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Julien Tchilinguirian

@jtchi.bsky.social
279 followers 284 following 24 posts

M.S.c in conservation ecology & research in Arachnology, France. I've always been passionate about the biology and ecology of the arachnids of the world. Particularly fond of Linyphiidae, Scorpions, Uropygi, Amblypygi & others. linktr.ee/jtchi

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Reposted by Julien Tchilinguirian
Amypteride🏳️‍⚧️🔻🕷🦂 @amypteride.bsky.social · 17/06/2026
What time is it? It’s #Cheliceratime! A rare blind european scorpion today with the participation of @jtchi.bsky.social: Belisarius xambeui! All the basic infos are here but if you want to learn more, there’s more in the thread below!⬇️🧵 #scorpion #pyrenees #arachnid #sciart #bugsky #invert
Only found in the Eastern Pyrénées between France & Spain, this rare species is a fully blind scorpion living in dark environments, especially near or in caves.

Size: 3-ish cm of body length without the pincer claws
Time period: Holocene (present day)
Conservation status: Least concern/Near threatened/Vulnerable?

The animal drawn is a pale looking scorpion without any eyes
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Julien Tchilinguirian @jtchi.bsky.social · 30/05/2026
Me too mossworm, me too ..
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ISYEB @isyeb.mnhn.fr · 03/02/2026
Bilan très productif des activités de Taxonomie de l' @isyeb.mnhn.fr pour l'année 2025. L'axe Taxonomie affiche 236 articles et ouvrages traitant de taxonomie. 365 espèces nouvelles soit une espèce nouvelle décrite par jour de l’année ! Pour en savoir+ suivez le lien 👉 isyeb.mnhn.fr/fr/actualite...
isyeb.mnhn.fr
AXE TAXONOMIE 2025
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iNaturalist @inaturalist.bsky.social · 06/01/2026
Consider your sign to stop and stare at logs a little more often because just LOOK at this glorious velvet mite! (Third photo is where it was spotted.) 📷 jeremyhegge on iNaturalist 📍 Australia 🔗: www.inaturalist.org/observations... #ObservationOfTheDay
A fuzzy, bright red mite crawls along a log.A fuzzy, bright red mite crawls along a log.There is a fallen log surrounded by leaf litter and tall, slender trees.
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Climate.us @climate.us · 04/09/2025
EXCITING NEWS! The Climate.us page has officially launched. Here you will be able to read more about us, our plan, updates, see what real people are saying, view our news coverage, and of course find ways to take action. We look forward to your continued support.
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Julien Tchilinguirian @jtchi.bsky.social · 28/03/2025
A very interesting organism, They superficially look quite similar to Trogulidae opiliones
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Russell Garwood @russellgarwood.co.uk · 28/03/2025
For #FossilFriday, meet Plesiosiro. This is a ~315 million year old weird arachnid, found near Birmingham in the UK. It's a lovely fossil but even so figuring out where it sits on the arachnid tree of life has been... annoyingly challenging. Nowadays, we are fairly confident that it... ⚒️🧪🦀🦑 #evosky
Two balck and white photographs showing the dorsal (back) surface of a fossil in a rock. The fossil is darker than the surrounding rock, and has a body starting with a bit of a point, then a front half, like a spider except a bit suqarer, and a posterior that - unlike a spider - is segmented. It was some legs visible, but much of them is buried in the rock. There is a (4mm, if you're intetested) scale bar on the image.A black and white reconstruction of this animal in pen, showing if from above, its underside, and in an angled face on view.
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Carl T. Bergstrom @carlbergstrom.com · 19/03/2025
1. For the past thirty years I've had the best job in the world. 
I've had the opportunity to follow my curiosity; explore the workings of nature and society; mentor students and junior colleagues in the same process; and teach generations of students about it all.
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British Arachnological Society @britishspiders.bsky.social · 16/03/2025
For the finale of our spider ID resources thread, at the hardcore end of the week's spectrum we have 20 'difficult species' accounts for groups where the species are very similar and difficult to distinguish: download from our website at srs.britishspiders.org.uk/portal.php/p... #spiders #arachnids
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Plantecarnivore @plantecarnivore.bsky.social · 12/03/2025
J'ai mis un peu de temps à traiter les photos, mais début février, j'ai croisé par hasard ce mâle de mygale Atypus sp qui se baladait malgré le froid ! On la trouve nativement sur l'hexagone, et celui-ci faisait autour de 10/12mm de corps. Le reste du temps, elle reste bien planquée dans son terrier
vue de 3/4 face, on voit ses très grosses chélicères et ses crochets qui s'actionnent verticalementvue de haut, on voit ses tout petits yeuxvue de face
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AJCann @ajcann.bsky.social · 10/03/2025
Maso sundevalli. #Arachnids #Spiders #VC55
Maso sundevalli femaleMaso sundevalli epigyne
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Valérie Masson-Delmotte @valmasdel.bsky.social · 05/03/2025
It’s dispiriting to see the future leaders of climate research at institutions like GFDL fired indiscriminately (...) Artificial intelligence cannot compensate for a lack of human intelligence www.science.org/content/arti...
science.org
NOAA firings hit the birthplace of weather and climate forecasting
Dismissed researchers were improving severe weather predictions
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Julien Tchilinguirian @jtchi.bsky.social · 03/03/2025
Heya, I'm an arachnologist: 70% Ethanol is the standard for whole specimens, + a leg in pure ethanol if DNA analysis are planned. I usually put genitalia is a small microvial (0.2 ml) with the specimen.
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AJCann @ajcann.bsky.social · 03/03/2025
Still plenty of Microneta viaria out there in what remains of the leaf litter. #Arachnids #Spiders #VC55 #UKWildlife #macrophotography #macro #OMSystem
Microneta viaria male 
OM System OM-5
OM SYSTEM M.Zuiko Digital ED 90mm f3.5 Macro IS PRO 
Godox V680-O 
Microneta viaria male palp 
OM System OM-5
OM SYSTEM M.Zuiko Digital ED 90mm f3.5 Macro IS PRO 
Godox V680-O
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James Chisnall @chizz13.bsky.social · 02/03/2025
Here we have a male Walckenaeria acuminata just look at it, a common spider but how fasinating is it! @britishspiders.bsky.social #spiders #arachnids #walckenaeria
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British Arachnological Society @britishspiders.bsky.social · 01/03/2025
Species of interest - Typhochrestus digitatus. This small linyphiid is mature principally through the winter unlike most other outdoor UK spiders, which mature in late spring or autumn. This reduces competition from other species but prey is likely harder to find. Photo by @tylanberry.bsky.social .
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Julien Tchilinguirian @jtchi.bsky.social · 27/02/2025
Nausicäa of the Valley of the Wind !
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Piotr Naskrecki @piotr-naskrecki.bsky.social · 17/02/2025
Some of the coolest and perhaps most under-appreciated African carnivores are solifuges. The ferocity of these incredible arachnids, a.k.a. camel spiders or sun spiders, easily matches that of the wild dogs and, just like the canines, they can dismember their prey in a matter of seconds.
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L. Brian Patrick @lbrianpatrick.bsky.social · 08/02/2025
Do you have any wolf spiders (Lycosidae) collected in the last couple of years? If so, I am looking for specimens from any species and any location *in the world* to add to a genetic study of the family. Let me know if you think you can help!
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Julien Tchilinguirian @jtchi.bsky.social · 11/02/2025
Salut :) I do not have any H. radiata but with spring I should be able to go out and collect some, I do have any of the specimens listed here in collection : www.inaturalist.org/observations...
inaturalist.org
Observations
Wolf Spiders by Julien Tchilinguirian
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Julien Tchilinguirian @jtchi.bsky.social · 11/02/2025
(not in pure ethanol but max. 3 years old)
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Julien Tchilinguirian @jtchi.bsky.social · 11/02/2025
I have various material of Lycosidae from Southern France if also of interest
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Julien Tchilinguirian @jtchi.bsky.social · 08/02/2025
It's to catch smaller preys
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Evelyndroid's Aperture Science and Bugge-Finding 🏳️‍⚧️🕷️ @apsciencebylyn.bsky.social · 08/02/2025
*hooded cultists chanting* Rake-legged mite! Rake-legged mite! Rake-legged mite! Oh and a tiny bristle millipede, all with sand grains for scale. Finally got to find bugs this week. 🤎
Small lumpy brown mite, with black legs, the 1st pair of which are lined with spines like that of a metal rakeCloser shot of one of the creature's rake legsThe mite, side by side with a tiny pale millipede with bristles at each body segment and a longer bristle tail
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Julien Tchilinguirian @jtchi.bsky.social · 08/02/2025
Caeculidae are my favorite mite family, I have some I still need to ID ..
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Marshal Hedin @mhedin.bsky.social · 07/02/2025
welcome to the world new spider genus Siskiyu. you've been lurking in the dark, magical woods of far northern California for millenia. Now the humans have finally gotten around to telling your story, at least in part this research was funded by the NSF OA here zookeys.pensoft.net/article/1402...
a pale, elegant long-legged spider, with whispy silk, under a stone
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Gil Wizen @wizentrop.bsky.social · 06/02/2025
Whip spider (Paraphrynus laevifrons) covered with chloropid fly puparia. The parasitoid fly attacks the eggs carried by the female. When done, the maggots climb on the "childless" mom's back and pupate. She protects them during this period thanks to her motherly instincts.
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Russell Garwood @russellgarwood.co.uk · 31/01/2025
For #FossilFriday may I present to you an amazing scorpion, Pulmonoscorpius kirktonensis. It may look like the moult of a modern species, but these are actually ~330 million year old fossils, dissolved out of a rock from 🏴󠁧󠁢󠁳󠁣󠁴󠁿 using acid. ⚒️🧪🦀🦑 #evosky
A black and white photograph of a fossil scorpion, the front towards the right. Y ou can see mouthparts (chelicerae and pedipalps with pincers), four walking legs, and then a body and tail. A colour photograph of a fossil scorpion, this time with the top pointing upwards. It also has nice pedipalps and a good body, but the limbs are a bit more scrappy than the other picture. It does have an impressive sting though. A black and white reconstruction of this super cool fossil species by Jason Dunlop. It's beautifull stippled, and shows the scorpion in dorsal view, with the front upward. It looks a fair bit like a modern scorpion. The man is an amazing artist.
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EntomoNews @collemyria.bsky.social · 26/01/2025
Conférence de Raphaël Jeanson à Cahors « Dans la tête d’une araignée » le 28 janvier 2025 sco.lt/52oZI8 Carrefour des Sciences et des arts
sco.lt
[Conférence] « Dans la tête d’une araignée » – Carrefour des Sciences et des arts | Variétés entomologiques
LA CONFÉRENCE EN QUELQUES MOTS : Les araignées sont injustement craintes et redoutées. On les imagine solitaires et agressives. Mais qu’en est-il réellement ? Les araignées sont-elles dangereuses pour...
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caeculus.bsky.social @caeculus.bsky.social · 18/01/2025
I was really excited to be able to key out this tiny (395 micron) mesostig mite I found in coast redwood leaf litter all the way to species - not an easy task for most mites. Meet Cosmozercon setosus, slide mounted in Hoyer's medium. 🤩
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Russell Garwood @russellgarwood.co.uk · 17/01/2025
Word up. It's #FossilFriday. This week, meet Eophrynus. This is a ~315 million year old member of the trigonotarbids - an extinct group, related to spiders, whip spiders, and whip scorpions. Check out the spines! I love this fossil. ⚒️🧪🦀🦑 #evosky
An image of a fossil arachnid shown in doral (left) and ventral (right) view. The photos are black and white and the animal itself looks a bit like a spider, although it isn't. It has a tear drop chaped body covered with dense spines, and an anterior point. It doesn't have the narrowing between the front and the back of the body that spiders do. A CT scan of the fossil described from the photos - this has a white body and purple limbs, and is rendered on a black background. A coloured reconstruction of this fossil, which is a dark red all over, with yellow spines.
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Julien Tchilinguirian @jtchi.bsky.social · 15/01/2025
Scorpion folks !!! My people
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Julien Tchilinguirian @jtchi.bsky.social · 13/01/2025
And In some Theridiid the just emerged male rips up one of its pedipalps to loose some weigh !
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Graeme Lyons @graemelyons.bsky.social · 10/01/2025
1/2 #speciesaday no. 519 is Troxochrus scabriculus. A small, local money spider that I almost always only find on chalky arable fields on the Downs (where it can be quite numerous), using the suction sampler. Although I have had it on amenity grassland in central Brighton too.
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Jess Marsh @jessmarsh.bsky.social · 25/11/2024
A feast about to happen: the very rare and critically endangered Kangaroo Island Assassin Spider showing off her impressive mouthparts, whilst carrying around her 8-legged prey 🕷️🧪 #invertebrate #conservation #biodiversity #spider #australia
A feast about to happen. A small spider brown / beige spider with a tall head region carries an even smaller spider in her very long mouthparts.
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Morgan Tingley @mwtingley.bsky.social · 08/01/2025
The insanity of being a fire ecologist in the epicenter of a major fire event, bags packed and ready to evacuate, watching active fire from my window, while taking media requests and explaining to the public, for the 100,000th time how climate change is largely responsible for this
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Sean McCann @ibycter.bsky.social · 08/01/2025
Just a wicked cool ground spider from northern regions, this is Gnaphosa brumalis, found in Makkovik, NL.
A large brown gnaphosid spider, with cool tiger stripes on the butt, shown against whiteSame spider, viewed from above. The patterning on the abdomen is pretty sweet. Epigynum of the gnaphosid spider, I don't really know how to describe this.
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Plantecarnivore @plantecarnivore.bsky.social · 06/01/2025
Now we're into a new year, I'd like to advertise once again this project in which I have put so much ! (english subtitles available) If you love animals and especially if you're into bugs, you'll like it ! #invertebrate #spider #nature #wildlife #doc #documentary #japan #crab #bat #snake #entomology
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Brendan O'Loughlin @brendanoloughlin.bsky.social · 01/01/2025
@forthespiders.bsky.social Mystery Linyphiid! A friend of mine collected this male near Tulsa, Oklahoma (more pics in comments) It keys to either Sphecozone or Silometopoides, but neither is a good match
Top down view of spiderSide view showing the head protuberance and palps
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Gen Conway @trigonotarbida.bsky.social · 28/12/2024
#Phreatoicopsis raffae is a strange #isopod in the suborder Phreatoicidea. These isopods mostly live in groundwater, but Phreatoicopsis is semi terrestrial. They are endemic to #Gariwerd, or the #Grampians, and unfortunately the place I saw it just burnt in a bushfire :( #InverteFest #ArthropodArt
A drawing of Phreatoicopsis raffae, a strange isopod. It is walking through damp moss, and there are purple Utricularia grampiana floerts in the foreground
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Marc A. Milne @forthespiders.bsky.social · 27/12/2024
It's been 97 years. In early 1927, arachnologist William Barrows was collecting spiders near Gainesville, Florida and came across a new species of armored dwarf spider that he later named Floricomus bishopi. It was never seen again. That is until @tyuge.bsky.social found it again in GA! Behold!
Anteriolateral view of a male of the spider, Floricomus bishopi.Dorsal view of a male of the spider, Floricomus bishopi.
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Gabby Palomo, PhD @gabspalomo.bsky.social · 26/12/2024
Ok people. I’m drawing silhouettes this afternoon. If you have a paper coming up and you are in need of a #silhouette please let me know and I will have it ready today. As always I upload all my silhouettes to phylopic.org I also have tutorials on how to put a silhouette in a plot in R.
phylopic.org
PhyloPic
PhyloPic is an open database of free silhouette images of animals, plants, and other life forms, available for reuse under Creative Commons licenses. Download silhouettes for use in educational materi...
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Naufal Urfi Dhiya'ulhaq @kalakemangga.bsky.social · 25/12/2024
Just identified this observation as Serendib, a rather rare ant-mimicking corinnid spider. This particular one seem to be mimicking D. gigas, but with its abdomen as the head www.inaturalist.org/observations...
inaturalist.org
Genus Serendib
Serendib from Bahagian Miri, Sarawak, Malaysia on December 15, 2024 at 12:06 PM by Foo Chuan Wei
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Altmetric @altmetric.com · 19/12/2024
THREAD This Is The Story Of The The Pernicious Rise of AI-Generated Papers and their Online Impact An Incomplete History Told In The Voice of Documentarian Adam Curtis 1/31
Adam Curtis Title Card: We Too Are Trapped In A System. Text over a background of a large office building
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Morgan M. Oberweiser @mmoberweiser.bsky.social · 20/12/2024
PS, Schizomida do this too 🥰 So cute! (figure from bioone.org/journals/the...) #arthropods #arachnids #arachnida
A compound figure from a scientific paper, with both drawings and photographs of short-tailed whip scorpions carrying their brood on their opisthosoma. Some panels show eggs attached to the underside of the opisthosoma, and others show first-instar hatchlings encircling the raised body segment.
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Julien Tchilinguirian @jtchi.bsky.social · 20/12/2024
Which country ? Ricinuleid can be found in rotting wood and humid leaf litter, palpigradi are by far the hardest order to find, only endogean or deep inside caves ...
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Julien Tchilinguirian @jtchi.bsky.social · 20/12/2024
Fantastic work to you all ! The evolution of the smaller orders of arachnids is fascinating
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Morgan M. Oberweiser @mmoberweiser.bsky.social · 20/12/2024
My good friends @jellybb.bsky.social and @rianbraig.bsky.social have finally both made it to Bluesky, so now it's time to re-share our passion-project paper from earlier this year! We looked at cool morphological trends over time in short-tailed whip scorpions! sjpp.springeropen.com/articles/10....
A figure from a scientific publication with a geological time scale at the bottom (Left to right, Carboniferous to today). It shows morphological size trends in representatives of Schizomida, as well as an outgroup species and a related species, over geological time. While the outgroup and related species show miniturization and diversification from the Carboniferous to the Cretaceous, representatives of Schizomida show a secondary size cain from the Cretaceous to the modern day.
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Julien Tchilinguirian @jtchi.bsky.social · 20/12/2024
I love them but 700 Linyphiid species in the UK ?! Wow
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franz @franzanth.bsky.social · 20/12/2024
Have yourself a merry little Carboniferous. #Art #SciArt #PaleoArt #Inverts
a pine tree with bugs hanging all around it. at the very top is a dragonfly-like meganeura with open wings, circling the base is the giant millipede arthropleura. on the branches sit various insects and circular pine cones.
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