Genus Haplorhiza Haeckel, 1880

Museums

Regional Maps

• Haplorhiza Haeckel, E. 1880. System der Acraspeden. Zweite Halfte des System der Medusen. Jena : G. Fischer. [604].

Distribution

States

Northern Territory, Tasmania, Victoria

IBRA and IMCRA regions

IMCRA

Timor Transition (1), Northern Shelf Province (25), Northwest Shelf Transition (26), Western Bass Strait Shelf Transition (34), Bass Strait Shelf Province (35), Southeast Shelf Transition (37)

Diagnosis

Versurigidae with 8 simple, free, neither branched nor fork-shaped, mouth-arms, which do not coalesce with their lateral walls. With a unitary subgenital cavity instead of 4 cavities as in Archirhiza, cruciform in shape and formed by the fusion of the 4 primitive interradial genital sacs and the breaking down of the walls in the fused regions, thus forming a cross-shaped cavity beneath the stomach.

Diagnosis References

Mayer, A.G. 1910. Medusae of the World. Vol. 1 and 2, The Hydromedusae. Vol. 3, The Scyphomedusae. Washington, D.C. : Carnegie Institution 735 pp., 76 pls. [reprinted by A. Asher & Co., 1977] [713]

Von Lendenfeld, R. 1884. The scyphomedusae of the southern hemisphere. Part III. - Conclusion. IV. Ordo - Discomedusae. Proceedings of the Linnean Society of New South Wales 9: 259–306 [293]

Notes

Haeckel (1880: 604) proposed the genus Haplorhiza for two new species, H. simplex and H. punctata; both were regarded as valid by von Lendenfeld (1884d, as Hoplorhiza), but dismissed by Mayer (1910) and ignored by Stiansy (1921) and Kramp (1961b). Neither has ever been reported since the original collections.

History of changes