The biology of Lema trilineata daturaphila Kogan & Goeden was studied under controlled laboratory conditions. Adult females oviposited during 3-4.5 months and laid a maximum total of 2700 eggs. The mean duration of the developmental stages (in days) was: egg 4-5, larval 8, prepupal 4-5, pupal 6-7. The insect in all stages is described and figured, as is the distribution of larval chemoreceptors. Larvae increased an average of 184 times in weight, or a total of 60 mg, and consumed an average total of 217.3 mg of food during their development, which yielded a gross food conversion ratio of 0.276. Slow- and fast-developing larvae were observed to deviate from the mean in both overall weight gain and gross conversion ratio.
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Kogan et al. (1970) studied this question.
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