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musk thistle biological control


10 Images
0580013
Loke T. Kok
Virginia Polytechnic Institute and State University

basal rosette

0580016
Loke T. Kok
Virginia Polytechnic Institute and State University

in bloom

0580019
Loke T. Kok
Virginia Polytechnic Institute and State University

0580021
Loke T. Kok
Virginia Polytechnic Institute and State University

on thistle head

0580014
Loke T. Kok
Virginia Polytechnic Institute and State University

feeding on receptacle of thistle head

0580017
Loke T. Kok
Virginia Polytechnic Institute and State University

tufts of hair rising from infested thistle head

0580020
Loke T. Kok
Virginia Polytechnic Institute and State University

0580022
Loke T. Kok
Virginia Polytechnic Institute and State University

thistle head showing pupation chambers

0580015
Loke T. Kok
Virginia Polytechnic Institute and State University

site before release

0580018
Loke T. Kok
Virginia Polytechnic Institute and State University

site five years after release