Jo Wolfe, PhD
@jopabinia.bsky.social
Why things evolve into crabs. Evolutionary biologist (species alive today AND fossils, and how to study them together). Canadian at UCSB and Harvard (she/her)
My science: https://scholar.google.com/citations?user=CKqoVjEAAAAJ&hl=en
My science: https://scholar.google.com/citations?user=CKqoVjEAAAAJ&hl=en
Pinned
Jo Wolfe, PhD
@jopabinia.bsky.social
· Aug 1
Our paper on convergent evolution of land crabs is out in its final final form. The journal didn't pick my image as the cover, so I'm sharing it here because it must be seen!
academic.oup.com/sysbio/artic...
🦀🦑🧪
academic.oup.com/sysbio/artic...
🦀🦑🧪
Reposted by Jo Wolfe, PhD
The sister group of all amphipods is the recently established order Ingolfiellida. Unlike amphipods, they lack epimera (side flappys along the body), and their pleopods/uropods (posterior swimming limbs) are fairly reduced. Weirdos #Crustmas 🧪🦑
December 10, 2023 at 4:01 PM
The sister group of all amphipods is the recently established order Ingolfiellida. Unlike amphipods, they lack epimera (side flappys along the body), and their pleopods/uropods (posterior swimming limbs) are fairly reduced. Weirdos #Crustmas 🧪🦑
Reposted by Jo Wolfe, PhD
December 10, 2025 at 2:03 AM
December 10, 2025 at 11:32 AM
December 10, 2025 at 2:03 AM
Reposted by Jo Wolfe, PhD
I found another alien in my yard tonight. This is some kind of planthopper nymph, but I have no idea what species.
Perhaps #bugsky can help!
At @casabentbill.bsky.social
#insects #nature #costarica
Perhaps #bugsky can help!
At @casabentbill.bsky.social
#insects #nature #costarica
December 10, 2025 at 1:21 AM
I found another alien in my yard tonight. This is some kind of planthopper nymph, but I have no idea what species.
Perhaps #bugsky can help!
At @casabentbill.bsky.social
#insects #nature #costarica
Perhaps #bugsky can help!
At @casabentbill.bsky.social
#insects #nature #costarica
Reposted by Jo Wolfe, PhD
S'up, nerds? It's still #Crustmas!
Yes, I know that's a dragonfly. And yes, dragonflies are insects.
But guess what? Cladistics doesn't care about your Linnean preconceptions. Insects are derived from crustacean ancestors, just like birds are feathery dinosaurs. So, crustaceans.
Yes, I know that's a dragonfly. And yes, dragonflies are insects.
But guess what? Cladistics doesn't care about your Linnean preconceptions. Insects are derived from crustacean ancestors, just like birds are feathery dinosaurs. So, crustaceans.
December 9, 2025 at 11:32 PM
S'up, nerds? It's still #Crustmas!
Yes, I know that's a dragonfly. And yes, dragonflies are insects.
But guess what? Cladistics doesn't care about your Linnean preconceptions. Insects are derived from crustacean ancestors, just like birds are feathery dinosaurs. So, crustaceans.
Yes, I know that's a dragonfly. And yes, dragonflies are insects.
But guess what? Cladistics doesn't care about your Linnean preconceptions. Insects are derived from crustacean ancestors, just like birds are feathery dinosaurs. So, crustaceans.
Reposted by Jo Wolfe, PhD
Seaweed pressing as an art and a science: our newly reestablished herbarium collection at Scripps and the history behind it #Phycology
An art and a science: Scripps Oceanography showcases 5,000 seaweed pressings
UC San Diego’s Smith Seaweed Ecology Lab is digitizing its collection of more than 5,000 pressings and making it accessible to the public
www.sandiegouniontribune.com
December 9, 2025 at 6:36 PM
Seaweed pressing as an art and a science: our newly reestablished herbarium collection at Scripps and the history behind it #Phycology
Reposted by Jo Wolfe, PhD
Fossil #Crustmas art - the oldest freshwater branchiopod, 410 million years ago
Drawing from early 2023, Lepidocaris rhyniensis, a crustacean from the Rhynie chert swimming through charophyte algae #crustacean #arthropod
December 9, 2025 at 12:42 PM
Fossil #Crustmas art - the oldest freshwater branchiopod, 410 million years ago
Reposted by Jo Wolfe, PhD
#Crustmas Day 9
This is one of the prettiest copepods I‘ve found. It‘s called Hersiliodes latericius and was found in coastal waters in Spain
#MarineLife #Copepods #Crustacean
This is one of the prettiest copepods I‘ve found. It‘s called Hersiliodes latericius and was found in coastal waters in Spain
#MarineLife #Copepods #Crustacean
December 9, 2025 at 4:53 PM
#Crustmas Day 9
This is one of the prettiest copepods I‘ve found. It‘s called Hersiliodes latericius and was found in coastal waters in Spain
#MarineLife #Copepods #Crustacean
This is one of the prettiest copepods I‘ve found. It‘s called Hersiliodes latericius and was found in coastal waters in Spain
#MarineLife #Copepods #Crustacean
Reposted by Jo Wolfe, PhD
MOAR elbow crab (Parthenopid) love! Lambrus nodosus! I'm guessing a reference to the "nodose" claws! MORE from my trip to Perth in February! #WesternAustralia #invertefest
December 9, 2025 at 4:54 PM
Reposted by Jo Wolfe, PhD
A lovely Western Australian parthenopid (aka elbow crab) from the collections in Perth! #invertefest Octolasmis warwicki!
December 9, 2025 at 4:55 PM
Reposted by Jo Wolfe, PhD
🎶On the 9th day of #Crustmas my true love gave to me - Grapsus tenuicrustatus🎶 (even though it doesn't rhyme) 🦑🦀
#nature #maui #christmas #crustacean #crab #love #black #smallwonders #cool #goodmorning #aloha #christmas #nokings #photography #eastcoastkin
#nature #maui #christmas #crustacean #crab #love #black #smallwonders #cool #goodmorning #aloha #christmas #nokings #photography #eastcoastkin
December 9, 2025 at 5:00 PM
🎶On the 9th day of #Crustmas my true love gave to me - Grapsus tenuicrustatus🎶 (even though it doesn't rhyme) 🦑🦀
#nature #maui #christmas #crustacean #crab #love #black #smallwonders #cool #goodmorning #aloha #christmas #nokings #photography #eastcoastkin
#nature #maui #christmas #crustacean #crab #love #black #smallwonders #cool #goodmorning #aloha #christmas #nokings #photography #eastcoastkin
Reposted by Jo Wolfe, PhD
A specimen of Rhinolambrus contrarius from the tropical Indo-Pacific. in Paris. #crustmas This one was quite sizeable at least a foot across or so.
December 9, 2025 at 5:08 PM
A specimen of Rhinolambrus contrarius from the tropical Indo-Pacific. in Paris. #crustmas This one was quite sizeable at least a foot across or so.
Reposted by Jo Wolfe, PhD
SEROLID isopod with Mah for scale! Antarctic trilobite analog! #trilobitetuesday #crustmas
December 9, 2025 at 5:14 PM
SEROLID isopod with Mah for scale! Antarctic trilobite analog! #trilobitetuesday #crustmas
Reposted by Jo Wolfe, PhD
#Crustmas #trilobitetuesday photographed from Polarstern so probably Antarctic or somesuch www.inaturalist.org/observations...
Ceratoserolis meridionalis
Ceratoserolis meridionalis on March 29, 2005 at 08:31 PM by Tomas Cedhagen
www.inaturalist.org
December 9, 2025 at 5:25 PM
#Crustmas #trilobitetuesday photographed from Polarstern so probably Antarctic or somesuch www.inaturalist.org/observations...
Reposted by Jo Wolfe, PhD
On a roll, so I'll keep going. The Antarctic isopod Ceratoserolis trilobitoides. Amazing animals, some quite large (~5cm or so!) found all around the Antarctic continental shelf. C. Held took this amazing photo for our team on a cruise (LMG 13-12).🦑🧪🌎🐧🇦🇶
December 9, 2025 at 5:24 PM
Reposted by Jo Wolfe, PhD
Reposted by Jo Wolfe, PhD
A stunning serolid isopod off Chile! #crustmas #trilobiteTuesday www.inaturalist.org/observations...
Family Serolidae
Serolidae from Oceà Pacífic Sud on February 27, 2022 at 07:25 PM by Mireia Querol
www.inaturalist.org
December 9, 2025 at 5:28 PM
A stunning serolid isopod off Chile! #crustmas #trilobiteTuesday www.inaturalist.org/observations...
Reposted by Jo Wolfe, PhD
off the Patagonian shelf, MORE serolid isopod love! #crustmas #trilobitetuesday www.inaturalist.org/observations...
Family Serolidae
Serolidae on April 2, 2014 at 10:45 AM by Jacobo Martín. Campaña Científica 'Banco Burdwood-Tierra del Fuego', 03-04/2014, B/O ARA Puerto Deseado (CONICET...
www.inaturalist.org
December 9, 2025 at 5:29 PM
off the Patagonian shelf, MORE serolid isopod love! #crustmas #trilobitetuesday www.inaturalist.org/observations...
Reposted by Jo Wolfe, PhD
SEROLID! from off the coast of Argentina! #crustmas #trilobiteTuesday www.inaturalist.org/observations...
Family Serolidae
Serolidae on March 30, 2014 at 04:39 PM by Jacobo Martín. Campaña Científica 'Banco Burdwood-Tierra del Fuego', 03-04/2014, B/O ARA Puerto Deseado (CONICET...
www.inaturalist.org
December 9, 2025 at 5:30 PM
SEROLID! from off the coast of Argentina! #crustmas #trilobiteTuesday www.inaturalist.org/observations...
Reposted by Jo Wolfe, PhD
Apparently there is such a thing as #trilobitetuesday (I approve), so for the 9th day of #Crustmas not one, but two Ceratoserolis trilobitoides (plus I miss days, so...)
#ceramics, #pottery, #sciart
#ceramics, #pottery, #sciart
December 9, 2025 at 5:31 PM
Apparently there is such a thing as #trilobitetuesday (I approve), so for the 9th day of #Crustmas not one, but two Ceratoserolis trilobitoides (plus I miss days, so...)
#ceramics, #pottery, #sciart
#ceramics, #pottery, #sciart