Skin Scam: Parasite’s host provides an insect hideaway

A group of parasitic insects tough enough to kill fire ants has shown researchers a nasty new trick. The creatures hide inside their victim by making the host form a protective bag of its own skin.

INTRUDER. A parasitic Strepsiptera insect in its victim-searching form (above) burrows into the tissue of a katydid host, which wraps the invader in a skin bag (arrow, below).