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Five stages of nymphs, from newly hatched to mature of the squash bug, <i>Anasa tristis.</i>

Five stages of nymphs, from newly hatched (a) to mature (e) of the squash bug, Anasa tristis.

Illustration adapted from F. H. Chittenden. 1899. Some Insects Injurious to Garden and Orchard Crops. U.S. Dept of Agric., Bulletin No. 19.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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