Common land planarians are easily identified by their triangular, spade-shaped head. Some can stretch out a foot in length.

A dog-killing parasite that was believed to only exist in Texas and other Gulf Coast states has been discovered as far west ...

According to the journal PeerJ, an invasive species of flatworm, Amaga pseudobama, has already appeared in at least three US ...

An invasive flatworm recently detected in Skåne in the far south of the country, with suspected sightings in two other counties in Sweden, poses such a potential threat to native earthworms and ...