Tubulariida

Medusa of Euphysa aurata, from Russ Hopcroft.

Belongs within: Capitata.
Contains: Corynoidea, Tubulariidae.

The Tubulariida are a group of hydroids characterised by the tendency for the oral whorl(s) of tentacles to become emphasised over the aboral tentacles.

Characters (from Petersen 1979): Aboral tentacles present or reduced; oral tentacles present as single whorl, several closely set whorls, or spreading down over the hydranth body. Desmoneme and stenotele nematocysts always present.

<==Tubulariida
    |  i. s.: Hypolytus Murbach 1899 P79
    |--Tricylusa [Tricyclusidae, Tricyclusoidea] P79
    |    `--T. singularis (Schulze 1876) P79
    `--+--Acauloidea P79
       |    |--Acauloides Bouillon 1965 [Acaulidae] CS-P86
       |    |    `--A. ammisatum Bouillon 1965 CS-P86
       |    `--Candelabridae P79
       |         |--Monocoryne gigantea (Bonnevie 1898) P79
       |         `--Candelabrum de Blainville 1830 P79
       `--Tubularioidea P79
            |  i. s.: Boreohydridae CS-P86
            |           |--Psammohydra Schulz 1950 CS-P86
            |           |    `--P. nanna Schulz 1950 CS-P86
            |           |--Meiorhopalon Salvini-Plawen 1984 CS-P86
            |           |    `--M. arenicolum Salvini-Plawen 1984 CS-P86
            |           `--Siphonohydra Salvini-Plawen 1966 CS-P86
            |                `--S. adriatica Salvini-Plawen 1966 CS-P86
            |--Euphysa Forbes 1848 CS-P86 [Corymorphidae P79, Euphysidae]
            |    |--E. aurata Forbes 1848 P79
            |    |--E. farcta (Miles 1937) P79
            |    `--E. ruthae Norenburg & Morse 1983 CS-P86
            `--+--Corynoidea P79
               `--+--Halocordylidae P79
                  `--+--Margelopsidae P79
                     |    |--Margelopsis Hartlaub 1897 P79
                     |    `--Pelagohydra Dendy 1902 P79
                     `--+--Tubulariidae P79
                        `--Paracoryne [Paracorynidae] P79
                             `--P. huvei Picard 1957 P79

*Type species of generic name indicated

REFERENCES

[CS-P86] Clausen, C., & L. v. Salvini-Plawen. 1986. Cnidaria. In Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) (L. Botosaneanu, ed.) pp. 33-42. E. J. Brill / Dr. W. Backhuys: Leiden.

[P79] Petersen, K. W. 1979. Development of coloniality in Hydrozoa. In Biology and Systematics of Colonial Organisms (G. Larwood & B. R. Rosen, eds) pp. 105-139. Academic Press: London.