Apterourus
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| Apterourus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Myriapoda |
| Class: | Diplopoda |
| Order: | Chordeumatida |
| Family: | Apterouridae |
| Genus: | Apterourus Loomis, 1966 |
| Type species | |
| Apterourus horizontalis Loomis, 1966 | |
| Species | |
| |
Apterourus is a genus of millipedes in the monotypic family Apterouridae, which contains no other genera.[1] The genus belongs to the suborder Striariidea and the superfamily Striarioidea. Adult individuals possess exactly 30 body segments, counting the collum as the first segment and the telson as the last.[2] The genus is endemic to California, United States, and currently comprises three described species.[3]
The genus Apterourus and the family Apterouridae were established by the American myriapodologist H. F. Loomis in 1966.[4] The description was based on a single male specimen of the type species, Apterourus horizontalis, collected in 1929 at Cajon Pass in San Bernardino County, California.
The genus remained monotypic for several decades. A second species, Apterourus serratus, was described in 2003,[5] followed by a third species, Apterourus palomar, described in 2025.[6]