entomodont hinge
Ephippium
A portion of the shed carapace that functions as an egg case in some cladoceran taxa [Brusca and Brusca, 2002].
Semielliptical modification of cuticle in dorsal region of carapace valves forming encasement for eggs, capable of withstanding dessication after being shed (Cladocera). (Pl. ephippia) [McLaughlin, 1980].
Semielliptical part of dorsal region in each valve of cladoceran branchiopods altered to form encasement for eggs, shed as unit and constructed in manner that facilitates ultimate hatching after desiccation (especially characteristic of Daphniidae). (Pl. ephippia) [Moore and McCormick, 1969].
(Order Cladocera):
Egg case formed by walls of brood chamber. Typically separated from rest of carapace during molting. (knobby and with two eggs, reticulated and with single egg) [Stachowitsch, 1992].

Crustacea glossary. . 2011.

Look at other dictionaries:

  • hinge — (Class Ostracoda): Complementary interlocking articulatory structures on inner dorsal margin of valves. See: ADont hinge, merodont hinge, lophodont hinge, pentodont hinge, holomerodont hinge, antimerodont hinge, entomodont hinge, gongylodont… …   Crustacea glossary

  • amphidont hinge — (Class Ostracoda): A modified entomodont hinge in which the four elements are well differentiated (Families Hemicytheridae, Trachyleberididae) [Cohen, Peterson, and Maddocks, in press] …   Crustacea glossary

  • schizodont hinge — (Class Ostracoda): Entomodont hinge in which the anterior and anteromedian elements are bifid, and the posterior element is bifid or crenulate (Family Schizocytheridae only) [Cohen, Peterson, and Maddocks, in press] …   Crustacea glossary

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