• abdomen
  • Much like a spider, the body of a solifugid has two tagmata: an opisthosoma (abdomen) behind the prosoma (that is, in effect, a combined head and thorax). (wikipedia.org)
  • Most females have a long sharp ovipositor at the tip of the abdomen, sometimes lacking venom glands, and almost never modified into a sting. (wikipedia.org)
  • Anatomically, spiders differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax and abdomen, and joined by a small, cylindrical pedicel. (wikipedia.org)
  • Spiders have a distinct abdomen that is separated from the cephalothorax by a constriction, and they have three to four pairs of eyes, usually around the margins of the cephalothorax. (wikipedia.org)
  • The most easily discernible difference between harvestmen and spiders is that in harvestmen, the connection between the cephalothorax and abdomen is broad, so that the body appears to be a single oval structure. (wikipedia.org)
  • The male widow spiders often exhibit various red or red and white markings on the dorsal surface (upper side) of the abdomen, ranging from a single stripe to bars or spots. (wikipedia.org)
  • Black Widow S
  • Male black widow spiders tend to select their mates by determining if the female has eaten already to avoid being eaten themselves. (wikipedia.org)
  • Black widow spiders prefer to nest near the ground in dark and undisturbed areas, usually in small holes produced by animals, or around construction openings or wood piles. (wikipedia.org)
  • insects
  • Young spiders look like dead insects and are thus hard to find on a web. (wikipedia.org)
  • Practical uses include as food (entomophagy), in medicine, for the valuable textile silk, for dyestuffs such as carmine, in science, where the fruit fly is an important model organism in genetics, and in warfare, where insects were successfully used in the Second World War to spread disease in enemy populations. (wikipedia.org)
  • Unlike insects, spiders do not have antennae. (wikipedia.org)
  • The spider very frequently hangs upside down near the centre of its web and waits for insects to blunder in and get stuck. (wikipedia.org)
  • cephalothorax
  • The cephalothorax is yellow-brown and bears two, broad longitudinal stripes positioned towards the front of the spider. (wikipedia.org)
  • They can be easily distinguished from long-legged spiders by their fused body regions and single pair of eyes in the middle of the cephalothorax. (wikipedia.org)
  • defensive
  • Harvestmen have a pair of prosomatic defensive scent glands (ozopores) that secrete a peculiar-smelling fluid when disturbed. (wikipedia.org)
  • many injuries to humans are due to defensive bites delivered when a spider gets unintentionally squeezed or pinched. (wikipedia.org)
  • cribellate
  • Uloborus plumipes is a cribellate spider with a cribellum, a silk spinning organ which consists of one or more plates covered in thousands of tiny spigots. (wikipedia.org)
  • All members of this family produce a feathery, fuzzy silk called cribellate (or hackled) silk. (wikipedia.org)
  • typically
  • These spiders are fairly common in Europe and Central Europe, and are typically concentrated in areas near forests and low lying vegetation, as well as in dry grasslands. (wikipedia.org)
  • Funnel-web spiders typically range in size from 8-12 millimetres (0.31-0.47 inches) for males and 10-14 mm (0.39-0.55 in) for females. (wikipedia.org)
  • large
  • In the mid-1950s it was realised that the spider is an ideal model for biological research because of its large size, inactive behaviour, and ease of breeding in laboratories. (wikipedia.org)
  • Cupiennius salei is a large spider with distinct sexual dimorphism. (wikipedia.org)
  • During about August of the same year, the female will create a large, white egg sac, containing roughly 50-130 eggs, which is then transported outside and hung from the edges of the web with multiple radiating bands of silk. (wikipedia.org)
  • Only female spiders have venom glands large enough for a bite to be harmful and require medical treatment. (wikipedia.org)
  • The medium to large spiders range from eight to twenty-three millimeters long. (wikipedia.org)
  • kimura
  • The Kimura spider, or kimura-gumo in Japanese, Heptathela kimurai, is an Old World spider, found primarily in Japan and named after Arika Kimura, who collected it in 1920. (wikipedia.org)
  • In Japan, the Kimura spider (Heptathela kimurai) is well known. (wikipedia.org)
  • unusually
  • Harvestmen are also referred to as "shepherd spiders" in reference to how their unusually long legs reminded observers of the ways that some European shepherds used stilts to better observe their wandering flocks from a distance. (wikipedia.org)
  • Solifugae
  • Solifugae is an order of animals in the class Arachnida known variously as camel spiders, wind scorpions, sun spiders, or solifuges. (wikipedia.org)
  • Spiders need considerable mobility of their abdomens in their spinning activities, and the Solifugae have no need for any such adaptation. (wikipedia.org)
  • Australian
  • This may sometimes be specified further as "Australian jewel spiders" due to the common name being shared with the unrelated North American jewel spider Araneus gemmoides, as well as the widespread jewel box spider Gasteracantha cancriformis. (wikipedia.org)
  • citation needed
  • citation needed] The ultimate strength and other physical properties of L. hesperus silk were found to be similar to the properties of silk from orb-weaving spiders that had been tested in other studies. (wikipedia.org)
  • widely
  • In some parts of Australia they are also widely known as "Christmas spiders" because they are most numerous during the summer months (December and January). (wikipedia.org)
  • family
  • Some flies in the family Acroceridae which are endoparasites of mygalomorphs may remain dormant in their book lungs for as long as 20 years before beginning their development and consuming the spider. (wikipedia.org)
  • In 2002 a new family of peptides called cupiennins (cupiennin 1a, cupiennin 1b, cupiennin 1c, cupiennin 1d) was discovered from the venom. (wikipedia.org)
  • Different from other spiders in the family Agelenidae, the A. labyrinthica, has a set of at least four trichobothria on the upper side of their tarsus of the first pair of legs. (wikipedia.org)
  • known
  • It is often known as the garden centre spider because it is found on houseplants growing in hothouses in garden centres and is able to survive the winter in greenhouses that are heated to maintain a temperature well above freezing point. (wikipedia.org)
  • Later it was realized that the common ancestors of all spiders had these features (a state known as symplesiomorphy). (wikipedia.org)
  • Austracantha minax is most commonly known as "jewel spiders" due to their body colouration. (wikipedia.org)