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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.
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 ...
Tarantulas comprise a group of large and often hairy spiders of the family Theraphosidae. [2] As of December 2023, 1,100 species have been identified, with 166 genera. [3] 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".
Aphonopelma seemanni, the Costa Rican zebra tarantula, also known as the striped-knee tarantula, is a species of tarantula inhabiting most of western Costa Rica and other parts of Central America, such as Honduras and Nicaragua, and possibly Guatemala. [1]
The hairs are extremely irritating to the skin and can rarely cause blindness if they get into the eye. Handling can also be dangerous to the tarantula - with terrestrial species such as L. parahybana, because they are so heavily bodied, a fall of more than a few inches can rupture the abdomen and severely injure or kill the tarantula.
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]
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 ...
Lasiocyano is a genus of tarantulas (family Theraphosidae). [2] As of June 2023 [update] , it was a monotypic genus with the sole species Lasiocyano sazimai , [ 3 ] synonym Pterinopelma sazimai , [ 1 ] known as the Brazilian blue , iridescent blue or Sazima's tarantula .