CATALOG OF ORIGINAL DESCRIPTIONS: Arachnocorys hexaptera Haeckel 1887

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 -> A -> Arachnocorys -> Arachnocorys hexaptera
Other pages this level: A. arachnodiscus, A. araneosa, A. circumtexta, A. discoides, A. dubius, A. enneaptera, A. fimbria, A. hexaptera, A. pentacantha, A. polyptera, A. simplex, A. trifida, A. umbellifera

Arachnocorys hexaptera

Citation: Arachnocorys hexaptera Haeckel 1887
Rank: species
Type repository: No information given
Described on page(s) : p.1265
Family (traditional): Plagiacanthidae
Family (modern): Lophophaenidae

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Current identification/main database link: Arachnocorallium hexaptera (Haeckel 1887)

Original Description
Cephalis large, subspherical, with irregular, polygonal pores, and numerous bristle-shaped spines twice the length; on the centre of the top a single larger vertical horn. Thorax flatly conical, with six strong and straight widely divergent ribs, which in the proximal half are separated by six large holes, in the distal half connected by a broad ring of irregular network. From each rib arises a perpendicular branch, and these branches are connected together, and with the spines of the cephalis, by arachnoidal network.

Cephalis 0.04 diameter, thorax 0.08 1ong, 0.24 broad.

Editors' Notes
Haeckel listed Arachnocorys hexaptera under the subgeneric name Arachnocorallium, but did not include the subgeneric name in the species name.
Hertwig, 1879, pl.8, fig.2a is questionably considered by Haeckel to be a juvenile form of this species.
Synonymized with Arachnocorallium calvata (Psilomelissa calvata Haeckel) by Petrushevskaya, 1971b, p.136], which also has extensive discussion of morphology and basis for synonyms. Note that if A. hexaptera is synonym of a species in different genus it cannot be base for Arachnocorallium.  Either different species in Arachnocorallium must be designated as base, or genera synonymized.-dbl


Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs

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


Arachnocorys hexaptera compiled by the radiolaria@mikrotax project team viewed: 18-4-2021

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