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Nematolampas
- Nematolampas regalis Berry, 1913
- Nematolampas venezuelensis Arocha, 2003
Containing group: Lycoteuthidae
Introduction
Nematolampas contains two species each of which are known only from only a few males. One species, N. regalis, is from the subtropical South Pacific and the other, N. venezuelensis, is from the tropical North Atlantic.
Diagnosis
A lycoteuthin ...
- with greatly elongate arms III with suckerless, filamentous tips and bearing numerous photophores proximally (only in males?).
Characteristics
- Arms
- Arms III much longer than mantle length and with suckerless, filamentous tips.
- Photophores
- Large photophore at posterior mantle apex absent.
- Numerous photophores on arms III.
- Photophores on arms II and III subterminal.
- Each tentacle with two photophores.
- Viscera
- Males with single set of genitalia.
Comments
The two species are most easily separated by the structure of arms II. In N. regalis arms II are unmodified in size and shape while in N. venezuelensis they are greatly elongated (but not as long and robust as arms III) and have filamentous tips.
