Underwoodia iuloides
This record describes Underwoodia iuloides (species). Recorded family: Caseyidae. Recorded order: Chordeumatida.
Identification and Appearance

Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Diplopoda
- Order
- Chordeumatida
- Family
- Caseyidae
- Genus
- Underwoodia
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
across n. US & Canada to the Rockies (with an allopatric sexual population in ne.NM)
Diet and Behavior
Life History
parthenogenetic (an allopatric sexual population in ne.NM)
Additional species information
Species notes from the sources
Etymology: Underwoodia iuloides (Harger 1872)
About Chordeumatida: the wider group
Order-level background for Chordeumatida, the group containing Underwoodia iuloides. Species-specific details appear above.
Group overview
Chordeumatida includes ~800 described species of small, pale millipedes typically found in leaf litter and caves. Many species are endemic to specific mountain ranges or cave systems, making them important for conservation biology.
Ecological role of the group
These millipedes are important decomposers in cool, moist forest habitats. Their restricted distributions make them valuable indicators of ancient habitat connectivity and refugia from past ice ages.
Economic and practical significance of the group
Chordeumatid millipedes have minimal economic impact. Several cave-dwelling species are critically endangered due to their extremely limited distributions and sensitivity to habitat disturbance.
Recorded sources for this group: Conservation biology, cave fauna research. Imported estimates may describe particular regions or reporting periods.
Photos of Underwoodia iuloides (5)
Photo credits: Contributed by john and jane balaban; Additional contributions by v belov
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