Is there anyone out there who can answer a couple of questions (one real-world, one speculative) for me about centipedes? I have googled the hell out of this but can find no clear answer.

Boosts for visibility appreciated.

#arthropods #myriapods #entomology #arachnids

(I know they're not insects or arachnids but I'm reaching here)

@karawynn Does @alexwild have any suggestions?
@KG_Jewell @karawynn I know very little about centipedes, and don't think I even know anyone who studies them.
@karawynn I had one crawl up my leg recently. In Hawaii, their ability to inflict pain is the source of many stories. Other than that I couldn't tell you much.
@brianvastag My spouse lived in Hawaii over 20 years ago; he remains impressed with (aka horrified by) the size and ubiquity of the centipedes there. Bigger even than the ones I grew up with in Texas!
@karawynn nice overview of centipede evolution in β€œUnderstanding Evo-Devo”, Wallace Arthur. https://doi.org/10.1017/9781108873130
Understanding Evo-Devo

Cambridge Core - Philosophy of Science - Understanding Evo-Devo

Cambridge Core
@gmbutler I would totally read that ... but alas, I lack institutional access. Thanks though!
@karawynn It might help to know the questions. I have a few people I might be able to ask.

@twizzt @nev

The first question is whether centipedes a) can and b) do ever 'rear up' like a snake, either in a threat display or prior to striking something above ground level. (Illustrations of centipedes often show this pose, but I haven't found textual or photographic indication that it's a real thing. I've seen photos of *millipedes* rearing up like that, but idk if that's relevant or if centipede physiology doesn't allow for it.)

@twizzt @nev

I have another potential question that would build on the answer to the first one, depending.

I also find myself wondering, in the species where the mother centipede constantly corrals the hatched young through their first one or two molts ... do the babies eat at all, in first and second instar stages? and if so, how and what?

@karawynn @nev On the fowl site, there is a user who posts videos of them eating. His username is something like @crevicedwelling and if you are willing to post there, he will tell you all you want to know
derhennen's Profile

I earned my PhD from the Entomology Department at Virginia Tech, where I worked on millipede systematics. My research focused on the flat-backed millipedes in the order Polydesmida, particularly the Appalachian Xystodesmidae (the cherry millipedes). My current research interests include the North American millipede fauna, particularly the family Parajulidae (order Julida). I'm happy to help identify your millipede spottings, and I would also love to receive any millipede specimens you're willing to collect. If you're interested in sending me millipedes you find, please let me know! You can send them alive or preserved in alcohol (95% ethanol if possible), though live millipedes are preferred. To find millipedes, look under leaf litter, logs, and rocks, or go out at night with a UV flashlight--you may see some that fluoresce! Want to learn more about collecting and identifying millipedes? Check out my Millipedes of Ohio field guide, available to download for FREE from the Ohio Division of Wildlife: https://ohiodnr.gov/static/documents/wildlife/backyard-wildlife/Millipedes+of+Ohio+Pub+5527.pdf. It features 50 different species, and is useful for identification to the order or family level for much of eastern North America. Be wary of using it for species-level identifications outside of Ohio, however, as many more species occur outside the state. If you would like to read my papers, you can find them on my Google Scholar page here: https://scholar.google.com/citations?user=wnMM9VQAAAAJ&hl=en.

iNaturalist
@twizzt oooh, excellent, thank you. I signed up for iNaturalist and then found out I can't message anyone until I make a certain number of site contributions (not easy!). But this guy is findable elsewhere.

@karawynn https://crevicedwelling.tumblr.com/ask

You can ask this person too without the fowl site...

Ask me anything

creatures in leaf litter, isopod alchemy. I make bugs. please look at them:

Tumblr
@twizzt @karawynn yes, Derek Hennen is millipedes but he must know some centipede people
@karawynn @nev I'm not really the best person to answer, but yes, they can rear up at least a little. If you touch their back ends, they will occasionally rise up and curl backwards. So they can at least lift themselves a little. I have seen them walk a short way along the edge of something then rise up and pivot to start climbing. I doubt they would strike anything too far above them. I've only seen it as a defensive posture or locomotory function. I study wasps though...
@twizzt @karawynn Anecdotally, I've seen the house centipede "rear up" but, like, horizontally, when on a flat surface at a right angle to the ground, to catch prey on a parallel surface. She kind of curls her front half around her prey. However, am not a centipedologist or whatever they're called.
@nev @karawynn they are so unexpectedly fast, its hard to process what you actually saw.

@karawynn @twizzt @nev They can rear up quite well. I learned that when I opened an aquarium lid to photograph a 12 inch long centipede and it just pulled itself up and climbed out.

I dont think I've ever seen it as a threat display, only for additional mobility.

@karawynn I'd check on top identifiers for centipedes at iNaturalist and start from there.