Tag Archive: scorpions


TAXONOMY
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Scorpiones
Family: Caraboctonidae (hairy scorpions)

Genus/species: Hadrurus arizonensis

GENERAL CHARACTERISTICS: Black cephalothorax with pale yellow rimmed segments; pale yellow abdomen, pincer-like pedipalps, and legs; pale under-surface; and abundant erect dark brown sensory hairs.

Largest of the nine scorpion species in North America. Length 10 to 18 cm (3.94 to 7.09 in)
Ave. weight 5 g (0.18 oz)

They molt 4 to 6 times before reaching adulthood in about 4 years.

4798723964_ae2cf48854_b

DISTRIBUTION/HABITAT: Mexico, western Arizona, southern California and Nevada, southwestern Utah. Found in semi-arid and arid habitats. Dig and live in deep burrows in soil during summer.

4798092901_1093a6cf23_b

DIET IN THE WILD: Although the venom of North American hairy scorpions is fairly week compared to most scorpions (about the same as a bee sting) these solitary predators immobilize and eat other scorpions, insects, spiders, small lizards and snakes. Forages at night for prey and mates.

4104007609_fe7dccca9a_b

REPRODUCTION: Scorpions reproduce sexually following an intricate mating behavior. Gestation lasts 6 to 12 months. Females give live birth to a large litter of 25 to 35 individuals. Occasionally, after mating, the female tracks down her mate and eats him.

LONGEVITY; Up to 25 years in captivity, ave, 7-10 in the wild.

PREDATORS: Owls and large lizards. When provoked they raise their legs and orienting themselves vertically, striking blindly at anything deemed threatening.

CONSERVATION: IUCN Red List, Not Evaluated

REMARKS: Venom in the scorpion’s stinger is used to subdue struggling prey and for self-defense. The venom is not very potent or painful to humans. Like all scorpions, has poor eyesight, excellent hearing, and a fine sense of touch (body hairs detect air and ground vibrations).

Color of Life note

Also like all scorpions, they fluoresce under ultraviolet light, a characteristic that allows scientists (and well-equipped backpackers) to detect them in the night and perhaps signals scorpions to avoid damaging UV light.

Ref. California Academy of Science Docent program 2015

IMG_0219

REFERENCES

California Academy of Sciences, Steinhart Aquarium, Little Water 2018 with exoskeleton

Ron’s flickr  https://www.flickr.com/photos/cas_docents/4770063879/in/album-72157608653175263/

Ron’s WordPress shortlink  http://wp.me/p1DZ4b-1zv

Animal diversity Web animaldiversity.org/accounts/Hadrurus_arizonensis/

Encyclopedia of Life eol.org/pages/3195616/details

Getty Images www.gettyimages.com/detail/photo/giant-desert-hairy-scorp…

 

TAXONOMY
Phylum Arthropoda
Class Arachnida
Order Scorpiones,
Family Scorpanidae (Scorpions)

Genus/species: Pandinus imperator

6976512905_11a36f5ae1_b

GENERAL CHARACTERISTICS: The largest scorpion known, (length to 20 cm (8 in); weight to 30 g (1 oz). Its black body bears large, blackish-red pincers with a granular appearance. The long tail, which arches back over the body, is tipped with a sharp curved stinger that delivers venom produced from a gland in the attached bulb.

DISTRIBUTION/HABITAT: West Africa Tropical forest and open savanna where it hides under rocks, burrows beneath the soil, or cohabits termite mounds.

GENERAL CHARACTERISTICS: The largest scorpion known, (length to 20 cm (8 in); weight to 30 g (1 oz). Its black body bears large, blackish-red pincers with a granular appearance. The long tail, which arches back over the body, is tipped with a sharp curved stinger that delivers venom produced from a gland in the attached bulb.

DIET IN THE WILD: It preys upon ground-dwelling insects, spiders, and other invertebrates as well as an occasional baby lizard, snake, or mouse. These large scorpions rarely sting small prey; instead they grasp the prey in powerful pincers and tear it apart. The venom is reserved for larger prey or defense.

REPRODUCTION/DEVELOPMENT: During mating, the male finds a suitable spot where he deposits his sperm packet, called a spermatophore. He then engages the female in an elaborate mating dance above the spermatophore with the male holding up the pincers of the female with his own, and carefully maneuvering her over the spermatophore, which she draws up into her genital pore. The eggs are fertilized, and the female carries them internally. After a 7 to 9 month gestation period, she gives birth to between 9 to 32 live young. The newborn climb onto the mother’s back, protected from predators by her size and aggressive behavior. Until the young are capable of hunting on their own, the mother feeds them by killing insects which are left on the floor of the burrow or other enclosure where the young can climb down and feed in safety.

PREDATORS: Predators include birds, bats, small mammals, large spiders, centipedes, large lizards, and other scorpions. Life span: 5 to 8 years.

7595589286_6713f5c418_b

REMARKS: Sensory hairs on the pincers and tail enable the scorpion to detect prey and danger through vibrations from the air and ground. Like all scorpions, it has poor eyesight (despite having 6 to 12 eyes), good hearing, a good sense of touch and is venomous.

ANIMAL ATTRACTIONS

flickr http://www.flickr.com/photos/cas_docents/sets/72157608653175263/with/7595589286/

WordPress Shortlink http://wp.me/p1DZ4b-Q4

Phylum Arthropoda, Class Arachnida, Order Scorpiones, Family Scorpanidae, Scorpions

Pandinus imperator

DISTRIBUTION: West Africa

HABITAT: Tropical forest and open savanna where it hides under rocks, burrows beneath the soil, or cohabits termite mounds.

APPEARANCE: The largest scorpion known, (length to 20 cm (8 in); weight to 30 g (1 oz). Its black body bears large, blackish-red pincers with a granular appearance. The long tail, which arches back over the body, is tipped with a sharp curved stinger that delivers venom produced from a gland in the attached bulb.

DIET:  It preys upon ground-dwelling insects, spiders, and other invertebrates as well as an occasional baby lizard, snake, or mouse. These large scorpions rarely sting small prey; instead they grasp the prey in powerful pincers and tear it apart. The venom is reserved for larger prey or defense.

REPRODUCTION/DEVELOPMENT:  During mating, the male finds a suitable spot where he deposits his sperm packet, called a spermatophore. He then engages the female in an elaborate mating dance above the spermatophore with the male holding up the pincers of the female with his own, and carefully maneuvering her over the spermatophore, which she draws up into her genital pore. The eggs are fertilized, and the female carries them internally. After a 7 to 9 month gestation period, she gives birth to between 9 to 32 live young. The newborn climb onto the mother’s back, protected from predators by her size and aggressive behavior. Until the young are capable of hunting on their own, the mother feeds them by killing insects which are left on the floor of the burrow or other enclosure where the young can climb down and feed in safety.

MORTALITY/LONGEVITY:  Predators include birds, bats, small mammals, large spiders, centipedes, large lizards, and other scorpions. Life span: 5 to 8 years.

REMARKS: Sensory hairs on the pincers and tail enable the scorpion to detect prey and danger through vibrations from the air and ground. Like all scorpions, it has poor eyesight (despite having 6 to 12 eyes), good hearing, and a good sense of touch.

flickr http://www.flickr.com/photos/cas_docents/6976512905/in/set-72157629304397467/

WORDPRESS SHORTLINK http://wp.me/p1DZ4b-qK

%d bloggers like this: