The species epithet refers to the tuberculate surface ornament of the teeth.

The species epithet refers to the locality where the specimens were collected from.

The species epithet refers to the dark brown or black pigment of the internal jaw.

It is found in Madura, from which its species epithet is derived.

The species epithet refers to the US state where it was collected.

It is known from Mexico, from which its species epithet is derived.

There are currently 113 published species epithets for the genus of which 103 are likely legitimate.

The species epithet refers to the country in which it was discovered.

The species epithet refers to the family name of friends of the authors.

The species epithet is from the Latin peregrina, meaning that comes from foreign parts.