Paeromopodidae
Californiulus chamberlini
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Myriapoda
Class: Diplopoda
Order: Julida
Family: Paeromopodidae
Cook, 1895
Genera
Synonyms

Paeromopidae
Californiulidae

Paeromopodidae is a family of large cylindrical millipedes of the order Julida native to the western United States of America. The family contains two genera and ten species and includes the longest millipedes in North America, with individuals reaching up to 16.5 cm (6.5 in) long.[1][2]

Description

Paeromopodids possess 60 to 80 body segments and range from 5 to 16.5 cm (2.0 to 6.5 in) long and 2 to 8 mm wide as adults. Paeromopodids have distinct parallel grooves called striae on their body rings that give a somewhat roughened texture and distinguishes them from other cylindrical western millipedes. Individuals may be rather uniformly blue gray, or colored in alternating bands of light and dark brown, or may possess a dorsal lengthwise stripe of yellow or light brown.[1]

Distribution

Paeromopodids are endemic to the United States and occur in two distinct areas: the first is a large Pacific coast range extending from Washington state to the southern Sierra Nevada and Death Valley region of California and east to the Warner Mountains straddling the borders of California, Oregon, and Nevada; and the second is a region spanning extreme northeastern Oregon, across the Idaho Panhandle to western Montana.[1][3] Species of Paeromopus are generally larger than Californiulus, and occur only in California. Species of Californiulus occur in California as well as the rest of the range of the family.[1]

Ecology and behavior

Paeromopodids are relatively active and fast-moving millipedes, with a high degree of flexibility. Many species are found under rocks or moist, rotten logs as opposed to buried in leaf litter, and species of Californiulus may prefer drier microhabitats than Paeromopus.[1] C. blechrostriatus inhabits the arid eastern slopes of the Sierra into Death Valley, and has been found at elevations of up to 2,400 m (8,000 ft).[3]

Species

Genus Californiulus

Genus Paeromopus

References

  1. 1 2 3 4 5 Shelley, Rowland M. (1994). "Revision of the milliped family Paeromopodidae, and elevation of the Aprosphylosomatinae to family status (Julida: Paeromopodoidea)". Entomologica Scandinavica. 25 (2): 169–214. doi:10.1163/187631294X00298.
  2. ↑ Loomis, H. F. (1972). "Some Notes on the milliped family Paeromopidae, with a description of a new species". The Florida Entomologist. 55 (4): 259–262. doi:10.2307/3493377. JSTOR 3493377.
  3. 1 2 Shelley, R. M.; Bauer, S. B. (1997). "New records and species, and taxonomic alterations in the milliped family Paeromopodidae (Julida)". Entomological News. 108 (1): 1–14.
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