Paeromopellus Verhoeff, 1938 Paeromopus is a genus of large cylindrical millipedes endemic to the U.S. state of California.

Paeromopus millipedes are long and cylindrical, measuring 10 to 16.5 cm (3.9 to 6.5 in) in length and up to 8 mm (0.3 in) wide, with 68 to 80 body segments.

Like other paeromopodids, species of Paeromopus have fine parallel grooves (striae or striations) on each body segment, giving a somewhat roughened appearance.

[3][6] The genus Paeromopus was first named in 1881 by German entomologist Ferdinand Karsch,[7] however the earliest-named species now assigned to Paeromopus, P. angusticeps, was described in 1864 by the American naturalist Horatio C Wood under the name Spirobolus angusticeps, based on specimens collected in San Francisco.

Subsequently P. lysiopetalinus was recognized as a taxonomic synonym of P. angusticeps- a different name applied to what turned out to be the same species.