Entomology, Department of


Date of this Version



Annals of the Entomological Society of America 64:1 (1971), pp. 116–119.

doi: 10.1093/aesa/ 64.1.116


Copyright © 1971 Entomological Society of America. Published by Oxford University Press. Used by permission.


Eggs of 12 species of sod webworm were exposed for various periods to temperatures of 0, 10, and 45°C. Hatchability was compared with control eggs kept at 25°C. Short exposures to any temperature did not significantly affect percent hatch. Prolonged exposure resulted in a significant decrease in hatchability for several species at 0° and for all species at 45°C. There was a significant difference in hatchability between the 3 generations of Crambus teterrellus (Zincken) and of Pediasia trisecta (Walker) at extreme temperatures. Populations of Agriphila ruricolella (Zeller), collected at 2 elevations, differed significantly in hatching percentage and developmental rate.

Included in

Entomology Commons