Flat-backed millipede

7042.        This crawler is skinny and about an inch long, and comes out in late July. They are near the pool and in the basement for about a month then disappear. Thanks for any light you can shed. Fenwick, Ontario. Canada

Number 7042. This is a flat-backed millipede, possibly a garden millipede, Oxidus gracilis (Polydesmida: Paradoxosomatidae). These primarily are scavengers on decomposing organic matter, but may become nuisance pests when they occur in large numbers. Click here for more detailed information..