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Marshal Hedin

@mhedin.bsky.social
1.7K followers 741 following 567 posts

devoted to the study & understanding of biodiversity, and public sharing of biodiversity knowledge and beauty. a "curator" of biological collections, and of the planet. Dad, Univ Prof

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Reposted by Marshal Hedin
Rob Waterhouse @rmwaterhouse.bsky.social · 30/09/2026
The ubiquity of insect-vertebrate interactions makes clear that widespread #insect #declines are likely to seriously affect many vertebrate populations www.nature.com/articles/s44... #biodiversity #ecology #InsectDecline
nature.com
The importance of insect biodiversity for vertebrates - Nature Reviews Biodiversity
Changes in insect diversity and abundance can affect vertebrates but understanding these consequences relies on having rich information about vertebrate–insect interactions. This Review summarizes the...
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Science Magazine @science.org · 29/09/2026
On 28 September, a jet-powered drone slammed into the headquarters of the National Academy of Sciences of Ukraine in Kyiv, killing at least two people and destroying a section of the historic building. scim.ag/3TsMg5M
scim.ag
Russian drone kills at least two in Ukraine science academy attack
New underground labs are being built as war rages on
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Natural History Collections and Museomics @nhcm.pensoft.net · 28/09/2026
🕷️ A remarkable collection of approximately 15,000 spider and scorpion specimens has been made freely available to researchers worldwide, demonstrating how regional museums and open-access initiatives can democratise biodiversity knowledge across Brazil: doi.org/10.3897/nhcm.3.197964
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Michael Caterino @mcaterino.bsky.social · 28/09/2026
Fall reading weather is here! A good time to find a quiet place to think about what matters. 'Under One Canopy', 35% off at libraries.clemson.edu/press/books/... with discount code 23CANOPY35.
A book resting on a red hammock against a wooded backdrop of young beech, hickory, and oak. The book is titled "Under One Canopy: Environmental Ethics and the Tree of Life".
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Tom Astle @tjalamont.bsky.social · 26/09/2026
A few phone pics of various chunks of public land for National Public Lands Day. Keep Public Lands public. #publiclands #thislandisyourland
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Michael Caterino @mcaterino.bsky.social · 23/09/2026
The Clemson University Arthropod Collection is 100 years old and still going strong! Grateful to the university for helping us celebrate this milestone. news.clemson.edu/a-century-of...
news.clemson.edu
A century of insects
The Clemson University Arthropod Collection turns 100 this year, and the data it contains is more valuable to the University's land-grant mission than ever. The Clemson University Arthropod Collection...
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Joachim Mergeay @jmergeay.bsky.social · 18/09/2026
Silent but dramatic loss of genetic diversity unveiled using museum specimens #consgen
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Marshal Hedin @mhedin.bsky.social · 12/09/2026
such a pretty covering of fine pinkish hairs on this immature Titiotus spider, from a cave in Sequoia NP, California
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Laura Ross @laurarossevo.bsky.social · 10/09/2026
My lab @ Edinburgh university is recruiting a postdoc to work on the weird and wonderful germline-specific chromosomes of flies. elxw.fa.em3.oraclecloud.com/hcmUI/Candid... collaboration with @germline.bsky.social and yukiko yamashita funded by @novonordisk.bsky.social please repost!
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Rodrigo Monjaraz Ruedas @monroderik.bsky.social · 09/09/2026
New Postdoc opportunity to join my lab @nhm.org working with Phylogenomics of Soft Spiders (Fam. Cybaeidae) in collaboration with @mhedin.bsky.social, help me spread the word! workforcenow.adp.com/mascsr/defau...
workforcenow.adp.com
Recruitment
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Earth Archives @eartharchives.org · 09/09/2026
DNA from a 190-year-old museum specimen has confirmed a distinct Himalayan pangolin species and could help trace illegally traded scales back to their source. Image credit: Tulshi Laxmi Suwal. www.sciencedaily.com/releases/202... #fossils #paleontology
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Marshal Hedin @mhedin.bsky.social · 08/09/2026
Looking south, Tehachapi Pk in far distance to left, Grapevine in far right distance SETN
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California Landscapes @calandscapebot.bsky.social · 08/09/2026
Breckenridge Peak 2, Kern County, CA 🗺35.4529, -118.5914 🧭186° ⛰7520 ft ops.alertcalifornia.org/cam-console…
An image from AlertWildfire: Breckenridge Peak 2, Kern County, CA
🗺35.4529, -118.5914 🧭186° ⛰7520 ft
https://ops.alertcalifornia.org/cam-console/1854
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Tom Astle @tjalamont.bsky.social · 08/09/2026
Pika, Beartooth Plateau at close to 11,000 feet, Wyoming. These small fluffballs are not rodents, but related to rabbits. They don't hibernate, despite the brutal winters at high elevation. They gather plants in the brief alpine summer then live on the dried "hay" all winter. Also, they are cute. 🌿📷
A photo of a cute hamster-esque looking animal (but actually related to rabbits, not rodents) called a pika, sitting atop lichen covered boulders.
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Marshal Hedin @mhedin.bsky.social · 08/09/2026
with my wonderful colleague @monroderik.bsky.social, just published "What a Long Strange Trip It's Been: Miocene Salinian Block Migration and the Biogeography of Megahexura Spiders" in J BioG dx.doi.org/10.1111/jbi.... novel CA biogeographic story! not OA ... please contact me if you need a copy
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Nicky Bay @nickybay.bsky.social · 07/09/2026
Sunny-side-up! Cyrtophora cylindroides
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Marshal Hedin @mhedin.bsky.social · 06/09/2026
Epic skies in the desert tonight Anza Borrego Desert State Park
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8legs2fangs.bsky.social @8legs2fangs.bsky.social · 04/09/2026
Really cool paper from one of my students is now out. More mygalomorph research! biogeography.pensoft.net/article/1827...
biogeography.pensoft.net
Hypothesis-driven biogeography to estimate rates and dates when fossil evidence is scarce: a case study using an ancient, Holarctic genus of spider (Araneae, Antrodiaetidae, Antrodiaetus)
Understanding when lineages diverged is a common inquiry within the field of biogeography and often requires a rate of evolution and a means to calibrate the phylogeny to absolute time. While fossil e...
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Elle Cordova @ellecordova.bsky.social · 03/09/2026
Rough Draft vs Final Draft
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Max Telford @maxjtelford.bsky.social · 02/09/2026
Important paper by @kaplipa.bsky.social and colleagues. Advocating for the importance of Natural History museum collections in genomics. www.nature.com/articles/s41...
nature.com
Species-dense genomics through natural history collections - Nature Reviews Genetics
Large-scale genome initiatives are transforming biodiversity genomics, but genomes remain taxonomically sparse and difficult to compare across species. Kapli and colleagues argue that natural history ...
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Senator Nikil Saval @pasenatorsaval.com · 01/09/2026
It is unacceptable for a world-class city like ours to allow its major natural history museum to close. We cannot allow it. My statement ⬇️
The text of Senator Saval's statement on the closure of the Academy of Natural Sciences museum. The words are in white on a blue background. Senator Saval's image is in the lower-right corner.

"For nearly two centuries, the museum of the The Academy of Natural Sciences has been the physical embodiment of a commitment to public natural history education. I was outraged to learn of the plans for its closure, both as a long-standing member of the museum and as an elected representative committed to the health and vitality of Philadelphia. It is unacceptable for a world-class city like ours to allow its major natural history museum to close.  

The mismanagement of such a treasured asset is a profound insult to the residents of the city and to the incomparable workers and curators at the museum. We cannot allow it."  The text of Senator Saval's statement on the closure of the Academy of Natural Sciences museum. The words are in white on a blue background. 

"This museum is a place where generation after generation first became enthralled with our world, and as we face the enormity of the climate crisis and an unprecedented loss of biodiversity, the continuation of the museum’s legacy of marvel and care for the natural world has never been more urgent. Partners from all levels of government must unite in our efforts to see this vital work continue."
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Marshal Hedin @mhedin.bsky.social · 31/08/2026
a "rocky canyon spider", genus Titiotus. great example of a radiation of many species, all endemic to California, many with very small geographic distributions we typically have to work hard to find these, but on this warm evening, saw dozens out foraging on streamside boulders see the heart ?
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Priyantha Wijesinghe @elaphrornis.bsky.social · 29/08/2026
Curator of Insects and Arachnids at Royal Ontario Museum. CLOSE DATE: September 25, 2026.
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Marshal Hedin @mhedin.bsky.social · 28/08/2026
A bit of monsoonal moisture sweeping in from the east, making for nice San Diego skies
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Al Jazeera English @aljazeera.com · 27/08/2026
The Tohono O'odham people have sued the US government to stop construction of a border wall through their reservation.
aljazeera.com
Tribe accuses US federal agents of ‘trespassing' on indigenous border land
The Tohono O'odham people have sued the US government to stop construction of a border wall through their reservation.
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Stephen Heard @stephenbheard.bsky.social · 25/08/2026
That new species of monkey last month was a great news story, but is species discovery really like that? And why museums are so important: scientistseessquirre... 🌍🧪
scientistseessquirrel.wordpress.com
New species from the rainforest vs. new species from museum drawers
Last month, the announcement of a new-to-science monkey species from the Congolese rain forest made a bit of a splash. It’s Colobus congoensis, formally, and less formally and based on a local name…
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Henry Gee 亨利·纪 @endofthepier.bsky.social · 26/08/2026
Amphibious stem-insect from the Mississippian of Texas sheds light on colonization of land. Paper in @nature.com www.nature.com/articles/s41...
nature.com
Amphibious stem-insect sheds light on colonization of land - Nature
Restudy of a challenging fossil using cross-polarized light imaging and phylogenetic reconstruction identifies Chosha praecursor, a probable early-diverging insect, helping to bridge the longstanding ...
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Marshal Hedin @mhedin.bsky.social · 26/08/2026
this image tells a fun & interesting story I found this Colonus jumper at night dangling from her dragline, with an imm harvester (Leuronychus) prey 1) perhaps indicates that she was actively hunting at night, 2) maybe from her dragline, parallel to vertical cliffs? conjectural at this stage
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Marc A. Milne @forthespiders.bsky.social · 25/08/2026
A female and male guardstone spider, Phrurolithus kastoni, from California. Last published record of an observation or collection: 1938 (88 years ago!). The male has also never been described, so this boy here is new to science! Specimens found at the San Diego Natural History Museum. #lostspecies
A male spider (Phrurolithus kastoni) from Riverside Co., CA. The spider has a dusky yellow carapace with a dark yellow abdomen bisected by a light yellow band. Yellow legs. A female spider (Phrurolithus kastoni) from California. The spider has a dark yellow carapace with a dark gray abdomen bisected by a light gray band. Dark yellow legs.
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Dr. Jonas Wolff @wolffspider.bsky.social · 24/08/2026
One of the remaining larger construction sites in resolving the phylogenetic systematics of spiders has been cleaned up! You find out refined classification system of the marronoid clade of spiders here: doi.org/10.1111/cla.... (Open Access) 1/5
A phylogenetic tree showing the relationships of the spider families Amaurobiidae, Agelenidae, Macrobunidae, Hahniidae, Cybaeidae, Cicurinidae, Toxopidae, Dictynidae, Argyronetidae, Lathyidae, Cycloctenidae, Aorangiidae, Neolanidae, Stiphidiidae, Desidae, Amphinectidae, Matachiidae and Porteriidae.
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Anza-Borrego Desert Research Center @anzaborrego.bsky.social · 23/08/2026
A monsoonal humid sunset with pink clouds above Sunset Mountain earlier last week (Photo: Sicco Rood).
A monsoonal humid sunset with pink clouds above Sunset Mountain.
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Ologies with Alie Ward @ologies.bsky.social · 23/08/2026
If you haven't listened to the SKUNKS ep and followed Dr. @jwdragoo.bsky.social, may I ask WHYYY? www.alieward.com/ologies/meph...
alieward.com
Mephitology (SKUNKS) with Dr. Jerry Dragoo — alie ward
It’s here. SKUNKS. My dream guest, Dr. Jerry Dragoo of the Institute for the Betterment of Skunks and Skunk Reputations is finally on Ologies, and I can barely contain myself. Come to Albuquerque to m...
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Marshal Hedin @mhedin.bsky.social · 23/08/2026
look real close! amazing cuticular sculpturing on these slow Stenamma ants from Sequoia NP I enjoyed their unhurried & intentional pace of life
dark orange ants with ornate sculpturing of cuticle
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Marshal Hedin @mhedin.bsky.social · 22/08/2026
perhaps a flat-backed pede?, from Sequoia NP love the spiked body rings, and fancy lateral lobes
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Marshal Hedin @mhedin.bsky.social · 21/08/2026
a Kukulcania spider at her burrow entrance, at night along a roadside bank in Sequoia NP she was quite shy, but I finally captured some images forgot to get a close-up of her amazing puffy cribellate silk :(
black spider at burrow entrance, with puffy white silk surrounding burrow entrance
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Frederik Seelig @frederikseelig.bsky.social · 20/08/2026
🪰🐝🦟‘If only people knew’: the fascinating lives of flies. Great article @flygirlnhm.bsky.social ! www.theguardian.com/environment/...
theguardian.com
‘If only people knew’: the fascinating lives of flies
Most people associate the insects with filth, but they are vital to the food cycle and sometimes even pretty
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Marshal Hedin @mhedin.bsky.social · 17/08/2026
the daintiest of the dainty, a blind cave spider in the rarely encountered family Telemidae Sequoia Nat Park, CA
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Marshal Hedin @mhedin.bsky.social · 17/08/2026
Epic For sale in Three Rivers CA
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Marshal Hedin @mhedin.bsky.social · 17/08/2026
This won’t be for everyone An amazing aggregation of harvestman Sequoia national Park, CA
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Distributed System of Scientific Collections @dissco.bsky.social · 11/08/2026
Good to see the #IUCN reiterate what has been our mantra all along: #NaturalHistory Collections are not repositories of the past but research-active infrastructures ready to address current and future global challenges: www.dissco.eu/iucn-natural... #biodiversity #taxonomy @eurotaxonomy.cetaf.org
dissco.eu
ICUN Position Statement on the vital role of biological collections in biodiversity conservation - DiSSCo
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Marshal Hedin @mhedin.bsky.social · 09/08/2026
a wonderfully cute Pika in early morning reflected light, CA Sierra Nevada this one became accustomed to me, let me get quite close look at those whiskers!
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Marshal Hedin @mhedin.bsky.social · 06/08/2026
Recent backpacking in the John Muir Wilderness, near Mono Pass
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The Lincoln Project @lincolnproject.us · 31/07/2026
Donald Trump wants to use your tax dollars to pay off January 6th rioters who beat cops with flag poles, and the GOP at large has nothing to say about it. They don't care, it's that simple.
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Jocelyn Anderson Photography @jocelynanderson.bsky.social · 31/07/2026
A juvenile Red-tailed Hawk enjoying a meal close to the path. The parents are still bringing in food while the young ones learn to hunt.
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Keith Bayless @thekeithing.bsky.social · 28/07/2026
Sustained investment in specimen-based taxonomic research is key to moving towards effective conservation. iucn.org/news/202607/...
iucn.org
From collections to conservation: the indispensable role of natural history museums
The IUCN Species Survival Commission has published a Position Statement on the vital role of biological collections in biodiversity conservation: a formal acknowledgement that natural history museums,...
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Darren Irwin (he / him) @darrenirwin.bsky.social · 25/07/2026
Magic traits, search costs, and the persistence of species in secondary contact Jack R. Farley, Darren Irwin bioRxiv 2026.07.23.740407 www.biorxiv.org/content/10.6...
biorxiv.org
Magic traits, search costs, and the persistence of species in secondary contact
When two populations come into secondary contact, assortative mating can act as a barrier to gene flow. However, when assortative mating is incomplete, associations between preference and cue loci can...
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Marshal Hedin @mhedin.bsky.social · 27/07/2026
Say's Phoebe landing in pleasant evening light
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Felix Zareie-Vaux @felixvaux.bsky.social · 27/07/2026
Phylogeny, classification, and evolutionary history of Neogastropoda: doi.org/10.1093/zool... #evolution #phylogenetics #systematics #mollusca
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Dr Mark D. Scherz @markscherz.bsky.social · 26/07/2026
Say hello to Quentin’s Diamond Frog, Rhombophryne quentini. 🧪🐸 #NewSpecies
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Marshal Hedin @mhedin.bsky.social · 26/07/2026
hammertail robberfly on Mojave Yucca, single shot I've found that robbers like Yuccas, and have simultaneously discovered that getting stabbed by these hurts, for a long while have recently taken to sliding my clarity to the left in my LR macro post-processing ... kinda liking the look
a hairy fly perches on the edge of a Yucca cactus
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