Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Adult and immature thrips (Thrips tabaci). The adult on left has four wings lined with long hairs. Immatures are wingless and generally are light colored. Immatures are generally light colored without wings. Adults vary in color and have four wings lined with long hairs.
Whitney Cranshaw, Colorado State University, Bugwood.org
Leaf scaring injury to onion.
Whitney Cranshaw, Colorado State University, Bugwood.org
Nymphs at base of leaf of onion.
Whitney Cranshaw, Colorado State University, Bugwood.org
Nymphs on onion.
Whitney Cranshaw, Colorado State University, Bugwood.org
Scarring of cabbage leaf.
Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Smaller, tan thrips on left is the onion thrips (Thrips tabaci). Larger yellowish thrips on the right is the western flower thrips (Frankliniella occidentalis).
Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Thrips tabaci (on left) and F. occidentalis (on right) adults. Thrips sp. have a prominant row of hairs at the back of the first segment behind the head. Frankliniella sp. have a prominant row of hairs at the back and front edge of this segment.
Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Thrips damage on onions. Light colored areas are the result of heavy feeding by thrips on the onion leaves.
Alton N. Sparks, Jr., University of Georgia, Bugwood.org
Close-up of thrips feeding damage on onion leaf.
Whitney Cranshaw, Colorado State University, Bugwood.org
onion thrips (Thrips tabaci) damage on cabbage (Brassica oleracea var. capitata)
Whitney Cranshaw, Colorado State University, Bugwood.org
First instar nymph of onion thrips (Thrips tabaci).
Whitney Cranshaw, Colorado State University, Bugwood.org
Second instar nymph (and damage to leaf) of the onion thrips (Thrips tabaci).
Whitney Cranshaw, Colorado State University, Bugwood.org
Foliage injury to upper surface of cucumber leaf.
Howard F. Schwartz, Colorado State University, Bugwood.org
Kaolinite dust/spray applied to onion plants as part of onion thrips management strategy on a field at Colorado, USA.
Diane Alston, Utah State University, Bugwood.org
Severe onion plant injury from onion thrips
Diane Alston, Utah State University, Bugwood.org
Adult female