Chamaesomatidae

Chamaesomatidae is a family of millipedes belonging to the order Chordeumatida. This family contains 28 species distributed among 11 genera. These millipedes are found in Europe and North Africa.

== Description == These millipedes range from 3.3 mm to 12 mm in length. Many species dwell in caves. The paranota are small and humplike. Adult millipedes in this family have 26, 28, or 30 segments (counting the collum as the first segment and the telson as the last). This family includes the species Chamaesoma broelemanni and Xystrosoma santllorence, notable as two of only a few chordeumatidan species with only 26 segments in adults, four fewer segments than typically found in adults in this order. Most genera in this family lack pigment.