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Topic: Pseudoscorpion

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	Kids.Net.Au - Encyclopedia > Pseudoscorpionida
		A pseudoscorpion, (also known as a false scorpion or book scorpion), is an invertebrate animal belonging to the order Pseudoscorpionida in the class Arachnida, in the subphylum Chelicerata of the phylum Arthropoda.
		Pseudoscorpions are tiny, scorpion-like arthropods with a flat, pear-shaped body with two sections, eight 5-segmented legs, and simple eyes.
		Pseudoscorpions are generally beneficial to humans since they prey on clothes moth larvae, carpet beetle larvae, booklice[?], ants, mites, and small flies.
	www.kids.net.au /encyclopedia-wiki/ps/Pseudoscorpionida?title=Brood (467 words)

	Pseudoscorpion - Wikipedia, the free encyclopedia
		A pseudoscorpion, (also known as a false scorpion or book scorpion), is an arachnid belonging to the order Pseudoscorpionida, also known as Pseudoscorpiones or Chelonethida.
		Pseudoscorpions are tiny, scorpion-like arthropods with a flat, pear-shaped body with two sections, eight 5-segmented legs, and simple eyes.
		Pseudoscorpions are generally beneficial to humans since they prey on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, and small flies.
	en.wikipedia.org /wiki/Pseudoscorpion (479 words)

	Pseudoscorpion
		Description: The body of pseudoscorpions is divided into two general regions; the head-thorax (cephalothorax) and the abdomen.
		Pseudoscorpions are quite small with a body length generally under 3 mm.
		Life Cycle: Pseudoscorpions have spinnerets and produce silk that is used to construct nests and temporary sheets for sperm transfer.
	insects.tamu.edu /fieldguide/cimg375.html (336 words)

	Urban IPM: Scorpions and Scorpion-Like: Pseudoscorpions
		Pseudoscorpions superficially resemble the true scorpions, bearing relatively large chelae on the pedipalps, but they do not have a telson or stinger.
		Pseudoscorpion pedipalps are similar to those of scorpions; however, they are peculiar in that usually each has a poison gland located in one or both "fingers" of the hand.
		Male pseudoscorpions deposit a spermatophore on the substrate, and the female is attracted to it by scent or in some advanced species, the female is actively maneuvered to the spermatophore by the male, who aids her it its uptake.
	ag.arizona.edu /urbanipm/scorpions/pseudoscorpions.html (455 words)

	Neobisium Laboratory Exercise (Site not responding. Last check: 2007-11-04)
		Pseudoscorpions have a cephalothorax with a solid undivided carapace and an abdomen with 12 distinct segments.
		The pseudoscorpion cephalothorax is unsegmented whereas the abdomen is distinctly segmented.
		Pseudoscorpions can detect vibrations from prey from as far away as 15 mm, which is several times the body length of most pseudoscorpions.
	local.lander.edu /rsfox/310neobisiumLab.html (2944 words)

	Wolf's Pseudoscorpion Page (Site not responding. Last check: 2007-11-04)
		Pseudoscorpions often live in soil, leaf litter, animal nests, under logs, rocks and the bark of fallen and standing trees.
		Pseudoscorpions have been known to use their palpal chelae to latch on to larger flying insects, such as flies, and get a free ride.
		Pseudoscorpions with poison glands will grab a prey item with its palpal chelae, injecting it with poison as it clamps down, and then hold onto the prey, waiting for the food to be anesthetized by the poison.
	www.sff.net /people/windrummer/ReadWebSite/psdoscrp.html (1669 words)

	Pseudoscorpion
		They are small and inoffensive, and are rarely seen due to their size.
		There are more than 2,000 species of pseudoscorpions recorded, with more being discovered every day.
		Other species have been found under tree bark, in leaf and pine litter, in soil, in tree hollows, under stones and within fractured rocks.
	www.ebroadcast.com.au /lookup/encyclopedia/ps/Pseudoscorpionida.html (442 words)

	Neobisium Laboratory Exercise (Site not responding. Last check: 2007-11-04)
		Pseudoscorpions have a cephalothorax with a solid undivided carapace and an abdomen with 12 distinct segments.
		The pseudoscorpion cephalothorax is unsegmented whereas the abdomen is distinctly segmented.
		Pseudoscorpions can detect vibrations from prey from as far away as 15 mm, which is several times the body length of most pseudoscorpions.
	www.lander.edu /rsfox/310neobisiumLab.html (2944 words)

	Ecowatch - pseudoscorpion (Site not responding. Last check: 2007-11-04)
		Pseudoscorpions are small Arachnids and are in the same class as scorpions and spiders.
		Pseudoscorpions are harmless unless you happen to be another invertebrate, as they feed on small insects and mites.
		Some Pseudoscorpions have been observed to perform a mating dance of sorts where the male grasps the female's pincers in his own and holds her until she picks up the sperm packet he has placed on the ground.
	www.ento.csiro.au /Ecowatch/Primary/arachnida/pages/synsphyronus_absitus.htm (234 words)

	Tooth Cave Pseudoscorpion (Site not responding. Last check: 2007-11-04)
		Pseudoscorpions are different than scorpions in that they lack a tail (post abdomen), stinger, and book lungs.
		Muchmore reclassified the pseudoscorpion from Microcreagris texana to Tartarocreagris, based on the classification of a similar specimen found in Williamson County, noticing the differences between the males and classifying them as separate genuses.
		The pseudoscorpions are very rare, and their reproductive cycles and other details are not known because the species was only discovered in 1960, and with very few encounters with individuals.
	www.orecity.k12.or.us /ochs/departments/science/species/toothcavepseudoscorpion.html (1104 words)

	Pseudoscorpion: pictures, information, classification and more
		Pseudoscorpion, or false scorpion, common name for any of a group of small arachnids that look like tiny scorpions but lack the scorpion's long tail and sting.
		The abdomen of the pseudoscorpion is oval and has a wide junction with the rectangular carapace, the shell-like covering of the head and upper part of the body.
		Pseudoscorpions are from 1 to several millimeters long (0.04 to 0.25 in).
	www.everythingabout.net /articles/biology/animals/arthropods/arachnids/pseudoscorpion (453 words)

	Pseudoscorpions, HYG-2062-98
		Pseudoscorpions are between 1/16 to 1/8 inch (2 to 8 mm) long, flat-bodied arachnids with a short, usually oval abdomen (11 or 12 segmented) rounded posteriorly.
		Pseudoscorpions are rather common but rarely seen due to their secretive habits and small size.
		Pseudoscorpions are considered beneficial to humans since they are aggressive feeders (predators) on clothes moth larvae, carpet beetle larvae, booklice, ants, mites, small flies and even small earthworms.
	ohioline.osu.edu /hyg-fact/2000/2062.html (696 words)

	Pseudoscorpion - Penn State Entomology Department Fact Sheet
		Pseudoscorpions are tiny arachnids, 2 to 8 millimeters in length, with four pairs of legs and one pair of relatively large pedipalps (pincer-like claws).
		Pseudoscorpions are neither dangerous, nor destructive; they eat many small arthropods, including caterpillars, flies, ants, beetle larvae, and booklice.
		The house pseudoscorpion adult is 3 to 4 millimeters in length and has a rich mahogany color.
	www.ento.psu.edu /extension/factsheets/pseudoscorpion.htm (521 words)

	TerraTreasures and Adventures101 offer this specimen of a beautifully preserved rare pseudoscorpion in an authentic ... (Site not responding. Last check: 2007-11-04)
		Pseudoscorpions are small creatures, their body length usually is no more than 5mm.
		Adult pseudoscorpions can sometimes be seen riding on the back or wings of insects, this behavioural phenomenon is called "phoresis", and some fine examples of this odd behaviour can be seen in amber.
		Pseudoscorpions living in the same habitat as beetles clamp onto the beetles which then move them to a new habitat after their old one has deteriorated.
	www.terratreasures.com /amber/specimens/dr2054pseudoscorpion/dr2054pseudoscorpion.htm (574 words)

	Royal Alberta Museum: Invertebrate Zoology - Bug Facts - Pseudoscorpion
		Pseudoscorpions hibernate through the winter and are active during the warm weather.
		Typically pseudoscorpions are found outdoors in leaf litter, under rocks, bark and logs, in mosses and in the soil.
		All pseudoscorpions are predators and, when in a house, help keep populations of undesirable insects under control.
	www.royalalbertamuseum.ca /natural/insects/bugsfaq/pseudo.htm (389 words)

	Pseudoscorpion: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-11-04)
		A pseudoscorpion, (also known as a false scorpion or book scorpion), is an invertebrate animal belonging to the order pseudoscorpionida in the class arachnida,...
		A scorpion is an invertebrate animal with eight legs belonging to the order scorpiones in the class arachnida....
		Pseudoscorpions are generally beneficial to humans since they prey on clothes moth moth quick summary:
	www.absoluteastronomy.com /encyclopedia/p/ps/pseudoscorpion.htm (1032 words)

	Pseudoscorpions or false scorpions (Order Pseudoscorpionida)
		Pseudoscorpions are usually solitary but some live in groups.
		Most spin silk that is generally used for home building and protecting pseudoscorpions that are moulting or breeding.
		Scorpions are easily distinguished from pseudoscorpions as they have long tails with stingers and are usually larger than 10 mm.
	www.bugwise.net.au /guide/pseudoscorpions.htm (195 words)

	entnote16.html (Site not responding. Last check: 2007-11-04)
		These tiny arachnids--the average body length of the adult ranges from 2 to 4 mm--often generate little interest because they are difficult to keep alive for prolonged periods and their economic importance is confined to the role they play in the food web.
		Pseudoscorpions are known to be phoretic (use another species for transportation) on insects (especially flies, beetles, and wasps) and harvestmen, and occasionally they are found on the bodies of birds and mammals.
		Pseudoscorpions are reported to live in a wide variety of habitats, often in large numbers.
	insects.ummz.lsa.umich.edu /MES/notes/entnote16.html (1203 words)

	JIS: Tschinkel 2.12.2002
		Pseudoscorpions possess two pairs of spiracles that are located laterally on the posterior margins of abdominal sternites 3 and 4.
		Pseudoscorpions are of particular interest because a clade of closely related tracheate arthropods, the solphugids (Shulz, 1990, Wheeler and Hayashi, 1998), have evolved a DGC that closely resembles that of insects (Lighton and Fielden, 1996).
		It is perhaps significant that pseudoscorpions are limited to marginal habitats in areas where water vapor pressure is likely to be high, such as in soil litter and under stones.
	www.insectscience.org /2.23 (2979 words)

	Pseudoscorpion sp. (Site not responding. Last check: 2007-11-04)
		Habitat: This species of pseudoscorpion is found in the interior of the cave, within a zone of complete darkness, and where temperature and humidity remain constant.
		The pseudoscorpion is found under small pieces of broken limestone rock scattered throughout the interior of the cave.
		The pseudoscorpion feeds on macroscopic invertebrates which feed on the mold that grows on cricket guano.
	www.co.pima.az.us /cmo/sdcp/species/fsheets/vuln/ps.html (279 words)

	Pseudoscorpion injects prey with venom
		Pseudoscorpions often travel by gripping the leg of a fly, beetle, moth or other bug and hitching a ride.
		There is one pseudoscorpion that is commonly found in homes all over the world.
		The house pseudoscorpion (Chelifer cancroides) is fond of carpet beetle larvae, clothes moth larvae, booklice, and just loves to eat bedbugs.
	www.sfgate.com /cgi-bin/article.cgi?file=/c/a/2003/10/11/HO17606.DTL&type=printable (697 words)

	What's That Bug?
		I noticed my Pseudoscorpion has a dot on its back and it seems to be a lighter color than others.
		Pseudoscorpions prey on insects and spiders and are often found in bathrooms.
		While you are right that Pseudoscorpions look like a cross between spiders and scorpions and spiders, both of whom are related, you can rest easy that they are totally harmless, unless you are a small insect.
	www.whatsthatbug.com /pseudoscorpion.html (4475 words)

	Natchez Naturalist Newsletter:
		Pseudoscorpions are too small to injure humans, but their claws bear poison glands that help them incapacitate insect prey.
		Pseudoscorpions are often distributed over much larger geographical regions than would be expected, and this is often attributed to their special talent for hitchhiking on the bodies of larger animals.
		Pseudoscorpions are often abundant in leaf litter, under stones, and the like, and some of them even turn up in people's houses, especially in bathrooms, to which they are attracted by the humidity.
	www.backyardnature.net /n/03/030302.htm (2421 words)

	The Sixth International: Christmas Eve arachnid blogging (and for once it's not a spider)
		Pseudoscorpions are known for living in old books, and perhaps you have seen one while perusing your incunabula.
		Unlike spiders, whose silk glands are at the back end, pseudoscorpions emit silk through their 'jaws' (chelicerae, which are in origin the first pair of appendages).
		They nip in to paralyse their large and dangerous prey by pinching its extremities; when the ant is subdued, the pseudoscorpions' young will be the first to feed.
	www.6thinternational.org /2004/12/friday_arachnid_2.html (923 words)

	Augsburg College Biology - Photo of Month - November 2002
		The pseudoscorpion shown here was brought to me by a student in my general biology class.
		Apparently, this pseudoscorpion had wandered into the home of this student's parents, where it was found in the bathroom on the shower curtain.
		Consequently, this minute pseudoscorpion caught my student's eye, and I am very grateful that she took the time to bring it to class for all of us to see.
	www.augsburg.edu /biology/photoofmonth/pseudoscorpion.html (692 words)

	Melissa Stokes: Tooth Cave Pseudoscorpions
		And finally, even if they did do everything they promise to protect the pseudoscorpions, the population alone exposed to their habitat may be their downfall.
		Yes, the pseudoscorpions are an endangered species but we will be ensuring their survival by trying to understand a process they are already undergoing and applying it to other fields.
		The Tooth Cave Pseudoscorpion is not too picky about what he eats but we do know smaller invertebrates fall prey to those powerful pinchers of his.
	students.ou.edu /S/Melissa.S.Stokes-1/species.html (1921 words)

	Pseudoscorpion fascinating : Local : gosanangelo.com
		Pseudoscorpions are common animals in your firewood pile, and theyâre back there under the two-by-fours stacked beside the back fence.
		Pick up a beetle with pseudoscorpions on board, and youâll see these tiny animals scurry around and dash under cover beneath the beetleâs elytra.
		One, the Tooth Cave pseudoscorpion, is known only from two caves in Travis County.
	www.gosanangelo.com /news/2007/feb/11/pseudoscorpion-fascinating (646 words)

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