Amphinema Haeckel, 1879

Schuchert, Peter & Collins, Richard, 2021, Hydromedusae observed during night dives in the Gulf Stream, Revue suisse de Zoologie 128 (2), pp. 237-356 : 244

publication ID

https://doi.org/ 10.35929/RSZ.0049

publication LSID

lsid:zoobank.org:pub:8382D1CA-7C0E-4B1C-9591-4CEAA2F296FB

DOI

https://doi.org/10.5281/zenodo.5639962

persistent identifier

https://treatment.plazi.org/id/D0118A7C-5B04-001C-FED4-FEB6FF277BB1

treatment provided by

Felipe

scientific name

Amphinema Haeckel, 1879
status

 

Genus Amphinema Haeckel, 1879 View in CoL View at ENA

Synonymy: See Schuchert (2007).

Diagnosis: Medusa with two long opposite tentacles; with or without ocelli; gastric peduncle absent; mostly with a considerable apical projection; with or without additional marginal small cirri or marginal rudimentary bulbs; with or without mesenteries; four simple oral lips, not or not much crenulated. Gonads on manubrium in adradial or interradial position, occasionally extending to the radial canals.

Hydroid colonies usually stolonal [except for one species of uncertain affinity, Amphinema biscayana ( Browne, 1907) ], hydranths with a well developed caulus, caulus longer than hydranth, covered by perisarc; hydranths without pseudohydrotheca, spindle-shaped, conical hypostome, one whorl of filiform, amphicoronate tentacles. Polyps bend over when disturbed. Gonophores arise either from cauli, stolons or both, released as free medusae.

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