis acertfolii

Silver maple aphid

Tllinota lirtodendri
Tulip cree aphid

Atchips arsyros {lus
Fruit tree leaf roller
J

an
Lithophane acrenata

Green fruit worn

Prociphilus fraxinfolii
aati potius mnRintotis

Modesto ash aphid

Euceraphis Dunctipennis
en fume ctspennis
and :

Callipcerineila calitpcera

Birch aphids

Schizura-‘concinna
Red-hump caterpillar

Myzocallis Sp.,

Tuberculoides sp.
and
Tuberculatus Sp.
Oak aphids

Orgyia vetusta

White faced tussock moth

Hyalopterus prunt

Plum aphid

Gossyparia Spuria

European eim scale

Us 06 Table 5 for additional infornation on che cities parcicipacing in this Project and
respective sizes.