Walnut Husk Fly

Authors

Diane Alston, Utah State UniversityFollow
Marion Murray, Utah State University
James Barnhill, Utah State University

Document Type

Factsheet

Publisher

Utah State University Extension

Publication Date

1-1-2015

Abstract

Walnut husk fly (Order Diptera, Family Tephritidae; Fig. 1) is the most common insect pest of walnuts in Utah. Husk fly larvae (maggots) tunnel in walnut husks, causing them to soften and decay, and stain the shell (Fig. 2). Damaged husks are difficult to remove. If husk fly infestation occurs early in kernel development, nuts may shrivel, darken, become moldy, and drop from the tree (Fig. 3).

Recommended Citation

Alston, Diane; Murray, Marion; and Barnhill, James, "Walnut Husk Fly" (2015). All Current Publications. Paper 980.
https://digitalcommons.usu.edu/extension_curall/980