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Sorry for my ignorance, but yesterday I found a creature new to me.

I found them under stones and among fallen leaves. They congregate and most of them do not move, but the ones that are awaken move spasmodically. They are bristly and seem to have a pair of eyes in the wide front side, while the rear side tapers into a point.

I am attaching a picture of two of them in the company of a pseudoscorpion, from which the actual size of the creature can be inferred.

Many many thanks in advance!

Miquel

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They are millipedes - probably Polyxenidae, certainly in that suborder. They are not the British Polyxenus lagurus. Where were they found?

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I forgot to mention it. They were found in Palam?s, Girona, coastal NE Spain.

Many thanks for the identification!

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I cannot imagine these are Polyxenus period. I could not find any pictures of the containing group (Penicillata) that were not Polyxenus easily.

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Fauna Iberica lists the following species within Order Polyxenida

Ord. Polyxenida

Fam. Synxenidae
Phryssonotus platycephalus (Lucas, 1846)

Fam. Polyxenidae
Macroxenus enghoffi Nguyen Duy-Jacquemin, 1996
Polyxenus fasciculatus Say, 1821
Polyxenus lagurus (Linnaeus, 1758)
Polyxenus oromii Nguyen Duy-Jacquemin, 1996

Fam. Lophoproctidae
Lophoproctinus inferus (Silvestri, 1903)
Lophoproctus jeanneli (Br?lemann, 1910)
Lophoproctus pagesi Cond?, 1982

I have not been able to find any pictures of family Synxenidae nor Lophoproctidae in the web. :( With pictures available I think that at least the family could be determined :). Polyxenus seems rather different from this one, particularly the "tail".

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Fam. Synxenidae ; Phryssonotus platycephalus (Lucas, 1846)
because the body is covered with scales instead of only bristles.