Abstract
Larvae of a bark beetle, Ips calligraphus (Germar), were reared on semiartificial diets containing previous year’s (mature) or current year’s (immature) foliage of Pinus elliottii Engelman var. elliotti . On diets containing 11.8–28.6% foliage, development to the adult stage was 19–44% with previous year’s foliage vs. 1–9% with current year’s foliage. Larval and pupal development was slower on current year’s foliage diets, and adults did not develop normal pigmentation on such immature foliage. Adults reared on diets with both ages of foliages were able to reproduce normally on the inner bark of pine logs (natural food and habitat) through the F3 generation.
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