Arachnida

Arachnida

(Science: zoology) One of the classes of arthropoda.

They have four pairs of legs, no antennae nor wings, a pair of mandibles, and one pair of maxillae or palpi. The head is usually consolidated with the thorax. The respiration is either by trancheae or by pulmonary sacs, or by both. The class includes three principal orders: araneina, or spiders; arthrogastra, including scorpions, etc.; and Acarina, or mites and ticks.

Origin: NL, fr. Gr. Spider.


Please contribute to this project, if you have more information about this term feel free to edit this page



This page was last modified on 3 October 2005, at 21:16. This page has been accessed 5,138 times. 
What links here | Related changes | Permanent link