buccal frame

buccal frame
structure of brachyuran decapods enclosing mouth parts, its sides formed by free anterolateral edges of carapace, its front delimited by epistome, and commonly closed by operculiform third maxillipeds [Moore and McCormick, 1969].
(Order Decapoda):
In crab-like (brachyuran) decapod, well-defined, frame-like depression on underside of head; contains mouthparts (labrum, mandibles, maxillules, maxillae, maxillipeds, labium) and may be covered by expanded (operculiform) maxillipeds. (quadrate, triangular). See: endostome [Stachowitsch, 1992].
(Infraorder Brachyura):
Structural region of cephalon enclosing mouthparts [McLaughlin, 1980].

Crustacea glossary. . 2011.

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  • buccal cavern — Space, especially in crabs, enclosing the mouthparts and more or less covered by third maxillipeds, defined anteriorly by epistome and laterally by pterygostomial region, sometimes by ridges. (Syn. buccal frame) [Poore, 2004] …   Crustacea glossary

  • buccal cavity — Cavity on ventral surface of body in which mouth parts are situated; bounded anteriorly by epistome, laterally by free edges of carapace. Within this frame lie the mouth parts, which in most Brachyura are covered by operculiform third maxillipeds …   Crustacea glossary

  • endostome — Palate like part of buccal frame in some brachyuran decapods. (Syn. palate) [Moore and McCormick, 1969]. Part of epistome forming palate in brachyurans and usually separated from epistome proper by transverse ridge [Williams, 1984]. Plate inside… …   Crustacea glossary

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