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Hysterocrates gigas | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Subphylum: | Chelicerata |
Class: | Arachnida |
Order: | Araneae |
Infraorder: | Mygalomorphae |
Family: | Theraphosidae |
Genus: | Hysterocrates |
Species: | H. gigas |
Binomial name | |
Hysterocrates gigas | |
Hysterocrates gigas is a member of the tarantula family, Theraphosidae found in Cameroon. [1] It is known as the giant baboon spider, Cameroon red baboon spider, or red baboon tarantula.[ citation needed ]
This is a burrowing spider and ranges in color from a dull black and gray to a rusty orange/brown. It is black when freshly moulted (post-moult) and turns brown just before a moult (pre-moult). Its eyes are small and weak and only able to judge light levels.
Its abdomen is oval in shape with a diameter up to 4 inches (10 cm). Although it has hairy legs, this tarantula is an Old World species and does not have urticating hairs on its abdomen. (Urticating hairs are hairs found in most new world species (those from North and South America) that can be shed in defence, they are barbed and may cause severe itching.)
It also has a leg span which may reach 8 inches (20 cm). This tarantula, in common with the rest of the family, has downward-facing, parallel fangs, used like pickaxes rather than pincers.
Adult males have smaller abdomens than females. Male pedipalps are club shaped, but it may take up to 4 years for differences between male and female to show, since the average male lifespan is about 4 years and the leg span of the male is roughly 5 inches (13 cm). These tarantulas spin very little silk - what silk they do spin is used for egg sacs or to line their burrows - they do not make webs. These tarantulas in particular burrow very intricate burrows.
This species lives in tropical and sub-tropical environments. According to Sam Marshall (an arachnologist, and subject of the book "The Tarantula Scientist"), they dig particularly intricate burrows. They need temperatures of 70 - 95 °F (21°C - 35°C) and high humidity in their environment (between 60%-90%). They are naturally found at ground level in tropical rain forests. [2]
These tarantulas will eat other invertebrates, such as crickets, cockroaches, butterflies, moths [3] and other spiders or small vertebrates, such as mice, lizards, frogs, snakes and occasionally birds. They are also known to be one of the only swimming spiders and will occasionally dive to catch fish. They kill their prey with their venom, inject digestive juices into the body of their prey and suck up the resulting liquid. [2]
Females lay eggs in an egg sac that may contain hundreds of eggs. Spiderlings live together for up to 6 months, though some tarantulas from the same sac are believed to co-habitate long after and even share burrows and tunnel systems. Most spiderlings will kill each other for food, but these spiderlings have actually been found to share food with their siblings. Spiderlings are very difficult to see. Their mother will kill prey for them. In their first year of life, spiderlings moult up to 8 times. Females usually moult about once a year after maturity and depending on how much the tarantula is fed, it will result in more frequent moults inevitably resulting in faster maturing.
Adaptations: These tarantulas are opportunistic, nocturnal hunters and will take whatever prey they find. The venom of these tarantulas is not medically significant, but may cause some nausea, though if the victim is abnormally sensitive medical attention may be required. Spider venom is normally intended for prey items though the spider will attack humans if provoked.
To defend themselves, they rear up aggressively on their hind legs in a threat posture, they smack their front legs on the ground and a sound comparable to the tearing of velcro can be produced by rubbing leg pairs I and II together. Although they may also bite, their main alternate defence is to run away. The name "tarantula" is commonly given to spiders in this family. It is a misnomer - it was originally given to a smaller wolf spider from Taranto, Italy, where, in the Middle Ages, people danced themselves into a trance - called the tarantella - in an attempt to purge the effects of the wolf spider's bite.[ citation needed ]
These tarantulas moult by splitting of the old exoskeleton and wriggling out of it. They pull their legs out of their old skeletons as we pull our fingers out of gloves. A new exoskeleton has grown underneath and remains soft for about a week. The tarantula stretches his new skeleton to allow for growth space and the new skeleton hardens. During and after the moult, which may take hours to complete, the tarantula is weak and dehydrated. During this time the tarantula is lying on its back with its legs in the air, very vulnerable to other creatures - even some that would normally be its prey.
Fangs are part of the exoskeleton and are shed as well. The tarantula avoids eating for a week after to make sure that its new fangs have hardened. A lost limb may be fully or partially regenerated during a moult.
Its natural enemies are mammals, birds, reptiles, wasps, ants, amphibians, big crickets, scorpions, and other tarantulas which prey on them. They are also collected as pets by humans. Rhino beetles and stag beetles also can kill them in defence.
The Goliath birdeater belongs to the tarantula family Theraphosidae. Found in northern South America, it is the largest spider in the world by mass and body length, and second to the giant huntsman spider by leg span. It is also called the Goliath tarantula or Goliath bird-eating spider; the practice of calling theraphosids "bird-eating" derives from an early 18th-century copper engraving by Maria Sibylla Merian that shows one eating a hummingbird. Despite the spider's name, it rarely preys on birds.
The Chilean rose tarantula, also known as the rose hair tarantula, the Chilean fire tarantula, or the Chilean red-haired tarantula, is probably the most common species of tarantula available in American and European pet stores today, due to the large number of wild-caught specimens exported cheaply from their native Chile into the pet trade. The species is also known from Bolivia and Argentina.
Brachypelma hamorii is a vulnerable species of tarantula found in Mexico. It has been confused with B. smithi; both have been called Mexican redknee tarantulas. Many earlier sources referring to B. smithi either do not distinguish between the two species or relate to B. hamorii. B. hamorii is a terrestrial tarantula native to the western faces of the Sierra Madre Occidental and Sierra Madre del Sur mountain ranges in the Mexican states of Colima, Jalisco, and Michoacán. The species is a large spider, adult females having a total body length over 50 mm (2 in) and males having legs up to 75 mm (3 in) long. Mexican redknee tarantulas are a popular choice for enthusiasts. Like most tarantulas, it has a long lifespan.
Lasiodora parahybana, the Brazilian salmon pink bird-eating tarantula, also simply known as the salmon pink or LP, is a tarantula from north-eastern Brazil and considered to be the fourth largest tarantula in the world.
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.
Pterinochilus murinus or the orange baboon tarantula, is a nocturnal spider in the family Theraphosidae that was first described in 1897 by Reginald Innes Pocock. This species is found in Angola, as well as central and southern Africa. It is a member of the subfamily Harpactirinae, baboon spiders.
Tliltocatl albopilosus is a species of tarantula, also known as the curlyhair tarantula. The species' native range is Nicaragua and Costa Rica. They are largely terrestrial, opportunistically burrowing spiders.
Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. As of December 2023, 1,100 species have been identified, with 166 genera. 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.
The Aphonopelma hentzi, also known as Texas brown tarantula, Oklahoma brown tarantula, or Missouri tarantula, is one of the most common species of tarantula living in the Southern United States today. Texas brown tarantulas can grow to leg spans in excess of 10 cm (4 in), and weigh more than 85 g (3 oz) as adults. Their bodies are dark brown, though shades may vary between individual tarantulas. The colors are more distinct after a molt, as with many arthropods.
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 with a stroke.
Hysterocrates crassipes is a species of spiders in the family Theraphosidae (tarantulas) found in Cameroon, Africa.
Psalmopoeus irminia, also known as the Venezuelan suntiger, is a species of tarantula endemic to Venezuela, Guyana and Brazil. They were first described in 1994 by F. Saager.
Aphonopelma anax, commonly known as the Texas tan tarantula, is a species of spider belonging to the family Theraphosidae native to southern Texas and northern Mexico.
Heteroscodra maculata is an Old World species of tarantula which was first described in 1899 by Reginald Innes Pocock. This species native to West Africa and is found primarily in Togo and Ghana. This species has many common names, of which Togo starburst and ornamental baboon are most frequently encountered.
Atrax yorkmainorum is a venomous species of Australian funnel-web spider belonging to the Atracidae family and is found in forests in the vicinity of Canberra and south-eastern New South Wales. The genus Atrax was first documented in 1877 and the Atrax yorkmainorum species was first described in 2010.
Lasiodora difficilis, common name Brazilian red birdeater, is a species of tarantulas belonging to the family Theraphosidae.
Theraphosa stirmi is a species of tarantula belonging to the family Theraphosidae. It is known as the burgundy goliath bird eater.
Tapinauchenius plumipes, the orange tree spider, is a tarantula endemic to French Guiana. It was first described by Ludovico Di Caporiacco in 1954. Its previous name, Tapinauchenius gigas was based on the Latin word for giant, being gigas. This tarantula is often kept as a pet and commonly bred.
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.
Monocentropus balfouri is a tarantula in the Monocentropus genus, it was first described by Reginald Innes Pocock in 1897. This tarantula is also called Socotra Island blue baboon tarantula, usually shortened to blue baboon tarantula. This spider is named after its collector Isaac Bayley Balfour. It is found in Socotra Island, hence the common name. This tarantula is terrestrial and an opportunistic burrower. Like many tarantulas, M. balfouri can be kept as a pet, although it is not a beginner species.