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Topic: Orthognatha


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  Tarantula Ring and Pendant
Members of the second suborder, Orthognatha, or mygalomorph spiders, tarantulas are found all over the tropical and subtropical world.
Tarantula jaws move vertically and are used to soften or "chew" their prey, as well as to dig burrows in which they live.
Though tarantulas do not pose any significant danger to humans, it's hard to convince anybody of this when one crawls out of a bunch of bananas in the supermarket.
www.marchenoir.com /gtsra.html   (94 words)

  
 Tarantula - Multimedia - MSN Encarta
All tarantulas are members of the class Arachnida, which includes scorpions, ticks, mites, and spiders.
Tarantulas belong to the suborder Orthognatha, which includes spiders classified as straight-jawed forms, such as the trapdoor spider.
Suborder designation in spiders is based on the structure and orientation of the mouthparts, the body shape, and the presence and development of the silk-producing organ.
uk.encarta.msn.com /media_461555470/Tarantula.html   (67 words)

  
 Yeni Sayfa 4
Spiders, which live long time generally inhabit in tropical regions.
Spider is divided into two suborders as Orthognatha and Labidognatha.
Spiders in Orthognatha have simple structures and survive in tropical and desert ecosystems.
www1.gantep.edu.tr /~varol/eng/genpremetin.htm   (5448 words)

  
 Minax Fågelspindlar - Klassificering
The order Araneae is divided into two suborders and the classification are determined of the structure of the chelicerae, and the number of booklungs.
The suborder Mygalomorphae, or Orthognatha, got two pairs of booklungs, includes 15 families and includes for example the trapdoor spiders in the family Ctenizidae, and Hexathelidae - funnelweb spiders, and the large tarantulas in the Theraposidae family.
The mygalomorphs jaws are located paralell to the body and the spider must raise the front body to be able to inject its prey.
www.minaxtarantulas.net /biologi/klass_e.html   (315 words)

  
 How far up north? [Archive] - Arachnoboards
Just one genus belonging to the family Atypidae is found in Britain, and it is represented by this species alone.
The name of the suborder Orthognatha means ‘straight jawed’.
This name refers to the chelicerae, a pair of appendages on the ‘head’ of the spider which are used to kill prey.
arachnoboards.com /ab/archive/index.php/t-5070.html   (896 words)

  
 BAS Bulletin Articles - P
Punzo, F. Effects of hunger on prey capture and ingestion in Dugesiella echina Chamberlin (Orthognatha, Theraphosidae).
Punzo, F. Intraspecific variation in responses to thermal stress in the tarantula, Dugesiella echina Chamberlin (Orthognatha, Theraphosidae).
Punzo, F. & Henderson, L. Aspects of the natural history and behavioural ecology of the tarantula spider Aphonopelma hentzi (Girard,1854) (Orthognatha, Theraphosidae).
www.britishspiders.org.uk /bultn/p.html   (833 words)

  
 What are Tarantulas?
Tarantulas are in the order Aranae, a group of animals including all the kinds of spiders.
Instead, a tarantula's fangs are like the tusks of a walrus, and they have to raise their whole body to get their fangs ready to bite their prey.
Tarantulas and other mygalomorphs (in the suborder Orthognatha) all have two pairs of book lungs.
circuschimera.com /cast_pages/Spiders_and_Snakes/popone.htm   (206 words)

  
 The Evolution of Web Usage in Spiders
The order Araneae (spiders) is traditionally divided into three divisions; the Mesothelae (also known as the Liphistomorpha), the Mygalomorphae, tarantulas and relatives (also called the Orthognatha or the Theraphosomorphae) and the Araneomorphae, the rest of the spiders (also known as the Labidognatha).
However it is possible the Mesothelea are really a part of the Mygalomorphae, this would leave us with only two groups; the primitive Tarantula types (Mygalomorphae) and the more advanced Aranaeid type (Araneomorphae).
It is not expensive and should be thoroughly enjoyable, so if you like it please tell people about it, or better still give it to someone as a present for Christmas of a birthday.
www.earthlife.net /chelicerata/web-evolve.html   (2775 words)

  
 Common Missouri Spiders
Size is helpful when determining the two suborders of spiders, though other characteristics are more diagnostic.
The orthognatha, which includes the tarantulas and trapdoor spiders, are generally large, with stout bodies, stout legs, and jaws that move vertically.
They also tend to be long-lived, some up to 25 years.
mdc.mo.gov /nathis/arthopo/mospider   (1071 words)

  
 Spyda-webb.co.uk - What is a spider? - Your ultimate resource for all things with eight legs!
These spiders are very rare and found only in eastern Asia.
The members of the second suborder, orthognatha, or mygalmorph spiders, include the tarantulas of north america.
They are also primitive but are found all over the world, especially in tropical and subtropical habitats.
homepage.ntlworld.com /spydawebb/about.html   (632 words)

  
 Minibeast Profile 01: Spiders   (Site not responding. Last check: 2007-09-21)
Spiders are classified (divided into groups) based on various body characteristics.
There are three large groupings of spiders (known as suborders): the primitive spiders (Mesothelae), the tarantulas and relatives (Orthognatha), and the true spiders (Labidognatha).
The true spiders are the most commonly encountered, and are represented by over two dozen families including the orb weavers, wolf spiders, jumping spiders, funnel web spiders, crab spiders, and widow spiders.
members.aol.com /Yesedu/MBP01.html   (809 words)

  
 Araneomorphae - Wikipedia, the free encyclopedia
This Atrax robustus (Atypidae) is making a threat display, and by so doing shows very clearly the orientation of its chelicerae, which go up and down, parallel to the long axis of the spider's body.
So it stands as a representative of the suborder Orthognatha (Mygalomorphae) and not Araneomorphae.
Click on this image of a Metellina sp.
en.wikipedia.org /wiki/Araneomorph   (376 words)

  
 eMedicine - Spider Envenomations, Tarantula : Article by Scott D Fell, DO, FAAEM
Synonyms and related keywords: spider bite, hairy spider, poisonous spider, Theraphosidae, Orthognatha, Theraphosa blondi, Aphonopelma, Grammastola, arachnophobia
Emergency physicians are increasingly likely to encounter patients who have had tarantula contact as the popularity of tarantulas as pets is increasing.
Tarantulas belong to the suborder Orthognatha and the family Theraphosidae.
www.emedicine.com /EMERG/topic550.htm   (2468 words)

  
 Spiders and Their Kin:Levi, Herbert Walter; Levi, Lorna R.; Zim, Herbert Spencer; Strekalovsky, Nicholas ...
Spiders: 4 pairs of legs, spinnerets; cephalothorax and abdomen joined by narrow waist; no antennae
Mygalomorph Spiders, Orthognatha: chelicerae (jaws) attached in front of head, open forward
True Spiders, Labidognatha: chelicerae attached below head, open to sides
www.ecampus.com /bk_detail.asp?isbn=1582381569&referrer=yah04   (168 words)

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