carapace spine

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 antennal and pterygostomial spines.
(c) hepatic. Spine in hepatic region of carapace below lower branch of cervical groove and behind it.
(d) infraorbital. Spine on lower angle of orbit.
(e) postorbital. Spine at moderate distance behind middle of orbit.
(f) postrostral. Dorsomedian spine immediately behind rostrum.
(g) pterygostomial. Spine on anterolateral angle of carapace.
(h) suborbital. Spine at moderate distance below middle of orbit and slightly beneath it.
(i) supraorbital. Spine at moderate distance obliquely behind and above orbit (may be placed at postorbital carina) [Moore and McCormick, 1969].
(Order Cladocera):
Large, posteriorly directed, spine-like structure formed by posterodorsal extension of carapace. Relative length may be of taxonomic importance. (Syn. apical spine, posterior spine, shell spine) [Stachowitsch, 1992].
(Order Decapoda):
Sharp projection from carapace. See: carapace spines [McLaughlin, 1980].

Crustacea glossary. . 2011.

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  • 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 — ( ) [Baba, 2005]. Entire animal, right appendages omitted, dorsal view, based on Munida. [Baba, 2005] ( ) [Baba, 2005]. Carapace, spines, based on Munida. [Baba, 2005] Head Shield cuticular structure arising from posterior margin of cephalon,… …   Crustacea glossary

  • carapace carina — Narrow ridge on surface of carapace (cf. decapod carapace and stomatopod integumental ornamentation) [McLaughlin, 1980]. Narrow ridge variously located on surface of decapoda carapace named types: a) antennal. Narrow ridge extending backward from …   Crustacea glossary

  • carapace groove — Furrow on surface of decapod, generally dorsal named types: a) antennal. Furrow on carapace extending backward from vicinity of antennal spine. b) branchiocardiac. Oblique furrow approximately in middle of posterior half of each side of carapace …   Crustacea glossary

  • carapace grooves — (Order Decapoda): (a) antennal. Extending posteriorly from vicinity of antennal spine. (b) branchiocardiac. Oblique groove approximately in middle of posterior half on each side of carapace, separating branchial and cardiac regions and reaching… …   Crustacea glossary

  • carapace tooth — Generally blunt projection of carapace, often broader than spine. See: carapace teeth, stomatopod integumental ornamentation [McLaughlin, 1980]. Small sharp spinous projection in varied locations named types: (a) cardiac. Tooth on mid line of… …   Crustacea glossary

  • carapace carinae — (Order Decapoda): (a) antennal. Extending posteriorly from antennal spine. (b) branchial. Extending posteriorly from orbit over branchial region. (c) branchiocardiac. Dividing branchial from cardiac region. (d) gastroorbital. Extending… …   Crustacea glossary

  • carapace tooth — (ARTHROPODA: Insecta) Various blunt or small sharp spinous projections on a carapace, often broader than a spine …   Dictionary of invertebrate zoology

  • 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

  • antennal spine — See: carapace spine (a) [Martin, 2005]. See: carapace spines (a) [McLaughlin, 1980]. ( ) [Baba, 2005]. Anterior part of carapace, including ocular peduncles, based on Munidopsis. [Baba, 2005] A short spine usually present on or near the anterior… …   Crustacea glossary

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