Derek Hennen, Ph.D.
@derekhennen.bsky.social
3.6K followers 470 following 1K posts
Entomologist & Myriapodologist: leaf litter critter enthusiast. Author of Ohio Millipede Field Guide. "Scientist & avowed Swiftie" -Rolling Stone Richmond, VA www.derekhennen.com
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Reposted by Derek Hennen, Ph.D.
keithwdickinson.bsky.social
Today is a day when arts degrees are worthless, but the product of those degrees is so valuable it would kill an entire industry if they were made to pay for it.
derekhennen.bsky.social
An excellent Narceus! A male, you can see the enlarged 7th ring.
derekhennen.bsky.social
Of course!! Winkler, Berlese, potato-potato :)
derekhennen.bsky.social
Happy to add you if you want! I'll post my set up soon.
derekhennen.bsky.social
There's no better place to see pretty millipedes than the Appalachians! They come in all colors of the rainbow here.
derekhennen.bsky.social
I started a list for scientists and others interested in leaf litter fauna, please share and let me know if you want to be added! Do you love a good hand lens, soil sieves, and Berlese funnels? Perhaps this is the place for you.
Reposted by Derek Hennen, Ph.D.
santiagokique.bsky.social
Like...this is the biggest corruption scandal the NIH has experienced in its entire history and its not even close. Half of a BILLION dollars to a single project as a result of political spoils. That's the equivalent of several hundred R01s.
Reposted by Derek Hennen, Ph.D.
Reposted by Derek Hennen, Ph.D.
eriklinstrum.bsky.social
Must-read by Joseph Fishkin: the Trump higher ed "compact" demands "a near-complete surrender of core academic freedoms" and lets DOJ pull "federal benefits to which the university and its faculty and students are entitled under federal law." A deal for suckers balkin.blogspot.com/2025/10/the-...
Balkinization: The Art of Replacing the Law with the Deal
A group blog on constitutional law, theory, and politics
balkin.blogspot.com
derekhennen.bsky.social
I could watch Columbo make rich people uncomfortable for hours, Peter Falk is great.
derekhennen.bsky.social
Herbert loves his dang onions I'll say
ascalaphid.com
Brother Herbert's Big Onion
to the tune of Diarrhea Planet's Ghost With A Boner: 
SHREW WITH AN ONION! 
SHREW WITH AN O-O-O-O-NION!
derekhennen.bsky.social
Yep on both counts. Subspecies names based on color or phantom morphology of slightly different angles. I've yet to find strong cases for subspecies in myriapods and arthropods in general.
Reposted by Derek Hennen, Ph.D.
jamellebouie.net
the usual story. rich guy wants to punish universities for not clamping down on pro-palestinian protests and for doing too much to recruit minorities. at base these guys want the top tier of american universities to become, once more, safe-spaces for their dunderheaded failsons
The Billionaire Behind Trump’s Deal for Universities
www.nytimes.com
Reposted by Derek Hennen, Ph.D.
chikichanka.bsky.social
Perverse market incentives related to the desirability of rare items are pushing the European eel to extinction, by favoring its exploitation despite extreme scarcity
@consletters.bsky.social @ebdonana.bsky.social @azti.bsky.social
See thread below
conbio.onlinelibrary.wiley.com/doi/full/10....
Reposted by Derek Hennen, Ph.D.
dmgreene.bsky.social
Dwayne has his job back because we organized for it. We fight or we die. Join AAUP today www.aaup.org/join
derekhennen.bsky.social
I never have to answer the question "how do you identify this subspecies?" again. I could weep with joy! When I first learned millipedes in Ohio, I was always vexed trying to figure out which ones occurred in the state. Lol of course they were the same! Good stuff.
derekhennen.bsky.social
Our study used hundreds of specimens collected over a 20 year period to ensure that we had genetic data from throughout the generic distribution, so it was 100% a case of delayed gratification! And that doesn't count all the specimens (1000+) we collected but didn't use for DNA work!
derekhennen.bsky.social
Much legwork previous to this study was done by two of the US's preeminent millipede biologists, Richard Hoffman and Rowland Shelley. Taxonomic work like this always builds on the foundations set years beforehand, and it's gratifying to continue that legacy and solidify our knowledge of these pedes.
derekhennen.bsky.social
Out of 20 (!!) species names, our genetic and morphological evidence shows there to be 6 valid species in the genus, with Apheloria corrugata being the most widespread. It occurs from Oklahoma to Ontario, and is the gateway millipede for many fans. Isn't it pretty?
The cherry millipede Apheloria corrugata crawling on travertine rock in southwest Virginia. The millipede is black with yellow stripes and red dots along its side, with black antennae and yellow legs.
derekhennen.bsky.social
And these millipedes have some seriously gorgeous color morphs. Check the paper to see the full suite, here's just one species, Apheloria virginiensis. But of course, there is a lot of mimicry, so color pattern generally can't be trusted.
Apheloria virginiensis (Drury, 1770), color morphs. A: Three-spotted, with yellow paranotal, metatergal and
collum spots, and yellow legs; B: Two-spotted, with yellow paranotal spots, and yellow legs; C: Three-spotted, with pink
paranotal, metatergal and collum spots, and pink legs; D: Three-spotted, with pink paranotal spots, yellow metatergal and collum
spots, and yellow legs.
derekhennen.bsky.social
Millipede fans rejoice: we published our revision of Apheloria! This is the most common cherry millipede genus, but its taxonomy has been riddled with nebulous subspecies names. No longer! We clarify species limits and provide a distribution map. mapress.com/zt/article/v... @apheloria.bsky.social
Revision of the millipede genus Apheloria Chamberlin, 1921 (Polydesmida, Xystodesmidae, Apheloriini) | Zootaxa
mapress.com