Apristurus herklotsi (Longfin catshark)

In 1999, Nakaya and Sato grouped this species with the similarly long-snouted longfin catshark (A. herklotsi) in the longicephalus species group.

The longfin catshark, Apristurus herklotsi, is a cat shark of the family Scyliorhinidae found in the western Pacific from Japan, the Philippines, East and South China seas, and the Kyūshū-Palau Ridge, at depths of between 530 and 865 m. Its length is up to 48 cm.