Atypical tarantula

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Atypical tarantulas
Temporal range: Cretaceous–present
Sphodros rufines.JPG
Sphodros rufipes
Atypus karschi.jpg
Atypus karschi
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Mygalomorphae
Clade: Atypoidea
Family: Atypidae
Thorell, 1870
Genera
Diversity
3 genera, 58 species
Distribution.atypidae.1.png

Atypidae, also known as atypical tarantulas or purseweb spiders, is a spider family containing only three genera. They are accomplished ambush predators that spend most of their time in a sock-like, silken retreat on the ground from where they kill their prey. [1]

Contents

Distribution

Sphodros and Atypus occur in North America, while Atypus and Calommata occur in Asia and Africa. Only Atypus species are found in Europe. [2] Atypus affinis , Atypus muralis , and Atypus piceus are the only mygalomorph spiders found in northwestern Europe.

Biology

Atypus builds a silken tube parallel to the surface of the ground. While up to 8 cm of the tube lie on the ground, about 20 cm are buried vertically. The spider rests at the bottom of the tube. When prey walks on the exposed part, the spider, alerted by the vibrations, stabs the prey through the silk, cuts the web and drags the prey inside to be eaten. Calommata species, instead of building a purse web, live in burrows. [3] Sphodros spp. usually prop their tubes against a tree trunk.

Atypical tarantulas have huge chelicerae for their size and relatively long spinnerets (although not as long as those found in diplurids). The males are sometimes brightly colored and wander around looking for females in their tubes. The females are reddish-brown or dark-colored.

During the breeding season for A. affinis, the male leaves his own burrow and goes in search of females. When he finds the burrow of a female, he tentatively taps on the wall of the purse web, and if the female is receptive, he ventures into the confines of the burrow. The two spiders mate and cohabit until the male dies, when the female eats him. The female makes an egg sac and hangs it in her burrow. The next summer, the eggs hatch, and the spring after that, the spiderlings leave their mother's burrow and wander off to find a suitable place to build a lair of their own. [1]

Southeast Asian Atypus species have a body length of 7 to 21 mm in females, and about 12 mm in males. Calommata spp. of this region grow from 23 to 30 mm in females, and only about 7 mm in males. [3]

Genera

As of April 2019, the World Spider Catalog accepts the following genera: [2]

See also

Related Research Articles

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Tarantula hawk Common name for two genera of wasps

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<i>Lycosa tarantula</i> Species of arachnid

Lycosa tarantula is the species originally known as the tarantula, a name that nowadays in English commonly refers to spiders in another family entirely, the Theraphosidae. It now may be better called the tarantula wolf spider, being in the wolf spider family, the Lycosidae. L. tarantula is a large species found in southern Europe, especially in the Apulia region of Italy and near the city of Taranto, from which it gets its name.

<i>Sphodros rufipes</i> Red legged purseweb spider from the United States

Sphodros rufipes, sometimes called the red legged purseweb spider, is a mygalomorph spider from the southern United States, though it has been photographed as far north as Indiana, Missouri, New Jersey, Minnesota, Tennessee, Delaware, Louisiana, and Tuckernuck Island in Massachusetts. A recent sighting shows that these spiders can also be found in Canada. Recent sighting also in Kansas.

<i>Atypus affinis</i> Species of spider

Atypus affinis, the purseweb spider, is a common mygalomorph spider from Europe.

<i>Atypus piceus</i> Species of spider

Atypus piceus is a mygalomorph spider of the family Atypidae. It occurs in Europe to Moldavia, and Iran and is the type species of the genus Atypus.

<i>Aphonopelma chalcodes</i> Species of spider

Aphonopelma chalcodes, commonly known as the western desert tarantula, Arizona blond tarantula or Mexican blond tarantula is a species of spider belonging to the family Theraphosidae. It has a limited distribution in the deserts of Arizona and adjacent parts of Mexico but can be very common within this range. The common name "blond tarantula" refers to the carapace, which is densely covered in pale hairs, and contrasts strongly with the all-dark legs and abdomen. Additionally, these spiders have low toxicity, a long life expectancy, and several offspring.

Tarantula Family of spiders

Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. Currently, 1,010 species have been identified. The term "tarantula" is usually used to describe members of the family Theraphosidae, although many other members of the same infraorder (Mygalomorphae) are commonly referred to as "tarantulas" or "false tarantulas". Some of the more common species have become popular in the exotic pet trade. Many New World species kept as pets have setae known as urticating hairs that can cause irritation to the skin, and in extreme cases, cause damage to the eyes.

Hysterocrates gigas is a member of the tarantula family, Theraphosidae found in Cameroon. It is known as the giant baboon spider, Cameroon red baboon spider, or red baboon tarantula.

<i>Sphodros niger</i> Species of spider

Sphodros niger, the black purse-web spider, is a mygalomorph spider from the Eastern United States. It is listed as a special concern species in Connecticut.

<i>Psalmopoeus cambridgei</i> Species of spider

Psalmopoeus cambridgei, the Trinidad chevron tarantula, is a species of spider in the family Theraphosidae, endemic to Trinidad. Its venom is the source of psalmotoxin and vanillotoxin which are classified as inhibitor cystine knot proteins. Psalmotoxin may be of therapeutic use in patients suffering from a stroke.

<i>Aporus unicolor</i> Species of wasp

Aporus unicolor, common name cutpurse, is a highly specialised spider hunting wasp from the family Pompilidae.

<i>Eucteniza</i> Genus of spiders

Eucteniza is a genus of trapdoor spiders in the family Euctenizidae containing at least 14 species occurring in Mexico and the southern United States. Species are distinguished by a softened rear portion of the carapace, and males possess large spines on the first two pairs of walking legs that are used to hold females during mating. Like other trapdoor spiders they create burrows with a hinged lid, from which they await passing insects and other arthropods to prey upon. Many species are known from only one or two localities, or from only male specimens. More species are expected to be discovered. Eucteniza is closely related to spiders of the genera Entychides and Neoapachella.

<i>Pepsis grossa</i> Species of wasp

Pepsis grossa is a very large species of pepsine spider wasp from the southern part of North America, south to northern South America. It preys on tarantula spiders, giving rise to the name tarantula hawk for the wasps in the genus Pepsis and the related Hemipepsis. Only the females hunt, so only they are capable of delivering a sting, which is considered the second most painful of any insect sting; scoring 4.0 on the Schmidt sting pain index compared to the bullet ant's 4.0+. It is the state insect of New Mexico. The colour morphs are the xanthic orange-winged form and the melanic black winged form. In northern South America, a third form, known as "lygamorphic", has a dark base to the wings which have dark amber median patches and a pale tip.

<i>Arbanitis robertsi</i> Species of spider

Arbanitis robertsi is a species of tube spider in the family Idiopidae found in and near rainforests in New South Wales and Queensland, Australia. A mid to large sized spider which builds a tube of web that extends from the burrow. The tube is attached to rocks, tree ferns or the base of trees. Thousands of these tubes were recorded by Sid Jackson in November 1922 at the south eastern end of Wallis Lake. "Up to three feet long, and half an inch wide". Situated on damp ground, close to freshwater streams.

References

  1. 1 2 Piper, Ross (2007). Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals . Greenwood Press.
  2. 1 2 "Family: Atypidae Thorell, 1870". World Spider Catalog. Natural History Museum Bern. Retrieved 2019-04-19.
  3. 1 2 Murphy, F.; Murphy, J. (2000). "An introduction to the spiders of South East Asia with notes on all the genera". Malaysian Nature Society Kuala Lumpur.