Oswaldella Stechow, 1919

Molinero, A. González & Peña Cantero, A. L., 2015, SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus, Zootaxa 4052 (4), pp. 401-441 : 402

publication ID

https://doi.org/ 10.11646/zootaxa.4052.4.1

publication LSID

lsid:zoobank.org:pub:47EF6E9D-9064-4899-B3DD-276FF7C969EB

DOI

https://doi.org/10.5281/zenodo.6107435

persistent identifier

https://treatment.plazi.org/id/03C287C6-280A-7C17-D4F4-89962D427D83

treatment provided by

Plazi

scientific name

Oswaldella Stechow, 1919
status

 

Oswaldella Stechow, 1919 View in CoL

Oswaldella Stechow, 1919: 853 View in CoL ; type, by original designation: Schizotricha bifurca Hartlaub, 1904 .

Diagnosis (modified from Peña Cantero & Vervoort 2004). Feather-like, colonial hydroids with branched or unbranched stem, divided into internodes or undivided, mono- or polysiphonic, usually with two longitudinal rows of apophyses (three in O. laertesi Peña Cantero, 2007 ), alternately arranged in one plane and supporting hydrocladia. Cauline apophyses with varied number of nematophores on upper surface, emerging through raised, perforated part of periderm (‘mamelon’) and/or through simple axillary holes in perisarc, with or without reduced nematothecae. Stem without nematophores. Hydrocladia typically branched. Degree of branching varied. Hydrocladia homomerously divided into hydrothecate internodes (except for Oswaldella herwigi El Beshbeeshy, 2011 ), each with one hydrotheca and two mesial nematophores: first one placed behind free adcauline hydrothecal wall and emerging through simple hole in perisarc; second nematophore situated below hydrotheca at a more or less distinct elevation of internode and with or without rudimentary, scale-shaped nematotheca. Hydrothecae cupshaped to tubular. Colonies dioecious, with sexual dimorphism. Gonothecae inserting on hydrocladia below hydrotheca, next to mesial inferior nematophore. Cnidome composed of microbasic mastigophores, typically in two size classes.

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Kirchenpaueriidae

Loc

Oswaldella Stechow, 1919

Molinero, A. González & Peña Cantero, A. L. 2015
2015
Loc

Oswaldella

Stechow 1919: 853
1919
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