Post by rock on May 17, 2019 5:11:44 GMT 5
emperor scorpion
The emperor scorpion, Pandinus imperator, is a species of scorpion native to Africa. It is one of the largest scorpions in the world and lives for 5–8 years. Its body is black, but glows under ultraviolet light. The emperor scorpion (Pandinus imperator) is one of the largest species of scorpion in the world, with adults averaging about 20 centimetres (7.9 in) in length. However, some species of forest scorpions are fairly similar to the emperor scorpion in size, and one scorpion, Heterometrus swammerdami, holds the record for being the world's largest scorpion at 9 inches (23 cm) in length. The emperor scorpion has a dark body which ranges from dark blue-green through brown to black. The large pincers are blackish-red and have a granular texture. The front part of the body, or prosoma, is made up of four sections, each with a pair of legs. Behind the fourth pair of legs are comb-like structures known as pectines, which are longer in males. The tail, known as the metasoma, is long and curves back over the body. It ends in the large receptacle containing the venom glands and is tipped with the sharp, curved stinger. Sensory hairs cover the pincers and tail, enabling the emperor scorpion to detect prey through vibrations in the air and ground.
tarantula hawk wasp
The more familiar species are up to 5 cm (2 in) long, making them among the largest of wasps, and have blue-black bodies and bright, rust-colored wings (other species have black wings with blue highlights). The vivid coloration found on their bodies, and especially wings, is an aposematism, advertising to potential predators the wasps' ability to deliver a powerful sting. Their long legs have hooked claws for grappling with their victims. The stinger of a female Pepsis grossa can be up to 7 mm (9⁄32 in) long, and the powerful sting is considered one of the most painful insect stings in the world.The female tarantula hawk wasp stings and paralyzes a tarantula, then drags the prey to a specially prepared brooding nest, where a single egg is laid on the spider's abdomen, and the entrance is covered.[3] Sex of the larvae is determined by fertilization; fertilized eggs produce females, while unfertilized eggs produce males.[3] When the wasp larva hatches, it creates a small hole in the spider's abdomen, then enters and feeds voraciously, avoiding vital organs for as long as possible to keep the spider alive. After several weeks, the larva pupates. Finally, the wasp becomes an adult and emerges from the spider's abdomen to continue the life cycle.
Adult tarantula hawks are nectarivorous. The consumption of fermented fruit sometimes intoxicates them to the point that flight becomes difficult. While the wasps tend to be most active in the daytime in summer, they tend to avoid high temperatures. The male tarantula hawk does not hunt; instead, it feeds off the flowers of milkweeds, western soapberry trees, or mesquite trees (females feed on these same plants, as well). Male tarantula hawks have been observed practicing a behavior called hill-topping, in which they sit atop tall plants and watch for passing females ready to reproduce. Females are not very aggressive, in that they are hesitant to sting, but the sting is extraordinarily painful.Tarantula hawk wasps are relatively docile and rarely sting without provocation. However, the sting—particularly that of P. grossa—is among the most painful of all insects, though the intense pain only lasts about five minutes.[8] One researcher described the pain as "...immediate, excruciating, unrelenting pain that simply shuts down one's ability to do anything, except scream. Mental discipline simply does not work in these situations."[5] In terms of scale, the wasp's sting is rated near the top of the Schmidt sting pain index, second only to that of the bullet ant, and is described by Schmidt as "blinding, fierce[, and] shockingly electric".[2] Because of their extremely large stingers, very few animals are able to eat them; one of the few that can is the roadrunner. Many predatory animals avoid these wasps, and many different insects mimic them, including various other wasps and bees (Müllerian mimics), as well as moths, flies (e.g., mydas flies), and beetles (e.g., Tragidion) (Batesian mimics).
Aside from the possibility of triggering an allergic reaction, the sting is not dangerous and does not require medical attention. Local redness appears in most cases after the pain, and lasts for up to a week.
The emperor scorpion, Pandinus imperator, is a species of scorpion native to Africa. It is one of the largest scorpions in the world and lives for 5–8 years. Its body is black, but glows under ultraviolet light. The emperor scorpion (Pandinus imperator) is one of the largest species of scorpion in the world, with adults averaging about 20 centimetres (7.9 in) in length. However, some species of forest scorpions are fairly similar to the emperor scorpion in size, and one scorpion, Heterometrus swammerdami, holds the record for being the world's largest scorpion at 9 inches (23 cm) in length. The emperor scorpion has a dark body which ranges from dark blue-green through brown to black. The large pincers are blackish-red and have a granular texture. The front part of the body, or prosoma, is made up of four sections, each with a pair of legs. Behind the fourth pair of legs are comb-like structures known as pectines, which are longer in males. The tail, known as the metasoma, is long and curves back over the body. It ends in the large receptacle containing the venom glands and is tipped with the sharp, curved stinger. Sensory hairs cover the pincers and tail, enabling the emperor scorpion to detect prey through vibrations in the air and ground.
tarantula hawk wasp
The more familiar species are up to 5 cm (2 in) long, making them among the largest of wasps, and have blue-black bodies and bright, rust-colored wings (other species have black wings with blue highlights). The vivid coloration found on their bodies, and especially wings, is an aposematism, advertising to potential predators the wasps' ability to deliver a powerful sting. Their long legs have hooked claws for grappling with their victims. The stinger of a female Pepsis grossa can be up to 7 mm (9⁄32 in) long, and the powerful sting is considered one of the most painful insect stings in the world.The female tarantula hawk wasp stings and paralyzes a tarantula, then drags the prey to a specially prepared brooding nest, where a single egg is laid on the spider's abdomen, and the entrance is covered.[3] Sex of the larvae is determined by fertilization; fertilized eggs produce females, while unfertilized eggs produce males.[3] When the wasp larva hatches, it creates a small hole in the spider's abdomen, then enters and feeds voraciously, avoiding vital organs for as long as possible to keep the spider alive. After several weeks, the larva pupates. Finally, the wasp becomes an adult and emerges from the spider's abdomen to continue the life cycle.
Adult tarantula hawks are nectarivorous. The consumption of fermented fruit sometimes intoxicates them to the point that flight becomes difficult. While the wasps tend to be most active in the daytime in summer, they tend to avoid high temperatures. The male tarantula hawk does not hunt; instead, it feeds off the flowers of milkweeds, western soapberry trees, or mesquite trees (females feed on these same plants, as well). Male tarantula hawks have been observed practicing a behavior called hill-topping, in which they sit atop tall plants and watch for passing females ready to reproduce. Females are not very aggressive, in that they are hesitant to sting, but the sting is extraordinarily painful.Tarantula hawk wasps are relatively docile and rarely sting without provocation. However, the sting—particularly that of P. grossa—is among the most painful of all insects, though the intense pain only lasts about five minutes.[8] One researcher described the pain as "...immediate, excruciating, unrelenting pain that simply shuts down one's ability to do anything, except scream. Mental discipline simply does not work in these situations."[5] In terms of scale, the wasp's sting is rated near the top of the Schmidt sting pain index, second only to that of the bullet ant, and is described by Schmidt as "blinding, fierce[, and] shockingly electric".[2] Because of their extremely large stingers, very few animals are able to eat them; one of the few that can is the roadrunner. Many predatory animals avoid these wasps, and many different insects mimic them, including various other wasps and bees (Müllerian mimics), as well as moths, flies (e.g., mydas flies), and beetles (e.g., Tragidion) (Batesian mimics).
Aside from the possibility of triggering an allergic reaction, the sting is not dangerous and does not require medical attention. Local redness appears in most cases after the pain, and lasts for up to a week.
