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#arthropod
vintagewildlife · 2 days
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Mating moths By: T. Angermayer From: Wild, Wild World of Animals: Insects & Spiders 1977
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tenspontaneite · 2 days
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Sigs make interesting bodies for themselves sometimes 🙏
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drafthearse · 1 year
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Grasshopper and Beetles. 1951. Leonard Baskin. Linocut. Plate 23 from A Little Book of Natural History. [source]
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sixteenseveredhands · 11 months
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Shellback Crabs: these crabs create their own shields out of clamshells; their semi-membranous bodies can be pressed into the contours of the shell, producing a suction mechanism that holds the shell in place
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The members of this genus (Hypoconcha) have a series of unique adaptations that facilitate this kind of camouflage behavior. Many of the Dromiidae crabs (e.g. hermit crabs, sponge crabs, shellback crabs, etc.) are equipped with a specialized pair of legs that enables the crab to hold a shell, sea sponge, and/or ascidian against their body, but shellback crabs also have a flexible, semi-membranous body that can be tucked more firmly into the contours of a bivalve shell, producing a suction mechanism that keeps the shell firmly locked in place.
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The body of the shellback crab is also covered in a very fine layer of hair-like structures called setae, and when the crab presses itself against the shell, these membranous "hairs" can take on an almost translucent appearance, particularly around the margins of the crab's body.
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I recently posted some photos/info about some of the crabs in the genus Lamarckdromia (which belongs to the same family) and as I was doing the background research for that post, I was just kind of mesmerized by all of these weirdly adorable crabs that seem to exist within the Dromiidae family tree. Each genus has its own unique adaptations that allow the crabs to use specific materials for camouflage -- some of them use living sponges, clamshells, ascidians, etc.
And I could not stop laughing at the little faces on these crabs. They've all got the same bemused/indignant expression...as if some random asshole has just walked up to them, shoved them over, and announced to the entire ocean that there's a crab hiding beneath that disguise; as if that actually happens to them quite a lot, and they're getting really sick of it.
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Sources & More Info:
Crustaceana Monographs: Comparison of the Shell-Carrying Behaviors of Desmodromia, Conchoecetes, and Hypoconcha (the relevant info is on page 191)
South Carolina Department of Natural Resources: Shellback Crabs and their Larval Stages (PDF)
South Carolina Public Radio: Shellback Crabs
Again, I don't normally feature crustaceans on my blog...but I really couldn't resist this one.
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nippongoto · 2 months
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アオスジコシブトハナバチ
群れで眠るところにやっと出会えた。メタリックターコイズブルー縞々集団サイコー。
R5.11
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snippit-crickit · 5 months
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i present to you the explosion of color and stick notes that is my sketchbook, look at this harrier du bois i intended to post only this disco elysium thingy but i already treat tumblr like a pit for my more sketchy stuff so catch these too
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bedupolker · 16 days
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Climb time! Feat. @bowelfly's magnificent weevzard, Quercus
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elntangle · 8 months
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isopod espionage
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animals-why · 7 months
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Giant African millipede at the Denver Zoo!
The keeper said that because these guys would thrive in Colorado (of all places), they have to have a special permit as well as incinerating anything the 'pedes might have had a chance to lay eggs in! We got to pet them!
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knuppitalism-with-ue · 2 months
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Results from the Flocking #paleostream!
Toxodon, Pachycephalosaurus, Ornimegalonyx and Parioscorpio
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alphynix · 10 months
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The tuzoiids were an enigmatic group of Cambrian invertebrates known mostly just from their spiny bivalved carapaces. Although hundreds of fossils of these arthropods were discovered over the last century or so, only vague fragments of the rest of their bodies have been found even in sites usually known for preserving soft tissue impressions.
…Until late 2022, when several new specimens from the Canadian Burgess Shale deposits (~508 million years ago) were described showing tuzoiid anatomy in exceptional detail, finally giving us an idea of what they looked like and where they fit into the early arthropod evolutionary tree.
Tuzoiids like Tuzoia burgessensis here would have grown up to about 23cm long (~9"). They had large eyes on short stalks, a pair of simple antennae, a horizontal fluke-like tail fan, and twelve pairs of appendages along their body – with the front two pairs at the head end being significantly spinier, and most (or all) of these limbs also bearing paddle-like exopods.
The large carapace enclosed most of the body, and was ornamented with protective spines and a net-like surface pattern that probably increased the strength of the relatively thin chitinous structure.
Together all these anatomical features now indicate that tuzoiids were early mandibulates (part of the lineage including modern myriapods, crustaceans, and insects), and were probably very closely related to the hymenocarines.
Tuzoiids seem to have been active swimmers that probably cruised around just above the seafloor, with their stout legs suggesting they could also walk around if they flexed their valves open. The arrangement of their spiny front limbs wasn't suited to grabbing at fast-swimming prey, but instead may have been used to capture slower seafloor animals or to scavenge from carcasses.
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NixIllustration.com | Tumblr | Twitter | Patreon
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vintagewildlife · 3 days
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Black widows mating By: John A. L. Cooke From: Wild, Wild World of Animals: Insects & Spiders 1977
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styllwaters · 4 months
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saw your post about accepting art requests. Can you draw the early Devonian marellid arthropod Mimetaster? i think they look cool and weird in a silly way :O
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Weirdest normal girl I've ever seen
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drafthearse · 1 year
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Millipede, Gorongosa National Park, Mozambique.
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donutdrawsthings · 2 years
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FANTASTIC NEWS! the most cambrian arthropod of all time has been discovered a few days ago. It's called Balhuticaris Voltae
source: https://youtu.be/TCwYC3YWyZI
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After weeks of work, I'm excited to finally present this Predation triptych series all together!
Features the Ichneumon Wasp, the Antlion, and the Centipede with some of their prey of choice!
Prints of these can be found here: https://www.inprnt.com/gallery/cuttledreams/
Commissions available: https://ko-fi.com/cuttledreams
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