Nematolampas regalis, the regal firefly squid[3] is a small, little-known species of squid from the family Lycoteuthidae which is found in the subtropical South Pacific Ocean.

It may be sexually dimorphic, with the males possibly having very thin elongated arms III, which are increasingly thread like towards their tips, where they do not have any suckers.

Arms II are "normal" and have suckers along their length.

The third arms have a series of photophores along their length, and there is a small photophore located on each of the tips of arms I and II.

[4] N. regalis is known only from the Kermadec Islands near New Zealand; one of the specimens was beached while the other two were caught by a trawl at a depth of 48m.