Difference between revisions of "rostrum"
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|lexical category=noun; plural <b>-tra</b> | |lexical category=noun; plural <b>-tra</b> | ||
|etymology=Latin <i>rostrum</i>, beak | |etymology=Latin <i>rostrum</i>, beak | ||
| − | |definition=1. A beak or snout. See also [[rostellum]]. | + | |definition=1. A beak or [[snout]]. See also [[rostellum]]. |
| − | 2. ([[Arthropoda]]: Chelicerata) The labrum of spiders. | + | 2. ([[Arthropoda]]: [[Chelicerata]]) The [[labrum]] of spiders. |
| − | 3. ([[Arthropoda]]: Crustacea) The median pointed process at the end of the cephalothorax. <i>a.</i> In thoracic barnacles, a valve between the lateral and opposite carina at the basiscutal end of the capitulum; simple and bearing alae in many balanomorphs, but compound and overlapping the laterals in higher balanomorphs. See also [[compound rostrum]]. | + | 3. ([[Arthropoda]]: [[Crustacea]]) The [[median]] pointed [[process]] at the end of the [[cephalothorax]]. <i>a.</i> In [[thoracic]] barnacles, a valve between the [[lateral]] and opposite [[carina]] at the basiscutal end of the [[capitulum]]; simple and bearing [[alae]] in many balanomorphs, but compound and overlapping the laterals in higher balanomorphs. See also [[compound rostrum]]. |
| − | 4. ([[Arthropoda]]: [[Insecta]]) <i>a.</i> In Hemiptera, the beak. <i>b.</i> In Coleoptera scarab beetles, a rigid, ventral extension of the paramere. | + | 4. ([[Arthropoda]]: [[Insecta]]) <i>a.</i> In Hemiptera, the beak. <i>b.</i> In Coleoptera scarab beetles, a rigid, [[ventral]] extension of the paramere. |
| − | 5. ([[Brachiopoda]]) Inner elevation of the brachial valve; a pair of club shaped elevations for muscle attachment for the brachial protractor muscles. | + | 5. ([[Brachiopoda]]) Inner elevation of the [[brachial valve]]; a pair of [[club shaped]] elevations for muscle attachment for the brachial [[protractor muscles]]. |
| − | 6. ([[Mollusca]]: Cephalopoda) <i>a.</i> The anteriormost point of the upper and lower mandibles | + | 6. ([[Mollusca]]: [[Cephalopoda]]) <i>a.</i> The anteriormost point of the upper and lower mandibles |
| − | |see also=[[beak]]. <i>b.</i> The spine anchored on the posterior end of a cuttle bone and some pens. 7. (NEMATA: Secernentea) In Aphelenchida males, the beak-like projection ventrad near the proximal end of the spicule, joining the dorsal and ventral spicular shafts. | + | |see also=[[beak]]. <i>b.</i> The [[spine]] anchored on the [[posterior]] end of a [[cuttle bone]] and some pens. 7. (NEMATA: [[Secernentea]]) In Aphelenchida males, the beak-like projection [[ventrad]] near the [[proximal]] end of the [[spicule]], joining the [[dorsal]] and [[ventral]] spicular shafts. |
| + | }} | ||
[[Category:Disambiguation page necessary]] | [[Category:Disambiguation page necessary]] | ||
| + | {{Concept scheme relation | ||
| + | |scheme=Dictionary of Invertebrate Zoology | ||
}} | }} | ||
Latest revision as of 23:41, 13 September 2013
rostrum (noun; plural -tra; Latin rostrum, beak): 1. A beak or snout. See also rostellum.2. (Arthropoda: Chelicerata) The labrum of spiders.
3. (Arthropoda: Crustacea) The median pointed process at the end of the cephalothorax. a. In thoracic barnacles, a valve between the lateral and opposite carina at the basiscutal end of the capitulum; simple and bearing alae in many balanomorphs, but compound and overlapping the laterals in higher balanomorphs. See also compound rostrum.
4. (Arthropoda: Insecta) a. In Hemiptera, the beak. b. In Coleoptera scarab beetles, a rigid, ventral extension of the paramere.
5. (Brachiopoda) Inner elevation of the brachial valve; a pair of club shaped elevations for muscle attachment for the brachial protractor muscles.
6. (Mollusca: Cephalopoda) a. The anteriormost point of the upper and lower mandibles
See also: beak. b. The spine anchored on the posterior end of a cuttle bone and some pens. 7. (NEMATA: Secernentea) In Aphelenchida males, the beak-like projection ventrad near the proximal end of the spicule, joining the dorsal and ventral spicular shafts.
