Abstract
When F. G. Maxwell and J. N. Jenkins (ARS, USDA, State College, Miss.) compiled an up-to-date bibliography on biologically active substances present in host plants that have been extracted and demonstrated to cause a behavioral response in insects (unpublished data), they listed 68 examples of insects representing 7 orders for which a substance ( s ) capable of eliciting an arrestant or feeding response had been determined. Several researchers have demonstrated the presence of a substance(s) in cotton, Gossypium hirsutum L., that fits the definition of Dethier et al. (1960) of a feeding stimulant. Keller et al. (1962) reported a substance in the water extract of cotton squares that arrested the boll weevil, Anthonomus grandis Boheman, and stimulated it to feed on unnatural substances. Maxwell et al. (1963) demonstrated that this arrestant and feeding stimulant was present in all parts of the cotton plant.
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