#Chelicerata

[have-you-seen-this-animal]

psst not sure if you’ve done this one before but could you do the bunny harvestman spider? i love them sm

Sure! This one was hard to find info on. Anyone is welcome to add info in reblogs or comments (as always!)

Both photos from Andreas Kay, who seems to have taken the vast majority of the photos of this species I could find!

[gray-warden]

I just realized I never posted photos of this really pretty harvestman i came across a while back. Note the green pedipalps and the dark and light spots on its back.

[life-on-our-planet]

Several different types of creatures go by the name "daddy long legs", one of which are the family Pholcidae, also known as cellar spiders. They're found on every continent on Earth except Antarctica, preferring to live in human dwellings generally high out of reach where they feed on various other small invertebrates. © Nature Clearly

[rattyexplores]

S. violacea, a very round species of jumping spider.

14/01/24 - Simaethula violacea

QLD:WET

[alphynix]

Tachypleus syriacus was a horseshoe crab from the late Cretaceous (~100-95 million years ago) of what is now Lebanon.

Closely related to modern tri-spine horseshoe crabs, it displayed a similar level of sexual dimorphism. Females grew to at least 25cm long (~10"), with rounded front edges to their carapaces and shorter rear spines, while males were around 30% smaller with a scalloped shape to the front of their carapaces.

One recently described female specimen also preserves distinctive nodules around the rim of its carapace, which may represent some sort of sensory structure.

This particular specimen is also unique for preserving a coprolite in the process of being expelled from the horseshoe crab's body – that's right, it died while pooping.

———

NixIllustration.com | Tumblr | Patreon

References:

Bicknell, Russell DC, et al. "A unique example of the Late Cretaceous horseshoe crab Tachypleus syriacus preserves transitional bromalites." Alcheringa: An Australasian Journal of Palaeontology (2024): 1-6. https://doi.org/10.1080/03115518.2024.2348748

Bicknell, Russell DC, et al. "On the appendicular anatomy of the xiphosurid Tachypleus syriacus and the evolution of fossil horseshoe crab appendages." The Science of Nature 106.7 (2019): 38. https://doi.org/10.1007/s00114-019-1629-6

Lamsdell, James C., and Scott C. McKenzie. "Tachypleus syriacus (Woodward)—a sexually dimorphic Cretaceous crown limulid reveals underestimated horseshoe crab divergence times." Organisms Diversity & Evolution 15 (2015): 681-693. https://doi.org/10.1007/s13127-015-0229-3

[mg549]

spiders

around 2 years ago, i had the idea of "if i were put in charge of a doll line, what would i make?" i settled on the idea of spider gijinkas a la how monster high's characters were inspired by universal movie monster classics, but instead i would be. inspidered. with the selling point idea being 1. VERY different than any other line while still being fashion-forward 2. educational-designs reference lots of Spider Facts and associated webseries would do the same to teach thru characterizations 3. teaching kids to not fear spiders either 4. catering to Weird Bug Kid Demographic (untapped market)

obviously the main cast had to have 8 characters (the spider number), so i chose a variety of spiders that are Iconic plus a few personal faves. pls appreciate their eight eyes that reflect the placement of eyes on the actual species of spiders, their little pedipalps, their big spider butts, and that they all have 6 arms to match the eight legs of the spider overall

unfortunately this idea never made it past the base thumbnailing idea, so Here They Are Now I Still Love Them

[petsemataries]

the end of march has bloomed little little arachnids

and a big ant colony under a rock i flipped!!!!!! woah!!!!!! an ideal society!!!!

[snototter]

A purple pink-toe tarantula (Avicularia purpurea) emerges from its shelter in Ecuador

by Andreas Kay

[jupiterswasphouse]

[PHOTOS TAKEN: FEBRUARY 28TH, 2025 | Image IDs: Two photos of a brown and white fishing spider on a dirty white stone surface /End IDs.]

[todaysbug]

February 12th, 2024

Giant Whip Scorpion (Mastigoproctus giganteus)

Distribution: Found in the southwestern United States, including New Mexico, Arizona, Oklahoma and Texas, down through much of Mexico, as well as Florida.

Habitat: Found in arid habitats; deserts, scrub forests and grasslands, where they take shelter beneath plant debris, in rock crevices or in abandoned animal burrows. Can be found living at altitudes of up to 6000 metres.

Diet: Carnivorous; feeds on a variety of invertebrates, including cockroaches, crickets, millipedes, other arachnids, worms and slugs. Has also been documented feeding on small toads and frogs.

Description: Though their name would suggest otherwise, giant whip scorpions are more closely related to spiders than they are to true scorpions. This species is also referred to as the giant vinegaroon, as it has the capacity to spray a substance containing high concentrations of acetic acid, the same acid found in vinegar. They're able to spray up to 19 times in a row before their pygidial gland is depleted (though it fills up pretty fast; they're usually ready to go again the very next day!). This spray does not usually cause long-term harm, but can occasionally cause the skin to blister, as well as intense pain if it gets into the eyes. Luckily, they only spray when touched—as long as you remain at a respectful distance, you'll be okay! They may also deliver a painful bite or pinch with their powerful chelicerae, though they have no venom.

This species is usually considered to be beneficial, as it often hunts other undesirable arthropods, such as scorpions, as well as agricultural pests that may threaten crops. Giant whip scorpions are also fairly common in the exotic pet trade, as they're non-venomous and have a long lifespan; males can live to 10 years, and females, twice that long!

Images by Bryan Maltais and Diego Barrales.

[scrybird]

Aaaaaand send post.

[have-you-seen-this-animal]

I would like to humbly request the red widow (Latrodectus bishopi). It’s only found in the scrublands of central and southern Florida and is currently a threatened species, most likely due to habitat loss.

Wow, they're gorgeous!

They are considered vulnerable globally, and imperiled in the state of Florida.

[patheticmosasaur1]

today's invertebrate.........stylopallene tubirostris

she collects trinkets and doohickeys from all around the globe! such thingamabobs include: a glob of bile, the gateway to heaven™, a gun (with one bullet), too many ceramic pots to count and so much more

one of these objects, a 5ft tall statue depicting a horrid beast, was even titled as "most important item in history"!!!!

.....well that was before she lost it in a sponge one day

whoops

glorpiness rating: ★■♡¡¡¡¡○○○

source

[chordata-art]

the crab man

[rattyexplores]

10/09/21 - Photos 1-2 - C. baehrae

04/03/23 - Photos 3-4 - C. bitaeniata

24/11/23 - Photos 5-6 - C. thalassina

23/06/23 - Photos 7-8 - C. micarioides (different specimens)

So far, these are the four species of Cosmophasis I've come across. Lovely iridescent jumping spiders.

10/09/21-24/11/23 - Cosmophasis spp.

QLD:WET-BRB

[overdoso]

Aranha solar ou escorpião do vento, os solífugos são invertebrados de oito patas que pertencem à ordem Solifugae, uma das ordens menores da Classe Arachnida, Subfilo Chelicerata, Filo Arthropoda, que inclui cerca de 900 espécies descritas, 67 conhecidas da América do Sul.