Pseudopolydesmus canadensis
This record describes Pseudopolydesmus canadensis (species). Recorded family: Polydesmidae. Recorded order: Polydesmida.
Identification and Appearance

Most of paranota a deep, brick-red color, with the rest of the dorsum being a dark black. Slightly smaller than Ps. serratus . Gonopods Often sympatric with other congeners
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Diplopoda
- Order
- Polydesmida (Flat-backed Millipedes)
- Family
- Polydesmidae
- Genus
- Pseudopolydesmus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
e.NA, particularly in central to northern Appalachia and the northeast; usually at higher elevations
Additional species information
Species notes from the sources
Etymology: Pseudopolydesmus canadensis (Newport 1844)
About Flat-backed Millipedes: the wider group
Order-level background for Polydesmida, the group containing Pseudopolydesmus canadensis. Species-specific details appear above.
Group overview
Polydesmida (flat-backed millipedes) is the largest millipede order with ~3,500 described species. Many species produce hydrogen cyanide (HCN) as a chemical defense - a strategy unique among arthropods.
Ecological role of the group
Flat-backed millipedes are major leaf litter decomposers in forest ecosystems, recycling calcium, nitrogen, and other nutrients. Their fecal pellets contribute significantly to soil formation and humus production.
Economic and practical significance of the group
Millipedes are generally beneficial decomposers but can occasionally damage seedlings and soft fruits in gardens. Some tropical species cause skin irritation through their cyanide-based defensive secretions.
Recorded sources for this group: Myriapod research, soil ecology. Imported estimates may describe particular regions or reporting periods.
Photos of Pseudopolydesmus canadensis (5)
Photo credits: Contributed by Ken Schneider; Additional contributions by Lynette Elliott , v belov , DerekHennen , JBrown
Frequently Asked Questions About Pseudopolydesmus canadensis
What is Pseudopolydesmus canadensis?
Pseudopolydesmus canadensis is a species in the family Polydesmidae, within the order Polydesmida.
How do you identify Pseudopolydesmus canadensis?
Most of paranota a deep, brick-red color, with the rest of the dorsum being a dark black. Slightly smaller than Ps. serratus . Gonopods
Where is Pseudopolydesmus canadensis found?
Range: e.NA, particularly in central to northern Appalachia and the northeast; usually at higher elevations
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