Home Forum Dictionary Articles Tutorials Books Directory Share your work


Edit page | Page history | Printable version

Dictionary » A » Arachnida

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



Results from our forum


Why do you keep talking about species

... Kingdon: Animalia Phylum: Annelida Worms Class: Polychaeta Polychaetes Phylum: Arthropoda Insects, Spiders, Millipedes, Crabs, Beetles Class: Arachnida Spiders, Scorpions Class: Insecta Ants, Bees Class: Malacostraca Crabs, Lobsters, Shrimps, Woodlice Class: Maxillopoda Barnacles Phylum: Chordata ...

See entire post
by gamila
Mon Jun 29, 2009 5:35 pm
 
Forum: Evolution
Topic: Why do you keep talking about species
Replies: 20
Views: 588

DNA replication, Cell division and Evolution

... Kingdon: Animalia Phylum: Annelida Worms Class: Polychaeta Polychaetes Phylum: Arthropoda Insects, Spiders, Millipedes, Crabs, Beetles Class: Arachnida Spiders, Scorpions Class: Insecta Ants, Bees Class: Malacostraca Crabs, Lobsters, Shrimps, Woodlice Class: Maxillopoda Barnacles Phylum: Chordata ...

See entire post
by gamila
Sun Jun 07, 2009 7:05 am
 
Forum: Evolution
Topic: DNA replication, Cell division and Evolution
Replies: 16
Views: 437

Re: What's polygenic inheritance

... and am becoming quickly impressed. I am an undergrad at Salt Lake Community College in Utah studying ecology and systematics of various groups of Arachnida (i.e. evolutionary ecology). I am new to phylogenetic theory and other such aspects of our field and feel this forum will be a valuable asset. ...

See entire post
by Zach
Wed Dec 24, 2008 10:26 pm
 
Forum: Genetics
Topic: What's polygenic inheritance
Replies: 4
Views: 1839

Like this?

... for the first 4 in the list :D Black Widow Spider *common name Latrodectus mactans* Species Latrodectus*Genus Theridiidae*Family Araneae* Order Arachnida*Class Is this correct?

See entire post
by vsevilla
Fri Jan 20, 2006 7:20 pm
 
Forum: General Discussion
Topic: Please Help--Classifying Organism
Replies: 18
Views: 2009

Moluscus and Arthropods

... mollusca is the second largest phylum.........arthropoda include subphylum trilobita subphylum chelicerata class merostomata-horseshoe crabs class arachnida - spiders,scorpions,ect. subphylum crustacea-crabs,shrimp,lobster subphylum uniramia class chilopoda-centipede class diplopoda-millipede class ...

See entire post
by PetaPal
Thu Oct 27, 2005 3:12 pm
 
Forum: Zoology Discussion
Topic: Moluscus and Arthropods
Replies: 6
Views: 5984
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 1,235 times. 
What links here | Related changes | Permanent link