appendix interna

appendix interna
A slender rodlike lappet on the mesial ,argin of the endopod of the second through fifth pleopods of shrimps; it is provided with terminal hooked setae by which the two pleopods of a pair must be joined mesially. (Pl. appendices internae) [Chace and Hobbs, 1969].
A slender rodlike structure on the mesial border of the endopod of the second through fifth pleopods of shrimps; terminal and/or subterminal hooked setae allow the mesial joining of two pleopods of a pair [Hobbs, Hobbs, and Daniel 1977].
Medial projection stemming from pleopodal endopods, serving to unite members of each pair of pleopods. (Syn. stylamblys) [Moore and McCormick, 1969].
Median process of pleopodal endopod uniting members of each pair. (Syn. stylamblys) [McLaughlin, 1980].
Slender lappet, sometimes rodlike, at the mesial base of the endopod of the second pleopod (dorsal to the appendix masculina) of many males. (Pl. appendices internae) [Perez Farfante and Kensley, 1997].
Slender rodlike flap on inner margin of endopod of the second to fifth pleopods of shrimp. (Pl. appendices internae) [Butler, T.H.].
Slender, rodlike structure on mesial border of endopod of second through fifth pleopods of shrimp [Hobbs and Jass, 1988].
Small branch on inner margin of pleopod 2, triangular or rod-like, usually with clusters of hooks to attach to its pair. (Pl. appendices internae) [Poore, 2004].
Small separate branch on mesial side of pleopodal endopodite, usually tipped with hooks which interlock with opposite member in swimming [Williams, 1984].
(Order Decapoda):
Projection of inner branch (endopod) of each pleopod; serves to hook pleopod to its opposite member (for swimming). (Syn. stylamblys) [Stachowitsch, 1992].
(Order Stomatopoda):
Projection of inner branch (endopod) of each pleopod. Bears hooks (retinacula) and, in first pleopod pair of male, hook-shaped and tubular processes (petasma). (Syn. stylamblys) [Stachowitsch, 1992].
(Order Leptostraca):
In each of the four well-developed anterior pairs of pleopods, medially (inwardly) directed process at base of endopod. Serves to link pleopods together for swimming [Stachowitsch, 1992].
(Order Euphausiacea):
Medially (inwardly) directed process of each pleopod. Serves to link pleopods of each somite together for swimming [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • appendix interna — (ARTHROPODA: Crustacea) In Malacostraca, the median process of the pleopodal endopod uniting members of each pair; stylamblys …   Dictionary of invertebrate zoology

  • appendix masculina — A lappet inserted between the appendix interna and the mesial margin of the second pleopod of most male shrimps. The presence or absence of an appendix masculina is the easiest way to distinguish males and females in most caridean shrimps, and in …   Crustacea glossary

  • pleopod — An appendage attached to an abdominal segment [Ingle, 1983]. An appendage of any one of the first five abdominal segments [Warner, 1977]. Biramous, often natatory, appendage of pleon [Holdich and Jones, 1983]. Distinctive, usually biramous,… …   Crustacea glossary

  • stylamblys — See: appendix interna [Martin, 2005]. See: appendix interna [McLaughlin, 1980]. Specialised second endopodal article of pleopod 2 of female Palinura [Poore, 2004]. (Order Stomatopoda): Appendix interna [Stachowitsch, 1992] …   Crustacea glossary

  • Neocaridina — denticulata Systematik Ordnung: Zehnfußkrebse (Decapoda) …   Deutsch Wikipedia

  • retinaculum — Small hook at tip of appendices internae (e.g., Caridea), one of many serving to join left and right pleopods together. (Pl. retinacula) (Syn. cincinnulus) [Moore and McCormick, 1969]. Small hook at tip of appendix interna, one of many serving to …   Crustacea glossary

  • retinaculum — n.; pl. la [L. retinaculum, holdfast] 1. A connecting or retaining band. 2. (ACANTHOCEPHALA) Muscular sheath of a nerve. 3. (ARTHROPODA: Crustacea) In Malacostraca, small hook at the tip of the appendix interna, interlocking the right and left… …   Dictionary of invertebrate zoology

  • stylamblys — see appendix interna …   Dictionary of invertebrate zoology

  • endopod — ( ) [Holthuis, 1993]. Schematic drawing of a thoracic leg. [Holthuis, 1993] Inner branch of biramous appendage, especially one arising from protopodite of pleopod [Butler, T.H.]. Inner of two branches of biramous limb, comprising ischium through… …   Crustacea glossary

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