Fruit & Nut Research and Information Center
Fruit & Nut Research and Information Center
Fruit & Nut Research and Information Center
University of California
Fruit & Nut Research and Information Center

Quince Insect & Mite Pests

Quince in California > Deficiencies & Pests >  Insect & Mite Pests

Codling moth damages quince fruit directly by boring into fruit. Larvae either “sting” fruit, boring only a short distance into the flesh, or bore into the core of a fruit and consume the seed cavity. Codling moth only develops between temperatures of 50°F to 88°F. (UC IPM website, 2014).

Twospotted Spider mites appear on fruit leaves at the bottom of the canopy after warmer weather begins, then gradually spread throughout the rest of the canopy. Mites only feed on leaves, but affect fruit by reducing photosynthesis and defoliating trees. Pre-harvest defoliation results in smaller fruit, while postharvest defoliation can affect the following year’s fruit. In both cases defoliation can result in a late fall bloom and dramatically reduce flowering in the following spring. Twospotted spider mites can be effectively controlled by other beneficial insects & mites. If insecticides are used to prevent other pests beneficial insect populations can also be reduced, resulting in spider mite infestations (UC IPM website, 2014)

Photo Gallery
These photos are accessed from the UC ANR Repository, are available courtesy of University of California research and extension personnel and programs, including the UC Statewide IPM Project.

 Insects & Mite Pests | Diseases | Vertebrates

Mature diapausing codling moth larvae. photo by JK Clark, UC IPM Project © UC Regents
Mature diapausing codling moth larvae. photo by JK Clark, UC IPM Project © UC Regents
Spider mite adults and egg. photo by JK Clark, UC IPM Project © UC Regents
Spider mite adults and egg. photo by JK Clark, UC IPM Project © UC Regents
Pear slug larva and damage on quince leaf. photo by JK Clark, UC IPM Project © UC Regents
Pear slug larva and damage on quince leaf. photo by JK Clark, UC IPM Project © UC Regents

Page Last Updated: September 15, 2014
Webmaster Email: fruitsandnuts@ucdavis.edu