The Growth and Development of Ephestia Kuehniella Zeller (Lepidoptera) and Tri-Bolium Confusum Duval (Coleoptera) under Controlled Conditions of Temperature and Relative Humidity.*

The confused flour beetle (Tribolium confusum Duval) and the Mediterranean flour moth (Ephestia kuehniella Zeller) have long been recorded as serious pests of stored grain products (Riley 1889, Chittenden 1896). In recent years they have served as very valuable material for laboratory experiments on insect nutrition (Chapman 1924, Richardson 1926). In spite of the economic and scientific importance of these two insects the writer could find little detailed information on their growth and development under carefully controlled conditions of temperature and relative humidity, on a normal whole wheat diet.