HI, Guys
I will tell you I am 99% sure the first is a pill millipede, I have more than any one I know. The second is almost certianly a isopod or sow bug or what ever this is refered to as in your particular part of the world. The isopod is a crustation I've been told but looks alot like a pill millipede. Isopods have longer centipede like anntenna and move pretty fast, pillbugs have millipede anntenna and move slow. If you look they also exit the head in a different spot. The legs of the isopod are far fewer. Pillbugs are almost perfectly half circels from the front and isopods are really flat.
Steven is right about the rolling up difference.
I know a little more but those are the big differences I know. Oh, the isopods are somewhat dull and a pill millipede is most always shiny.
K now I am confuesed. I have cought pillbugs before. they had anteanea and some could roll up some couldn't I know they were both the same species because the bred and produced offspring so umm oh nevermind I give up!
Isopods are crustaceans, and as such should have two pairs of antenna vs. the one pair on any millipede (one of the pairs may be much smaller). Also, isopods have 7 pairs of legs, while pill millipedes will have more. What we in the US commonly refer to pillbugs (or roly polies, etc) are isopods, not millipedes. Not all isopods roll up, and in the US we sometimes call these "sowbugs", because the babies cling to the underside of the female, which apparently reminded someone of a mother pig nursing piglets.
We do have some pill millipedes in the US, but they're not common and very small, about 3/10 of an inch.
I think isopods are often referred to as "woodlice" in the UK.
In short, the first pic is a millipede, as it has way too many pairs of legs to be an isopod. The second pic is an isopod as it appears to have seven pairs of legs...unless it's hiding ome extra legs under there! :}
Hello there, why not take a few seconds to register on our forums and become part of the community? Just click here.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.