What is the larval behavior of cluster flies?

The larval behavior of cluster flies is characterized by their parasitic relationship with earthworms. Cluster fly larvae develop by infesting and consuming the tissues of earthworms. This unique life cycle is a critical part of their biology, as larvae typically enter the earthworm's body, where they continue their development by feeding on the soft tissues.

This relationship distinguishes cluster flies from many other insect species that may feed on plant material, decaying matter, or act solely as scavengers. While other options describe behaviors found in different insect life cycles, they do not accurately represent the specific larval behavior of cluster flies, which exclusively rely on earthworms as their host for survival and growth. Understanding this parasitic relationship is key to recognizing how cluster flies interact with their environment and the organisms within it.