Yagania chuanisin, un nuevo género y especie de araña endémica de la Isla de los Estados, Argentina. Vive en bosques fríos y húmedos y se ha separado de sus parientes más cercanos hace 12 millones de años. Para leer el artículo completo: www.mdpi.com/1424-2818/18...

A few critters found during the last fieldwork in Australia

Take a close look at this picture. What an interesting coin or artifact, you probably think 🤔. Such interesting detail, intricately carved or molded 🧐 ... HAHA sucker, you're looking at a SPIDER'S BUTT. Let's meet Cyclocosmia ricketti, the Chinese hourglass spider. CW: spiders & their butts

Anotem essa informação pq raramente ela é repercutida na imprensa quando falam de anistias e dosimetrias: 3 anos após o ocorrido, só restam 179 presos do 8/1.

Bora apoiar uma boa causa! Assine aqui e ajude a proteger uma floresta petrificada no Piauí. Estes troncos são de coníferas que viveram no Nordeste antes dos dinossauros, pensa numa coisa legal! + c.org/Cjh72PnGsH

Um tronco petrificado da Era Paleozoica (Período Permiano) em Altos, PI. Quando o primeiro dinossauro caminhou na Terra, este tronco já era um fóssil. #FossilFriday #FlorestaFossilAltos

O Mestrado em Biodiversidade Neotropical da UNILA está com as inscrições abertas e estou ofertando uma vaga. Caso tenham interesse em trabalhar com sistemática e/ou biogeografia de aranhas, me escrevam! portal.unila.edu.br/noticias/mes...

The holotype of Maurymontia mborore, a new genus and species of Triaenonychidae recently described by my friends and colleagues Williams Porto and Abel Pérez-González. From Misiones, Argentina. We found a single male in a rocky area within the subtropical woodlands by sifting litter.

Felicitamos a docentes y estudiantes del curso Genómica de la Biodiversidad @ibiogen-latam.bsky.social! 🧬🤓 En especial a nuestros socios Ivan de Magalhaes @6eyes8legs.bsky.social y Pía Pacheco, ganadores de una beca de traslado de nuestra Sociedad.

Descoberta coordenada e feita por pesquisadores BRASILEIROS, tudo BR, sangue verde e amarelo, mídias 🤡:

Touring Western Australia

A dream come true: seeing a pelican spider (Archaeidae) in the field Austrarchaea griswoldi, found in Eungella National Park, Queensland

Bugs to make you go “Ooooh!” 😲🤩

Beautiful work by Ortiz et al. on the phylogenomics of zodariid spiders. Nice way of summarizing topological conflict among datasets and analyses! resjournals.onlinelibrary.wiley.com/doi/10.1111/...

Monjaraz-Ruedas et al. on genetic diversity of several mygalomorph species. Body size and ecological niche do not predict genetic diversity or structure, because ALL species are highly structured and isolated by distance. Mygals don't like moving... onlinelibrary.wiley.com/doi/10.1111/...

🕷️

Nice paper by Lima et al. on the origins of the endemic birds of the Caatinga dry forests. They have been arriving since 12 million years ago, mostly from nearby dry/open areas (niche conservatism!). Interestingly, the most threatened birds are generally the older endemics... doi.org/10.1111/jbi....

Loxosceles galianoa, una nueva especie de araña del noroeste árido argentino. Bautizada en honor a María Elena Galiano, es pariente cercana de L. laeta, pero vive en ambientes naturales. En el artículo, también discutimos la evolución de la genitalia femenina en Loxosceles. doi.org/10.1071/IS24...

Papais em forma: aracnídeo macho que cuida da prole anuncia “boa saúde” para atrair fêmea Experimentos em campo com opiliões mostram que a emissão de anúncios sexuais é tão importante quanto a condição física para o sucesso reprodutivo da espécie jornal.usp.br/ciencias/ara...

Aspidolasius branicki, the cat-face spider

female spider genitalia seen in a scanning electron microscope

black & gold Oxyopes from Entre Ríos, Argentina

The process of drawing a spider male genitalia for taxonomic description. ~2:30 hours in total (only the filling; the lines in the camera lucida might have taken an additional hour or so).

Con gente del MACN, CEPAVE y Uruguay, recién describimos la araña Pikelinia schiapelliae (Filistatidae), hallada en arenales de Argentina y Uruguay. Muy simpática! (foto 1 por Damián Hagopián)

Actinopus cordobensis, a trapdoor spider from Argentina.

Moomin discovered that there is no toxicity over Bluesky.

This ancient millipede grew longer than a polar bear. It was discovered more than 100 years ago, but today, it finally gets a head. 🧪 My latest for @sciencenews.bsky.social: www.sciencenews.org/article/larg...

A campanha "Somos Todos #Saíra-apunhalada" chama a atenção sobre essa belíssima #ave que só é encontrada no Brasil, mais especificamente, no Espírito Santo. População atual da espécie é de apenas 20 indivíduos

vocês gostam de aranhas? querem ajudar num projeto de ciência comunitária? tentem identificar as 35 espécies que coletamos numa área de Mata Atlântica da Argentina, respondendo esse formulário: forms.gle/HsWXr9mmLpC2...

this was one of my favorite finds in Costa Rica: a mysterious glassy spider with a strange, delicate web. seems to be genus Synotaxus, but I can’t find much else about these little jewels or how they live

Fiz essa foto em 2015, atrás de um dos prédios do campus de pesquisa do Museu Paraense Emílio Goeldi

A beautiful sight for compound eyes (Eurypterids coming ashore under the recently-proposed rings of ancient Earth) #Sciart #paleoart #artbyjulio

estou tentando encontrar meus contatos da outra rede por aqui para seguir. quem anda por aqui? Pavocosa gallopavo (Lycosidae) usando seus bebês como chapéu para chamar atenção

Whether “science is political” depends on how you define “science” & “political” but elections absolutely affect prospects for the progress of scientific research/applications as well as the ability of scientists to work so even in the *narrowest* possible view, institutions of science have a stake

estou tentando encontrar meus contatos da outra rede por aqui para seguir. quem anda por aqui? Pavocosa gallopavo (Lycosidae) usando seus bebês como chapéu para chamar atenção

Boa noite! ✨

spider alignment chart. thanks to all the photographers.

7 months later I upload a few photos of my last fieldwork to my website: ilfmagalhaes.wixsite.com/home/fieldwork Titanattus andinus, a salticid that looks like a weird teenager, for attention

Cloud forest landscape, Bella Vista Cloud Forest Reserve, Ecuador This is a manual HDR stack that I took early in the morning. I like the way it came out, it is much better than the auto HDR I tried during the trip.

Early work found no REM in sleeping echidna, suggesting REM sleep arose in other mammals after diverging from monotremes. Later work discovered REM in the only other living monotreme genus. What do platypuses look like when dreaming, you ask? royalsocietypublishing.org/doi/10.1098/... #evolution

Sad to hear about the passing of Dr. Mike Gray from the Australian Museum. Mike was the first to do a phylogeny of Filistatidae, the family I studied for my PhD. Early during my studies I started corresponding with him and he was always very kind and thoughtful. Photo from his obituary, by H. Smith

Greetings, chordate comrades. #InverteFest is upon us. It's a periodic event where we invite you to celebrate the overlooked invertebrate fauna around you for an entire week. It's happening on whichever social platform you're on, so feel free to reupload this image to spread the word!

This cool spider is Galianoella leucostigma, the only member of Gallieniellidae in America—all other spiders in the family live in southern Africa and Madagascar. This species only eats ants, and its name honors María Elena Galiano, one of the first and most important arachnologists in Argentina.

Hola friends. I am in gearing up for my annual bug and other stuff finding trip. I’m a little anxious this year as I’ve been working on some fun photography techniques I hope I can bring to the field. Orb Weaver (Xylethrus superbus)

I'm here for the spiders

alien: I'll rule you all with an iron fist me: our leaders already do that alien: well then I'll strip your planet of its resources me: you're not gonna believe this

Today be like 🧪