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Urticating hairs or urticating bristles are one of the primary defense mechanisms used by numerous plants, almost all New World tarantulas, and various lepidopteran caterpillars. Urtica is Latin for "nettle" (stinging nettles are in the genus Urtica ), and bristles that urticate are characteristic of this type of plant, and many other plants in ...
It is an Old World tarantula, so has no urticating hairs; its only defenses are biting and fleeing. This tarantula is known to have more potent venom than many tarantula species [ citation needed ] , but Cyriopagopus albostriatus venom was shown in a study to have the ability to regulate activity in voltage-gated sodium channels, which are ...
Tarantulas often hold this position for longer than the duration of the original threat. Their next step, without biting, may be to slap down on the intruder with their raised front legs. If that response fails to deter the attacker, the tarantulas of the Americas may next turn away and flick urticating hairs toward the pursuing predator. The ...
They are distinguished from true spiders by their two pairs of book lungs, vertically oriented chelicerae, and urticating setae. However, like all members of Psalmopoeus , P. irminia lack these urticating hairs but make up for it by having stronger venom compared to other New World tarantulas.
It includes nearly all the North American tarantula species north of Mexico and a considerable percentage of the tarantula species that range into Central America. Most are fairly large tarantulas with leg spans of 6 in (16 cm) or more. Like most New World tarantulas, all species of Aphonopelma have urticating hairs. Despite their fearsome ...
Aphonopelma chalcodes, commonly known as the western desert tarantula, desert blonde tarantula, Arizona blonde tarantula or Mexican blonde 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.
Additionally, A. hentzi and most other tarantulas found in the Americas have small, coarse, brown or black urticating hairs on their abdomens that they kick in the direction of whatever they may feel threatens them. It is the main species preyed upon by the tarantula hawk, Pepsis grossa, in areas where the two species overlap. [9]
Similar to many tarantula species, A. Anax is non-aggressive and avoids confrontations with humans and larger animals. This docile temperament makes it very desirable in the pet trade, along with A. hentzi. If provoked, however, the tarantula will use its hind legs to kick off some of its urticating hairs towards the potential threat.