Abstract
1. 1. Free amino acid occurrence in Gnorimoschema gallaesolidaginis Riley (Lepidoptera: Gelechiidae) and Eurosta solidaginis (Fitch) (Diptera: Tephritidae) larval body tissue; gall-free goldenrod, Solidago canadensis L., stem tissue; G. gallaesolidaginis caused elliptical galls; and E. solidaginis caused ball galls was assessed using two-dimensional paper chromatography. 2. 2. Eighteen free amino acids were identified in both larval insect body tissue and in normal stem tissue. 3. 3. Fifteen free amino acids were identified in both types of gall tissues. 4. 4. Free amino acids increased or remained constant in all tissues over time. 5. 5. Differences in free amino acids in the larval insect tissues could be due to differences in chronology of life cycles.
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