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Topic: Mesothelae


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In the News (Wed 15 Feb 12)

  
  ooBdoo
Mygalomorph and Mesothelae spiders have two pairs of book lungs filled with haemolymph, where openings on the ventral surface of the abdomen allow air to enter and diffuse oxygen.
Most of the early segmented fossil spiders belonged to the Mesothelae, a group of primitive spiders with the spinnerets placed underneath the middle of the abdomen, rather than at the end as in modern spiders (Opisthothelae).
Recent Mesothelae are characterized by the narrow sternum on the ventral side of the prosoma.
www.oobdoo.com /wikipedia/?title=Spider   (4872 words)

  
 Mesothelae dgun.org   (Site not responding. Last check: 2007-10-01)
Mesothelae is a suborder of spiders that include the families Liphistiidae, Arthrolycosidae, and Arthromygalidae.
More precisely, a spider is any member of the arachnid order Araneae, an order divided into three sub-orders in newer systems: the Mygalomorphae (the primitive spiders), the Araneomorphae (the modern spiders) and the Mesothelae, which contains the Family Liphistiidae, rarely seen burrowing spiders from Asia.
The study of spiders is known as arachnology, although it is often included in the more general term entomology.
mesothelae.en.dgun.org   (5038 words)

  
 The World Spider Catalog, V7.0 by N. I. Platnick © 2000 — 2006 AMNH
Taxonomic revision of the heptathelid spider (Araneae, Mesothelae) from Amami-ôshima Island, the Ryukyus.
Liphistiid spiders (Araneae, Mesothelae) from central and eastern Thailand.
On the spider genus Liphistius (Araneae: Mesothelae) in Thailand and Burma.
research.amnh.org /entomology/spiders/catalog/BIB7.html   (8386 words)

  
 Haupt, Joachim: The Mesothelae - a monograph of an exceptional group of spiders (Araneae: Mesothelae). ISBN ...
Haupt, Joachim: The Mesothelae - a monograph of an exceptional group of spiders (Araneae: Mesothelae).
Behaviour 54 7.1 Circadian and annual rhythms 54 7.2 Construction of the burrow 54 7.3 Capture of prey 55 7.4 Aggressive behaviour 56 7.5 Mating process 56 7.6 Sexual communication by means of pheromones and bioacoustics 59 7.7 Phylogenetic aspects of mating behaviour 60 8.
Phylogenetic discussion 89 11.1 "Mesothelae" and Mesothelae ­ the evaluation of fossil spiders 89 11.2 Phylogenetic analysis of Recent Mesothelae 89 12.
www.schweizerbart.de /pubs/books/es/zoologicah-169015400-desc.html   (403 words)

  
 NATURAL HISTORY MUSEUM OF THE CITY OF GENEVA: Scientific department, Arthropodology and Entomology I, Staff
Research topics: taxonomy, biogeography and biology of primitive spiders (especially Mesothelae, Mygalomorphae and Tetrablemmidae) and harvestmen (especially Oncopodidae) of Southeast Asia.
ONO, H. Liphistiid spiders (Araneae, Mesothelae) from central and eastern Thailand.
SCHWENDINGER, P. On the spider genus Liphistius (Araneae: Mesothelae) in Thailand and Burma.
www.ville-ge.ch /musinfo/mhng/page-e/artowho.htm   (3252 words)

  
 Pests, Insects, Cockroaches and More
Only members of the suborder Mesothelae still exhibit a segmented abdomen, and these spiders are generally considered the most primitive types of spiders.
Scientists typically divide the 40,000 species of spiders into three suborders: the Mesothelae, the Mygalomorphae, and the Araneomorphae.
Spiders of this suborder are sometimes called living fossils since they still exhibit primitive traits that no other living spiders share.
www.infobreaks.com /newsletter/nl111305.html   (2133 words)

  
 Joachim Haupt
Haupt, J.: The Mesothelae – a monograph of an exceptional group of spiders (Araneae: Mesothelae).
Haupt, J.: Zum Fortpflanzungsverhalten der Gliederspinne Heptathela (Liphistiidae, Mesothelae).
Haupt, J.: Comparative morphology and phylogeny of liphistiomorph spiders (Araneida: Mesothelae).
www.tu-berlin.de /fb7/ioeb/biodiversitaet/haupt.htm   (2442 words)

  
 Graywolf Press
Right now there’s a surprisingly large Mesothelae Antrodiaetidae on the ceiling directly about my hospital bed.
I know the markings: the hair on the cephalothorax is dark chestnut brown, the abdomen more purplish.
The Mesothelae Antrodiaetidae is classified as an atypical tarantula and is the biggest of the trapdoor spiders.
www.graywolfpress.org /Related_Content/Book_Excerpts/Excerpt_from_The_Weatherman   (1397 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)

  
 Spyda-webb.co.uk - What is a spider? - Your ultimate resource for all things with eight legs!
In the first and most ancient spider group, mesothelae, there are only nine species.
Unlike all other spiders, the mesothelae have 12 abdominal segments, two pairs of book lungs, and only two pairs of spinnerets.
These spiders are very rare and found only in eastern Asia.
homepage.ntlworld.com /spydawebb/about.html   (632 words)

  
 Minibeast Profile 01: Spiders   (Site not responding. Last check: 2007-10-01)
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   (823 words)

  
 Primitive Plants - Search Results - MSN Encarta   (Site not responding. Last check: 2007-10-01)
Horsetail, also scouring rush, common name for any of a genus of spore-producing plants, comprising about 29 species.
The suborder Mesothelae is a small, primitive group of spiders that have a segmented abdomen resembling that of early fossil spiders.
See all search results in Photos and more (120)
ca.encarta.msn.com /Primitive_Plants.html   (77 words)

  
 Gordon's Tarantula Care Sheet
The class Arachnida contains several orders, one of which the Aranaea contains all the animals properly called spiders.
The order Aranaea has three major divisions called sub orders, the Mesothelae, the Mygalomorphae and the Araneomorphae.
The large spiders commonly called tarantulas belong to the sub order Mygalomorphae.
www.earthlife.net /chelicerata/tarantula.html   (2227 words)

  
 Spider - Questionz.net , answers to all your questions   (Site not responding. Last check: 2007-10-01)
Spiders belong to the Long-jawed orb weaver, Family: Aranaedae.
order divided into three Scientific classification sub-orders in newer systems: Kingdom: Animalia the Mygalomorphae (the primitive spiders), the Phylum: Arthropoda Araneomorphae (the modern Class: Arachnida spiders) and the Mesothelae, which contains the Family Order: Araneae Liphistiidae, rarely seen Families burrowing spiders from Asia.
All spiders Suborder Araneomorphae produce silk, even those Filistatidae (crevice weavers) which do not spin elaborate Zoropsidae traps with them.
www.questionz.net /List_of_phobias/Spider.html   (2422 words)

  
 Definition of mesothelae - Merriam-Webster Online Dictionary   (Site not responding. Last check: 2007-10-01)
Click here to search for another word in the Merriam-Webster Online Dictionary.
Visit Britannica.com for more information on "mesothelae "
Get the Top 10 Search Results for "mesothelae "
www.bonus.com /contour/merriam_webster/http@@/www.m-w.com/dictionary/mesothelae   (55 words)

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