Biology of Scymnus ningshanensis (Coleoptera: Coccinellidae): A predator of Adelges tsugae (Homoptera: Adelgidae)

摘要: Information is presented on the occurrence, development, and feeding of Scymnus (Neopullus) ningshanensis Yu et Yao. its biology was collected in field laboratory China quarantine United States. This lady beetle found only hemlock infested with Adelges tsugae Annand did not occur nearby pine another adelgid. In laboratory, newly hatched larvae survived if they could feed woolly adelgid eggs. Development immature stages about 10% faster than S. (N.) sinuanodulus that occurs farther south China. The climate native habitat similar to Connecticut respect temperature, but rainfall lower winter higher summer Connecticut. Eggs are laid spring for several weeks, both field. Feeding eggs stimulates egg production. species univoltine without a true diapause, although adults inactive at temperatures below 7°C.