Early #WormWednesday is this rare pokemon, Phagocata bursaperforata from Georgia, USA www.inaturalist.org/observations...

Deep sea polyclads spotted again by @schmidtocean.bsky.social in the Argentine Basin. Specimen have two clearly visible nuchal tentacles, falling under Stylochoidea then. Available at www.youtube.com/watch?v=NqnW...

To all current/future planarian enthusiasts: The next installment of the North American Planarian Meeting will occur in June 2026 in Ithaca, New York. We welcome anyone who wants to participate, organized by me and Chris Petersen (Northwestern). Please share far and wide. napm2026.weebly.com

Alright, we decided for broader view of worm world in our little Discord server. Various folks working on various different kinds of worms so it was natural change. Planarians included. 🌿 #invertebrate #taxonomy #discord disboard.org/server/14331...

Early #WormWednesday, because I want. This looks like one of rare Tasmania dugesiids, most likely Spathula genus. We don't see nice photos of these often. www.inaturalist.org/observations...

Leech lovers have place to stay on Discord now. If you like everything what sucks stops in. It's small but nice place with taxonomic focus. My leech shenanigans are posted here as well. discord.gg/q75c89AuBD

Strigeid metacercaria shenanigans continuing. Cysts were isolated from Erpobdella octoculata leeches. Polarized for visualization of double-layered cyst wall. One cercaria got out of the cyst, received mugshot as well. Barcoding primers are on the way. #parasitology #FlatwormFriday #invertebrate

Now published and open-access: 🧪 doi.org/10.1051/para...

I'm not dead. Just very busy. Not much of time for internet at those days. Some adult Dugesia gonocephala from recent Slovakia batch. #FlatwormFriday

Huge polyclad pancake sampled today at Mar Del Plata Canyon, Argentina by @schmidtocean.bsky.social. I didn't spotted any significant head features like any type of tentacles which are present in various polyclad group. Available at www.youtube.com/watch?v=ttYm...

Another bunch of deep sea polyclads from @schmidtocean.bsky.social Argentina dive 819. Longer ones are somebody from Boninioidea? Really not sure. Anyway, that canyon sediments and rocks are covered by them. Available at www.youtube.com/watch?v=kAxq... and www.youtube.com/watch?v=FJNJ...

Six of those Stylochoidea-like polyclads sampled today by @schmidtocean.bsky.social at Mar Del Plata Canyon, Argentina, cca 2500 m. Fine large #polyclads, enough to fill few double wide slides. Good luck with future description of those. Available at www.youtube.com/watch?v=xg9N... #WormWednesday

Pleasure to identify with this quality of photos. Last DIC picture in this observation is beautiful. #WormWednesday 🌿 #invertebrate www.inaturalist.org/observations...

This is so FREAKIN’ COOL! This calanoid copepod has a friend visiting…INSIDE ITS BODY!! There’s a trematode worm, a parasite, taking up pretty much every micron of this poor dude. You can see the worm’s suckers that is used to attach to its host. AWESOME!! 🦑 #plankton

Just lovely shot of Dendrocoelopsis americana #planarian #WormWednesday 🌿 #invertebrate www.inaturalist.org/observations...

Mothership of Dendrocoelum lacteum found today. We need some for our DNA barcoding shenanigans so I left my den for unexpected fieldwork today. Temperatures were rather hostile but worms are just fine. #WormWednesday 🌿 #invertebrate

Theromyzon tessulatum from weekend fieldwork session. This one had one epistylid epibiont, other glossiphonids had none. Weird, this locality is usually quite reliable on epistylid abundance. #WormWednesday 🌿 #invertebrate

Published in #Check_List, 21(3) "First confirmed records with molecular data of the terrestrial flatworm Bipalium kewense Moseley, 1878 (Tricladida, Geoplanidae) in Madagascar, Egypt..." by Gastineau,R., @jean-lou-justine.bsky.social @isyeb.mnhn.fr et al. #Platyhelminthes 🪱 doi.org/10.15560/21....

Alboglossiphonia sp. from latest fieldwork session adding another finding of epistylid epibionts into collection. Case from 2023 is available on bioosm.brmlab.cz/histolka/pro.... Perhaps it's just about looking around. #WormWednesday 🌿 #invertebrate

Pair of Dalyellia penicilla whole mounts. One is stained with acetic carmine. #WormWednesday #microscopy

Monday is feeding and washing day. Girardia sp. planarians playing tug of war with frozen chironomid during feeding.

Grab this if you didn't screamed internally this week yet

Me: OK, we need check this on other planarian, let's see Girardia tigrina Brain: OK Brain: Isn't it nematode in the pharyngeal tissue? Me: It is,but later Brain: I wanna nematode! Let's check all slides! Me: No, it's 16 slides, back to original task! Brain: I wanna nematode! Me: OK, but I hate you.

Exceptionally large Dugesia gonocephala from latest fieldwork session near Prague #WormWednesday 🌿 #invertebrate

Season of tiny blobs is apparently on. Microdalyellia armigera from latest fieldwork session for #WormWednesday. 250x stitch. 🌿 #invertebrate

I have special worms this time. This week, after 5 years of looking for planarians I found Dendrocoelum which is not D. lacteum. It's most likely D. coecum, endemic planarian which was known in Central Bohemian valleys. They need further work, 3 blind species possible. Stay tuned ;] #InverteFest

#FlatwormFriday. Taenia pisiformis scolex. 4 suckers, calcareous corpuscles in parenchyma are visible under tegument. Nice muscle fibers in parenchymal tissue. Just tiny slice, in mm scale. 500x, H&E, several frames. Not my production, operator was somebody from T. Gerrard & Co, UK #parasitology

Regeneration leads to global tissue rejuvenation in aging sexual planarians | Nature Aging www.nature.com/articles/s43...

#NewSpecies! New marine flatworm from #japan just crept in: Prostheceraeus fragum Treatment: treatment.plazi.org/id/F8378799-... Publication: doi.org/10.1080/0022... #JournalOfNaturalHistory #ProstheceraeusFragum #FAIRdata #openaccess #ecology #biodiversity #nature #conservation #worms #flatworm

I headed out with a torch for half an hour this evening and found this flatworm. I think it's one of the non-native ones, although the species has been in the UK since the mid 1800s. Parakontikia ventrolineata #ukwildlife #flatworm #worms

Perfect photos of some maricolid, most likely Procerodes genus www.inaturalist.org/observations...

Looking for: Sebia MG300 manual. We have one troublemaker who returning weird voltage outputs. No manual found on internetz. 🧪

Classy bipaliid for classy #WormWednesday. One of those cases 'I know worm by sight, cannot find fitting species tho'. Probably one of those undescribed folks who waiting for proper label or one of those who is hidden too deep in available archives. www.inaturalist.org/observations...

Little untold marine story. Those are most likely Rhabdocoela cocoons. No idea if those were left by single animal. Or it is coincidence or sign of gregarious behavior in microturbellarians which producing single capsule [such as Dalyelliidae family]. Questions! 200x. Intertidal zone of Catalonia

Early #WormWednesday - it's a marine leech most likely from Piscicolidae family. Beautiful large specimen. Happened today at chmidtocean.bsky.social, catch it here www.youtube.com/watch?v=v8vE...

We looked into details of the stem cell system of catenulids. Surprisingly, it was very different from the canonical neoblast-based systems of other flatworms. What does it tell about the evolution of stem cells and regeneration? Check in our latest paper in @naturecomms.bsky.social: bit.ly/3WK2ZzR

Pretty member of the Aphroditidae family from today's @schmidtocean.bsky.social dive. Grab it at www.youtube.com/watch?v=fz8l... #WormWednesday

Very nice fallstreak hole example, camera picture is from Tusimice located at North Bohemia, 14.01.2025 10:00 UTC MODIS imagery --> go.nasa.gov/42c0B8w #remotesensing

Do you have #Discord account? Did you know there is #microscopy server? Good mixture of microscopy and imaging folks with various backgrounds [1.3k members] is already in. Join us, everyone is welcomed. Repost is deeply appreciated ;] disboard.org/server/67276...

Those diagrams 😍 100% elegance. SEM work is stunning as well.

Polarized Helobdella stagnalis for #WormWednesday. It's older whole mount from 2022, they can be handy when we are on winter fieldwork break. 🌿 #invertebrate

Cavatic planarians and eyes, how it's going.

Lee cloudiness behind Pyrenees, quite nice case. 05.01.2025 13:30-14:00 UTC. Last picture is jet stream situation at 300hPa. Grab atlas here resources.eumetrain.org/satmanu/CMs/... #remotesensing

Worm for first 2025 #WormWednesday is this Chaetogaster sp. ;] 🌿 #invertebrate

Whoever is not on the list, sneak in ;]

Oh, hello there new eruption at Kīlauea's summit caldera: www.usgs.gov/volcanoes/ki...

Mesostoma sp. [most likely ehrenbergii] in summer viviparous phase, specimen coming from 2023 summer sampling at warm ponds of the Hrabanovska cernava mire [Central Bohemia, Czechia] #FlatwormFriday 🌿 #invertebrate #microscopy

Jaws of unknown member from Nereididae family for #WormWednesday. 120x enlarged, whole mount specimen from Catalonia 🌿 #invertebrate #microscopy

Rabbit hole of the week award goes to: Zoosporic Fungi Growing on Leeches (Hirudinea) #parasitology www.researchgate.net/publication/...

In this 2024 paper, we described the complete mitogenome of the native European land flatworm Microplana scharffi and demonstrated the phylogenetic proximity between the Microplaniinae and Bipaliinae. doi.org/10.11646/zoo...