Abstract
Mimosa webworm, Homadaula anisocentra Meyrick, larvae were reared in the laboratory on five honey locust clones: ‘Imperial,’ ‘Moraine,’ ‘Shademaster,’ ‘Skyline,’ and ‘Sunburst.’ Larvae fed ‘Moraine’ had significantly smaller head capsule widths and pupal weights, longer larval development times, and lower adult fecundity. Fecundity was most affected by the cultivar used for rearing. Adult females reared on ‘Moraine’ foliage produced approximately 44% fewer eggs than did females reared on the other four cultivars. Such reduced fecundity theoretically could affect webworm infestation levels of isolated ‘Moraine’ trees in urban areas. Larval and pupal mortality were unaffected by cultivar. Although we observed statistically significant detrimental effects from feeding on ‘Moraine’ foliage, differences were small and may not be biologically significant.
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