MALLIS 101

LICE   metamorphosis?

LICE   have gradual metamorphosis, so _ look similar to _

FLEAS   metamorphosis?

LIFE    all life stages are parasitic and remain on the _

FLEAS/LICE   neither have _, so neither can _

FLEAS     are _ compressed

FLEAS   adults feed only on blood of _ hosts

SPP    it's larva resembles the larva of the drugstore beetle, but the head is retracted into the thorax to about the level of the mandibles

_ = chemicals produced by one species that attract a different species, usually for its own advantage.