carapace costae
Closely spaced radial ridges, grading from fine to coarse, that become obsolete near umbo and do not cross it (=radial lirae, radial riblets, accessory ribs) (e.g., Conchostraca, especially Estheriellidae, in which valves generally have more than 5 costae) [Moore and McCormick, 1969].
(Order Diplostraca):
Closely spaced radial ridges, grading from fine to coarse, not crossing to umbo. (Syn. radial lirae) [McLaughlin, 1980].

Crustacea glossary. . 2011.

Look at other dictionaries:

  • carapace costae — (ARTHROPODA: Crustacea) Fine to coarse closely spaced radial ridges, that do not cross the umbo; radial lirae …   Dictionary of invertebrate zoology

  • conchostracan carapace interval — (ARTHROPODA: Crustacea) Any space between two ribs, costae, or costellae of the conchostracan carapace …   Dictionary of invertebrate zoology

  • conchostracan carapace interval — Space between any 2 ribs, costae, or costellae on conchostracan carapace [Moore and McCormick, 1969] …   Crustacea glossary

  • conchostracan carapace ribs — Strong radial ridges radiating from and across umbo of conchostracan carapace, with intervals of variable width between any pair and commonly nodose at intersections of growth lines; may be partial or embryonic in expression; synonyms include… …   Crustacea glossary

  • radial lirae — see carapace costae …   Dictionary of invertebrate zoology

  • radial lirae — See: carapace costae [McLaughlin, 1980] …   Crustacea glossary

  • Rib — This article is about the part of the skeleton. For other uses, see Rib (disambiguation). Single human rib detail The …   Wikipedia

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