epitheca

epitheca
The upper half of the theca of a thecate protist such as a diatom or dinoflagellate.

The frustules structure is usually composed of two overlapping sections, known as valves. The upper valve is termed the epitheca and is slightly larger and overlaps the lower valve, the hypotheca.


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  • Epitheca — Ep i*the ca, n. [NL., fr. Gr. epi upon + ? a case, box, fr. ? to place.] (Zo[ o]l.) A continuous and, usually, structureless layer which covers more or less of the exterior of many corals. [1913 Webster] …   The Collaborative International Dictionary of English

  • Epitheca bimaculata — Epitheca bimaculata …   Wikipédia en Français

  • Epitheca bimaculata — Zweifleck Zweifleck (Epitheca bimaculata) Systematik Ordnung: Großlibellen (Anisoptera) …   Deutsch Wikipedia

  • epitheca — n. [Gr. epi, upon; theke, case] (CNIDARIA) The external layer surrounding the theca in many corals …   Dictionary of invertebrate zoology

  • epitheca — (ep ī the kah) The larger of two halves of a diatom frustule (shell) …   Dictionary of microbiology

  • epitheca — epi·theca …   English syllables

  • epitheca — …   Useful english dictionary

  • Zweiflecke — Zweifleck (Epitheca bimaculata), kurz nach der Imaginalhäutung Systematik Unterklasse: Fluginsekten (Pterygota) …   Deutsch Wikipedia

  • Zweiflecklibelle — Zweifleck Zweifleck (Epitheca bimaculata) Systematik Ordnung: Großlibellen (Anisoptera) …   Deutsch Wikipedia

  • Common Baskettail — male Scientific classification Kingdom: Animalia …   Wikipedia

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