Dispersal of Labops hesperius1 on Rangeland2, 3

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Abstract
In 1974 the adult population of Labops hesperius Uhler near Vale, Oregon was 43% macropterous males, 53% brachypterous females and 4% macropterous females. The macropterous adults made escape flights of 15–60 cm and migratory flights occurred at altitudes of up to 2 m, primarily in the afternoon. The maturation of ovaries of macropterous females was delayed until after a 3 week flight period. The color of trap (red, white, blue or yellow) did not influence the number of adults caught. Nymphs and adults run rapidly but do not disperse far on the ground. The dispersal capability of L. hesperius is limited so the spread to uninfested areas will probably be slow. Bug density was positively correlated with old growth wheatgrass straw but not new foliage.

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