European Earwigs

European earwigs survive well in cool, moist habitats and have an optimum mean growth temperature of 24 °C (75 °F). Their daily abundance in a given year has been linked to factors such as temperature, wind velocity and the prevalence of easterly winds. The development of European earwigs also depends on temperature. Thus, the occurrence of European earwigs can be predicted based on weather parameters. Hibernating adults can tolerate cool temperatures, but their survival is reduced in poorly drained soils such as clay. To avoid excessive moisture, they seek the southern side of well drained slopes. Sometimes they also occupy the hollow stems of flowers where the soil is poorly drained. Their eggs are capable of resisting damage from cold and heat.