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Average number of eggs (+SE) laid by female American hoverflies, Eupeodes americanus (n = 24 at 18°C, n = 30 at 15°C, n = 59 at 12°C) and silverflies, Leucopis glyphinivora (n = 35 at 18°C, n = 34 at 15°C, n = 46 at 12°C) over a period of 7 d at 12, 15, and 18°C (a) and over a period of 7 and 14 d (n = 20 for E. americanus and n = 33 for L. glyphinivora) at 12°C (b). Treatments with a different letter and an asterisk are significantly different (ANOVA, P < 0.05).
