pterygostomial spine

pterygostomial spine
(Order Decapoda):
See: carapace spines (g) [McLaughlin, 1980].
(Order Decapoda):
In shrimp-like (natantian) decapod, anteriorly directed, spine-like projection located below branchiostegal spine on anterolateral corner or carapace [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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  • pterygostomial spine — (ARTHROPODA: Crustacea) In Decapoda, a spine on the anterolateral angle …   Dictionary of invertebrate zoology

  • pterygostomial region — Anteroventral region of carapace (anterior part of branchiostegite of Caridea) or ventral region of carapace (of Brachyura); bearing pterygostomial spine at anteroventral angle (in Caridea and Dendrobranchiata) [Poore, 2004]. (Order Decapoda):… …   Crustacea glossary

  • spine — ( ) [Baba, 2005]. Carapace, spines, based on Munida. [Baba, 2005] ( ) [Baba, 2005]. Anterior part of carapace, including ocular peduncles, based on Munidopsis. [Baba, 2005] A cuticular outgrowth without a recognizable basal articulation [Ingle,… …   Crustacea glossary

  • carapace spine — Sharp projection of carapace important for classification chief types: (a) antennal. Spine on front margin of carapace slightly below orbit. (b) branchiostegal. Spine on front margin of carapace or slightly behind it about halfway between… …   Crustacea glossary

  • branchiostegal spine — See: carapace spine (b) [Martin, 2005]. See: carapace spines (b) [McLaughlin, 1980]. A short spine located on or near the anterior margin of the carapace, ventral to the antennal spine in the shrimps; in crayfishes, immediately ventral to the… …   Crustacea glossary

  • branchiostegal spine — (ARTHROPODA: Crustacea) In Decapoda, a spine on the carapace between the antennal and pterygostomial spines …   Dictionary of invertebrate zoology

  • antennal region — See: carapace region (a) [Martin, 2005]. See: carapace regions (a) [McLaughlin, 1980]. Area on lateral surface of the carapace posterior to and encompassing antennal spine [Butler, T.H.]. Area on the lateral face of the carapace posterior to and… …   Crustacea glossary

  • hepatic region — See: carapace region g [Martin, 2005]. Paired anterolateral areas of the carapace bounded anteriorly by the antennal region, posteriorly by the branchial region, and mesially by the gastric region [Perez Farfante and Kensley, 1997]. Paired… …   Crustacea glossary

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