Parasitoid sucking its host spider dry and weaving a cocoon on the web /

Polysphinctine wasps (ichneumonidae) kill their host spiders in the final phase of parasitism drying the spiders off and weave a cocoon on the web. Legless larvae bear tubercles with numerous minute hooked-setae on their dorsal sides of each segment in order to hang themselves from the web. This video is sequence from killing the host spider (Cyclosa argenteoalba, Araneidae) to cocooning by a larva of Reclinervellus nielseni with the length speeded up x640. The larva sucks spider's haemolymph from s