Synxenidae is a family of

bristly millipede ''Polyxenus lagurus'', known as the bristly millipede is a species of millipede Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class ...

s (Polyxenida). Three genera and around 10 species are known. Adult synxenids possess 15 or 17 pairs of legs, with the last two pair modified for small jumps. Adults in most species in this family have 17 pairs of legs, but in two species (''Condexenus biramipalpus'' and ''Phryssonotus brevicapensis''), they have only 15 pairs of legs.

References

Polyxenida Millipede families Taxa named by Filippo Silvestri {{Myriapoda-stub