Recent rain has caused the hammerhead flatworm, an invasive species, to emerge from its underground home, experts said.

Invasive hammerhead worms are spreading in Texas, and have been spotted in Houston, Dallas, Austin and toward the coast.

This undated image provided by Bugwood.org shows a hammerhead worm on a leaf in India. The narrow, snakelike flatworm has a ...

This undated image provided by Bugwood.org shows a hammerhead worm on a leaf in India. The narrow, snakelike flatworm has a head built like that of a hammerhead shark. (Arun T.P. / AP) After heavy ...

Known for its head shaped like a hammerhead shark, the worm is typically light, honey-colored with a darker collar and one to five stripes on its body, according to the Texas Invasive Species ...

Known for its head shaped like a hammerhead shark, the worm is typically light, honey-colored with a darker collar and one to five stripes on its body, according to the Texas Invasive Species ...

This undated image provided by Bugwood.org shows a hammerhead worm on a leaf in India. The narrow, snakelike flatworm has a head built like that of a hammerhead shark.

Hammerhead worms are hermaphroditic, so they reproduce without a mate. But that’s not the only way they multiply: Their favorite party trick is detaching a portion of their rear ends and leaving ...

Hammerhead worms are hermaphroditic, so they reproduce without a mate. But that’s not the only way they multiply: Their favorite party trick is detaching a portion of their rear ends and leaving ...

Known for a head shaped like a hammerhead shark, the worm is typically light honey colored with a darker collar and one to five stripes on its body, according to the Texas Invasive Species Institute.

Hammerhead worms are hermaphroditic, so they reproduce without a mate. But that’s not the only way they multiply: Their favorite party trick is detaching a portion of their rear ends and leaving ...

Hammerhead worms are hermaphroditic, so they reproduce without a mate. But that’s not the only way they multiply: Their favorite party trick is detaching a portion of their rear ends and leaving them ...