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#spiders

9 Beiträge9 Beteiligte0 Beiträge heute
Öffentlich *
The Gardener

Spiders have evidently roused from winter slumber - there's immense numbers of silk lines in the grass, all generally parallel with prevailing winds. I assume they're guide lines or test lines of some sort? Any idea which spiders are responsible?

Internet searches just bring up pest control options or orb-weaver info, neither of which are what I'm looking for.

Maybe @nev knows?

#spider#spiders#arachnids
Öffentlich
michael

23-Apr-2025
A new map of arthropod evolution, from #fossils to #embryos

New study sheds light on how #insects, #spiders, #crustaceans, and other #arthropods evolved their distinct body structures. By tracing these patterns back to ancient embryonic processes, the research uncovers a deep evolutionary logic behind the segmented #bodyPlans that define the world’s most diverse animal group.

eurekalert.org/news-releases/1 #science #evolution #development

EurekAlert!A new map of arthropod evolution, from fossils to embryosNew study sheds light on how insects, spiders, crustaceans, and other arthropods evolved their distinct body structures. By tracing these patterns back to ancient embryonic processes, the research uncovers a deep evolutionary logic behind the segmented body plans that define the world’s most diverse animal group. The findings challenge long-held assumptions and offer a bold new framework for understanding how developmental mechanisms shaped the evolution of arthropods over hundreds of millions of years.
Öffentlich
neville park

I almost forgot it was #MiteMonday! Inspired by @zorbama's shot of a running crab spider, clover mite, and midge all together (veganism.social/@zorbama/11437), here's a running crab spider (_Philodromus_) I found feeding on a clover mite (_Bryobia_). I don't actually often find many arthropods feeding on the adults, though I've seen predatory _Anystis_ mites eating the eggs.

A small, flat, crablike grey-brown spider perched on a large rock with something light red and leggy in its jaws.
A closer shot from a better angle shows the dark blueish body and thin light red legs and mouthparts of a clover mite.
#DailyMitePic#Mitestodon#mites
Öffentlich
neville park

Both my current spiders (cobweb spider and cellar spider) molted this week!

OK, so you know how instead of gradually turning rust-red like iron does, copper turns from, well, copper to light blueish-green, and how copper compounds will turn a flame blue-green? Well, arthropod hemolymph (their equivalent of blood) uses copper-containing proteins to transport oxygen, and so spider "blood" is blueish-green—like how our iron-rich blood is red.

You usually can't see it, but right after molting this spider is unusually translucent (the exoskeleton is still hardening up) and the legs still have a distinct blue-green hue.

Bonus pic: ._.

#DailySpiderPic#SpidersOfMastodon#spiders
Öffentlich
Le Bottin des Jeux Linux

🕹️ Title: Unvanquished
🦊️ What's: A libre team-based FPS/RTS game pitting humans vs aliens
🏡️ unvanquished.net
🐣️ github.com/Unvanquished
🔖 #LinuxGaming #ShareYourGames #Flagship #RTS #FPS #SciFi #Spiders
📦️ #Libre #Bin #Arch #RPM #Deb #Flatpak
📖 Our entry: lebottinlinux.vps.a-lec.org/LO

🥁️ Update: 0.55.3
⚗️ New Mod 🏞️
📌️ Changes: unvanquished.net/unvanquished-
🦣️ From: idtech.space/objects/6830ff92-

🏝️ youtube.com/embed/GdcWH52z8KM
🦝️ youtube.com/embed/5Zq_kVlqt34
💥️🎲️👥️ youtube.com/watch?v=nyzYabXS4W
🎲️ vdo.unvanquished.greboca.com/v

🕶️ A human in armor flying with a jetpack, illustrating a new feature (at v.0.55.2): robots can fly too. 📚️ Unvanquished is a libre, multi-platform FPS and RTS, with fast and tactical gameplay, oriented towards team-based multiplayer (single player with bots is nevertheless available), opposing humans and alien arachnids. Players choose one of the 2 camps, with each one having a different experience and field of action. The humans have the advantage of long range shooting, the aliens the advantage of speed and stealth. The objective is to destroy the enemy base, to prevent the opposing team from reappearing (on their pods; these can be moved) before the end of the game time. It uses the NetRadiant map editor. A very high quality libre game.
Öffentlich
Márton Salomváry

I love observing small details of wildlife I never noticed before, although it’s happening at my doorstep.

Today I watched a tiny (~5mm) jumping spider (not sure the species) holding onto a fly larger than itself for several minutes during its violent death agony.

When the fly stopped moving and the spider digesting, another spider appeared wanting to claim a share of the prey.

Turns out these spiders can jump while holding onto their lunch:)

#wildlife#spiders
Öffentlich
Luigi :donor:

This reddit comment on #spiders #ants and #bees is quite interesting

reddit.com/r/NatureIsFuckingLi

Copying it here if you don't want to click, links with reference at the end might be broken.

-- /u/lamplorde --

So I'm gonna bore people because I'm a bug nerd but:

There is a lot more going on in the insect world than we give credit to, because we simply dont have the technology to accurately study them at that size. Its funny to think about when we have microscopes that let us see the fundamental building blocks of the universe, but when it comes to insect physiology and how their brains work we know very little.

For instance, studies have lead to the theory that Bees most likely do have emotions. It was a simple study, done using Blue Flowers and the fact that Bees still kept a "heightened state" around the color blue when they started to associate it with food. But it doesnt stop there: there were also studies done on Ant colonies regarding their sleep schedules and we came to find that Carpenter Fire Ant Queens sleep for about the same amount of time as us humans, just in lots of little naps. But the interesting part of that one is not just how much they sleep but how. Scientists observed the Ants antenna twitching very similarly to our eyes during REM sleep, leading to the theory that Ants might dream. One last fun tidbit: Jumping Spiders are opportunistic pack hunters. They spend most of their life solitary, but are known to hunt together in mated pairs, becoming extremely effective together with the smaller Male often distracting the prey while the Female pounces. The odd part comes from the fact that they appear to communicate before hunts via a "language" done through foot stamping to plan. Not only that but Jumping Spiders are one of the few insects that display an understanding of Object Permanence, ranking them at least a little above an infant (not that that is saying much).

At the end of the day, we have so much going on below our feet. Entire little lives that we know so little about. Its an interesting and vibrant world.

EDIT By popular demand, things I should have included to begin with (the all important sources):

Bees and Emotion

Ants and Dreaming (My apologies, it was Fire Ants, not Carpenters

Jumping Spiders and Object Permanence

Which, when trying to find my old sources funnily enough brought me to a new (to me) study that Jumping Spiders might also dream

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