Abstract
Laboratory studies of effects of temperature and adult density (10 females or 50 females per 250 cm 2 phloem of Ulmus Americana L.) on maternal gallery construction and oviposition by Scolytus multistriatus (Marsham) indicated that response of adult beetles at 25 and 30°C was similar. At the higher density, maternal galleries were shorter (20 mm) and there were fewer egg niches per unit length of gallery (1.8/mm); at the lower density, maternal galleries averaged 23 mm and there were 2.5 egg niches per mm of gallery. Length of the egg-free portion of the maternal gallery was similar at both densities.
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