In humans and other primates, the knee joins the thigh with the leg and consists of two joints: one between the femur and tibia, and one between the femur and patella. It is the largest joint in the human body. The knee is a modified hinge joint, which permits flexion and extension as well as slight internal and external rotation. The knee is vulnerable to injury and to the development of osteoarthritis.
Brachypelma smithi is a species of spider in the family Theraphosidae (tarantulas) native to Mexico. It has been confused with Brachypelma hamorii; both have been called Mexican redknee tarantulas. Mexican redknee tarantulas are a popular choice as pets among tarantula keepers. Many earlier sources referring to B. smithi either relate to B. hamorii or do not distinguish between the two species. B. smithi is a terrestrial tarantula native to Pacific coast of the Mexican state of Guerrero.
Annandaliella travancorica is a species of tarantula spider found in the Western Ghats of India. It was the first of three members of the genus Annandaliella to be described, therefore the type species.
Poecilotheria is a genus of Asian tarantulas that was first described by Eugène Louis Simon in 1885. They are arboreal tarantulas, commonly known as ornamental tarantulas, known for their vivid color patterns, fast movement, and potent venom compared to other tarantulas. As of 2019 all species are protected under CITES.
Poecilotheria metallica, also known as the peacock tarantuala, is an Old World species of tarantula. It is the only blue species of the genus Poecilotheria. Like others in its genus it exhibits an intricate fractal-like pattern on the abdomen. The species' natural habitat is deciduous forest in Andhra Pradesh, in central southern India. It has been classified as Critically endangered by the IUCN.
Araneus marmoreus, commonly called the marbled orbweaver, is a species of spider belonging to the family Araneidae. It is sometimes also called the pumpkin spider from the resemblance of the female's inflated abdomen to an orange pumpkin. It has a Holarctic distribution. Like other orbweavers, the marbled orbweaver is not considered a medically significant species.
Poecilotheria regalis is a species of arboreal tarantula and is found in parts of India. The common name for this spider is Indian ornamental tree spider, or simply Indian ornamental. It is one of the most popular arboreal tarantulas for amateur collectors. Their leg span sometimes exceeds 7 inches (18 cm).
This glossary describes the terms used in formal descriptions of spiders; where applicable these terms are used in describing other arachnids.
Poecilotheria ornata, known as the fringed ornamental or ornate tiger spider, is a large arboreal tarantula, which is endemic to Sri Lanka. Their legspan sometimes reaches 10 inches (25 cm) in females, and is probably the second largest of the genus, behind Poecilotheria rufilata.
Poecilotheria hanumavilasumica, also known as the Rameshwaram ornamental, or Rameshwaram parachute spider, is a critically endangered species of tarantula.
Poecilotheria rajaei is a tarantula in the genus Poecilotheria endemic to Sri Lanka.
Poecilotheria miranda, also known as the Bengal ornamental is a species of tarantula. The species is endemic to India.
Poecilotheria fasciata, or the Sri Lanka ornamental, is a large arboreal tarantula. It is endemic to central Sri Lanka.
Poecilotheria smithi, or the yellow-backed ornamental, is a species of large arboreal tarantulas. It is endemic to Sri Lanka and considered to be critically endangered.
Poecilotheria striata, or the Mysore ornamental tarantula, is a large arboreal tarantula of the family Theraphosidae. It is endemic to India.
Poecilotheria vittata, sometimes called Pederson's ornamental, the ghost ornamental, or magam tiger spider, is an arboreal tarantula. It is endemic to Sri Lanka. In IUCN Red List, the species is cited as a synonym of Indian species Poecilotheria striata, but in other local text books and online publications, it is cited as a separate species. As of February 2016, the species was considered to be native to both India and Sri Lanka by the World Spider Catalog.
Poecilotheria subfusca, or the ivory ornamental, is a spider in the tarantula family, Theraphosidae. It is endemic to Sri Lanka. As of February 2019, the World Spider Catalog regarded Poecilotheria bara as a synonym. Other sources, particularly in the pet trade, have treated highland and lowland forms as distinct species, with the lowland forms being P. bara.
Poecilotheria rufilata, also known as the red slate ornamental, reddish parachute spider, Travancore slate-red, or rufus parachute spider, is an arboreal tarantula. It is endemic to South Western Ghats of India. It is classed as "endangered", threatened by habitat loss and smuggling for the pet trade.
Antrodiaetus microunicolor is a species of antrodiaetid mygalomorph spider. It is found in the United States of America.
Schizocosa stridulans is a sibling species of S. ocreata and S. rovneri and is part of the wolf spider family. The name of the genus comes from the epigynum structure being lycosid and having a split T excavation. This spider is well-known for its specific leg ornamentation and courtship rituals and that is how it has been differentiated from its related species. The S. stridulans take systematic steps during its courtship ritual, which involves two independent signals. More specifically, female spiders will leave silk and pheromones to communicate that they are ready to mate.
