3 Other Mite TermsCool-season Mites – most active in spring and fall seasons, when temperatures are above freezing but blow 80F during the day.Warm-season Mites – Seem to do best during summer warm periods, also do well in drought.Gall Mites – cause plant distortions or abnormal growths.Rust Mites – cause general yellowing or bronzing of the foliage, but mites are almost too small to see.
4 Bryobia spp.Clover mite (B. praetiosa) – cool-season grass and weed feeder.Honeysuckle bryobia (B. lonicerae) – common on shrub honeysuckle
5 Panonychus spp.European red mite (P. ulmi) – warm-season mite on fruit trees and Crataegus.Adult femaleStippling of apple leaf.
6 European red mite (P. ulmi) – warm-season mite on fruit trees and Crataegus. Adults ballooningOverwintering egg clusters(dormant oils?)
7 (dozen species, yellow to green) Eotetranychus spp.(dozen species, yellow to green)Honeylocust mite (E. multidigituli) – warm-season on leaf undersurfaces.
8 (dozen species, yellow to green) Eotetranychus spp.(dozen species, yellow to green)Linden mite (E. tiliarium) – warm-season on leaf undersurfaces.
9 Tetranychus spp.Twospotted spider mite (T. urticae) – warm-season mite of greenhouses, annuals and perennials, winged euonymus and some Viburnum.
14 Spruce spider mite populations (thick line) over the 1993 season in Columbus, OH. Note that the population of active mites disappears in early July due to several days with temperatures above 29°C (=86°F), a characteristic of a cool-season mite.