Hammerhead Flatworm

Description:

Light brown body with one black dorsal stripe, a thick black collar, and two black shadowy regions on the semi-circle-shaped head. It's underside was lighter in color, off-white to pale beige. Coated in mucus. It left mucus trails behind as it moved.

Habitat:

This planarian was found on a flagstone patio beside a lawn in southern Texas near San Antonio. Map location approximate only.

Notes:

I mistook it for a slug when I saw it. I had my brother hold it on a blade of grass that I might better photograph it and was surprised to see it descend from the blade on a thread of mucus and drop back down onto the patio. There were several other hammerhead flatworms on the patio at the time. I believe this is a specimen of Bipalium vagum, but similarities between that species and Bipalium kewense together with my lack of experience prompt my request for a second opinion.