Observations on the Life History of the Lesser Cornstalk Borer1

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Abstract
Life history studies on the lesser cornstalk borer, Elasmopalpus lignosellus (Zeller), a destructive pest of grasses and legumes, were conducted at Experiment, Georgia, during 1957-58. Eggs were laid 3.4 and 6.6 days after pairs were caged, oviposition was over a period of 7.8 and 4.1 days. Incubation time ranged from 2-4 days. Larval periods averaged 33.0 and 35.7 days for the 2 years, with pupal stages of about 9 days. Six larval instars were observed and cast head capsules of individually reared larvae were measured for sizes at each ecdysis. Head widths were calculated using Dyar''s Rule and days spent in each instar are given. Ranges for all developmental periods are included.

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