Webspinning Spider Mites
UC Management Guidelines for Webspinning Spider Mites on Fig. The twospotted spider mite is most common in the Sacramento Valley and the Pacific spider mite in the San Joaquin Valley. Both species produce abundant webbing on both sides of the ... [... more]
University of California IPM |
Willamette spider mite: Eotetranychus willamettei
UC Management Guidelines for Webspinning Spider Mites on Grape. The Pacific spider mite is the primary pest mite species in the San Joaquin Valley and may also be the primary pest mite in certain North Coast grape-growing areas. Adult Pacific ... [... more]
University of California IPM |
SPRING-SUMMER
UC Management Guidelines for Webspinning Spider Mites on Apricot. These two spider mites are very similar looking as adults, have similar life histories, and are controlled in the same manner. Overwintering female mites are red or orange and are ... [... more]
University of California IPM |
McDaniel spider mite: Tetranychus mcdanieli
UC Management Guidelines for Webspinning Spider Mites on Apple. Adult female mites are larger and more elongated than European red mites and are green to yellow. Feeding mites have a dark spot on either side of the body that may enlarge to cover ... [... more]
University of California IPM |
Treatment thresholds.
UC Management Guidelines for Webspinning Spider Mites on Walnut. Pacific and twospotted mites overwinter as reddish orange, mature females in protected places on the tree, in soil, and in trash on the ground. During warm weather in spring, ... [... more]
University of California IPM |
Mite Ratings
UC Management Guidelines for Webspinning Spider Mites on Plum. Twospotted and Pacific spider mites are not easily distinguished: both have two black spots on their yellow-green bodies. In fall they turn orange red before overwintering. The ... [... more]
University of California IPM |
How to Monitor:
UC Management Guidelines for Webspinning Spider Mites on Prune. Webspinning mites are mites that form webs and cause defoliation. In prunes, they include twospotted spider mites and Pacific spider mites. Twospotted and Pacific spider mites are ... [... more]
University of California IPM |
SPRING-SUMMER
UC Management Guidelines for Webspinning Spider Mites on Cherry. These two spider mites have similar life histories and are controlled in the same manner. Overwintering female mites are red or orange colored and are found under rough bark, in ... [... more]
University of California IPM |
Strawberry spider mite: Tetranychus turkestani
UC Management Guidelines for Webspinning Spider Mites on Almond. These three spider mites are difficult to distinguish as adults, have similar life histories, and are controlled in the same manner. However, Pacific mite is often the most ... [... more]
University of California IPM |
Mite Ratings (percent of leaves with one or more mites):
UC Management Guidelines for Webspinning Spider Mites on Peach. Pacific and twospotted spider mites overwinter as adult females in protected places on the tree or in the litter, trash, and weeds on the orchard floor. The overwintering forms of ... [... more]
University of California IPM |
Spot Treatments
UC Management Guidelines for Webspinning Spider Mites on Cotton. To the naked eye, spider mites appear as tiny moving dots. Adult females are about 0.01 inch (0.3 mm) long. Spider mites live in colonies, mostly on the lower surfaces of leaves, ... [... more]
University of California IPM |
low/moderate
UC Management Guidelines for Webspinning Spider Mites on Nectarine. Treatment Decisions (Treat if the rating from at least one 5-minute search indicates): Pacific and twospotted spider mites overwinter as adult females in protected places on the ... [... more]
University of California IPM |
