radiolaria - rads_cat - Lophophaena clevei radiolaria - rads_cat - Lophophaena clevei

CATALOG OF ORIGINAL DESCRIPTIONS: Lophophaena clevei Petrushevskaya 1971

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: rads_cat -> L -> Lophophaena -> Lophophaena clevei
Other pages this level: L. amictoria, L. amphora, L. apiculata, L. arie, L. auriculaleporis, L. capito, L. circumtexta, L. clevei, L. echinocephala, L. foveolata, L. galeaorci, L. galeata, L. gibba, L. globeacuculla, L. kamikurii, L. kojmatensis, L. larvata, L. leberu, L. liothorax, L. lynx, L. macrencephala, L. nadezdae, L. neuma> >>

Lophophaena clevei

Citation: Lophophaena clevei Petrushevskaya 1971
taxonomic rank: species
Described on page(s) : p.107
Type specimens: fig. 57, i
Type repository: Holotype in the preparation No. 1, F 42, 2, Marine Dept., Zoological Institute, Acad. of Sc., St Petersburg, Russia
Family (traditional): Plagiacanthidae
Family (modern): Lophophaenidae

Current identification/main database link: Lophophaena clevei Petrushevskaya 1971


Original Description

Lophophaena which is very close to the Paleogene representatives of the genus (fig. 56, XIII). The lateral lobes are clearly expressed as "neck" inflations. The lower part of the II segment is cylindrical. The ratio of the widths of segments I and II equals 1:1.3. The rounded, densely spaced pores on both segments are of an equal size. Their diameter does not exceed more than 1.5-3 times the width of the septa between them. Spines D, Lr and Ll yield considerably long terminal feet, whereas the secondary apophyses of the margin of the shell (radial appendages) are not expressed. There are no long filarnentous spines on the I segment, but merely short spines instead, which are specifically developed in the area of the "neck". These short spines can merge with the apophyses and form an outer net which envelopes the "neck". (In Russian. Translation via W.R. Riedel)

Size:
(Based on 12 specimens) Length of I segment (without "neck") approximately 30µm, width 30-35µm; length of II segment 60µm and over, width 50-55µm.

Extra details from original publication
Distinguishing characters: Differs from Lithomelissa laticeps, described by Jørgensen, in the distinctly developed "neck", which is separated from the thorax by arches cp and pp. The species has been named in honour of P. T. Cleve, the first scientist to discover this species.

Editors' Notes
Bipolar: Nowegian Sea, Arctic and Antarctic.

References:

Petrushevskaya, M. G. (1971d). Radiolyarii Nasselaria v planktone Mirovogo okeana [Nasellarian radiolarians in the plankton of the world ocean]. Trudy Zoologicheskogo Instituta Academiya Nauk SSSR. 9(17): 1-294. gs O


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Lophophaena clevei compiled by the radiolaria@mikrotax project team viewed: 25-5-2024

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