Chordeumatida
Guides
Anthroleucosomatidae
Anthroleucosomatidae is a family of small to medium-sized millipedes in the order Chordeumatida, with approximately 19 genera and at least 40 described species. The family exhibits a core distribution centered on the Balkans and Caucasus region, extending eastward to Iran and central Siberia, with one highly disjunct North American species in Washington State. Many species are troglobionts (obligate cave-dwellers), including the world's deepest-occurring millipede, Heterocaucaseuma deprofundum, found below 2,000 meters in Krubera-Voronja Cave. The family shows exceptional diversity in the Caucasus, where 15 new genera and 36 new species were described in a single monograph.
Austrotyla stephensoni
Austrotyla stephensoni is a species of millipede in the family Conotylidae, described by Shear & Steinmann in 2013. It belongs to the order Chordeumatida, a group of small to medium-sized millipedes commonly known as silk-spinning or short-back millipedes. The genus Austrotyla is endemic to the southern Appalachian region of the United States. This species appears to be rare and poorly known, with limited observational records.
Cleidogona major
Cleidogona major is a species of millipede in the family Cleidogonidae, order Chordeumatida. It was described by Cook and Collins in 1895. The species belongs to a group of small to medium-sized millipedes commonly known as "snake millipedes" or "bristly millipedes" in the order Chordeumatida, which are characterized by relatively short bodies compared to other millipede orders.
Conotyla blakei
Conotyla blakei is a millipede species in the family Conotylidae, described by Verhoeff in 1932. It belongs to the order Chordeumatida, a group of small millipedes commonly known as silk-spinning or short-bodied millipedes. The species has been recorded in North America. Information regarding its biology and ecology remains limited.
Conotyla ocypetes
Conotyla ocypetes is a species of millipede in the family Conotylidae, order Chordeumatida. It was described by Shear in 1971. This species belongs to a small family of millipedes within the class Diplopoda. Very little published information exists regarding its biology or ecology.
Conotylidae
Conotylidae is a family of millipedes in the order Chordeumatida, containing approximately 19 genera and at least 60 described species. Adult members possess 30 body segments, counting the collum as the first and the telson as the last. The family exhibits its highest diversity in northwestern North America, where five of six subfamilies and ten of fourteen previously described genera occur. Several species are troglobiotic, restricted to cave environments, and some are considered climatic relicts from the Pleistocene.
Craspedosoma rawlinsii
A small European millipede in the family Craspedosomatidae, notable as the first chordeumatidan species introduced to North America. Adults reach 15–16 mm in length with 30 body segments and distinctive reddish-brown coloration with dark dorsal markings. The species exhibits extreme morphological variability, leading to the description of numerous subspecies and varieties across its range.
Craspedosomatidae
Craspedosomatidae is a family of millipedes in the order Chordeumatida. The family contains at least 30 genera and approximately 210 described species. Adult individuals typically possess 30 body segments (counting the collum and telson), though some species have 28. Members of this family are known for complex male genitalia involved in sperm transfer during mating.
Leschius
Leschius is a genus of millipedes in the family Anthroleucosomatidae, established in 2004 to accommodate Leschius mcallisteri from Washington State, USA. This genus represents the first and only North American representative of a family otherwise restricted to the Palearctic region. The genus is distinguished by morphological features including small body size, reduced segment number, and highly modified male ninth legs.
Ochrogramma bentona
Ochrogramma bentona is a millipede species in the family Caseyidae, order Chordeumatida. It was described by Chamberlin in 1952. The species is known from North America and belongs to a group of small-bodied millipedes commonly called "snake millipedes" or "bristly millipedes" due to their elongated, slender form and setose bodies. Like other chordeumatidans, it likely inhabits moist forest floor habitats.
Opiona
Opiona is a genus of millipedes in the family Caseyidae, established by Chamberlin in 1951. The genus comprises approximately 16 described species. These millipedes belong to the order Chordeumatida, a group commonly known as the "snake millipedes" or "whip millipedes." The genus has been documented in the Pacific Northwest region of North America.
Opiona columbiana
Opiona columbiana is a small millipede species in the family Caseyidae, described by Chamberlin in 1951. It belongs to the order Chordeumatida, a group of short-bodied millipedes commonly known as silk millipedes or bristly millipedes. The species has documented populations in the Pacific Northwest region of North America.
Rhiscosomididae
Rhiscosomididae is a small family of millipedes in the order Chordeumatida, containing the single genus Rhiscosomides with seven described species. The family was established by Silvestri in 1909. These millipedes are known from western North America, with records from British Columbia, Washington, Oregon, and California.
Scoterpes sollmani
Scoterpes sollmani is a troglobiotic millipede described by Lewis in 2000 from cave systems in southern Indiana. As a member of genus Scoterpes, it is one of multiple cave-adapted species in this exclusively troglobiotic group. The species belongs to the small family Trichopetalidae within the order Chordeumatida, a group of small-bodied millipedes. No specific morphological details distinguishing S. sollmani from congeners are provided in available sources.
Striaria
Striaria is a genus of millipedes in the family Striariidae, order Chordeumatida. The genus was established by Bollman in 1888. These small, eyeless millipedes are part of the diverse soil-dwelling fauna of temperate forests. The name Striaria is also used for a genus of brown algae (Phaeophyceae), but this represents a separate taxonomic entity in a different kingdom.
Tingupidae
Tingupidae is a family of small millipedes in the order Chordeumatida, containing two genera (Blancosoma and Tingupa) and 13 described species. Adults possess 28 or 30 body segments including the collum and telson. The family occurs in western North America, with records extending from Alaska and British Columbia south to California and east to Arkansas.
Trichopetalidae
Trichopetalidae is a family of small millipedes in the order Chordeumatida. Adults possess 28 or 30 body segments, counting the collum as the first and the telson as the last. The family comprises seven genera and approximately 43 species, with members exhibiting diverse ecological strategies ranging from surface-dwelling to obligate cave-dwelling (troglobitic) lifestyles.
Trichopetalum
A genus of millipedes in the family Trichopetalidae, order Chordeumatida. Contains seven described species, all surface-dwelling or troglophilic. The genus is notable for the first documented authentic chordeumatidan spermatophores and the production of a sticky defensive secretion from segmental setae bases. Species occur in North America, primarily the United States.
Trichopetalum lunatum
Crescent Moon Millipede
Trichopetalum lunatum is a surface-dwelling or troglophilic millipede in the family Trichopetalidae, originally described by Harger in 1872. It is one of seven species in the genus Trichopetalum, which is distinguished from the fully troglobiotic genera Zygonopus and Scoterpes by its non-cave-adapted lifestyle. The species is known to produce a sticky secretion from the bases of its segmental setae, possibly serving a defensive function.
Underwoodia iuloides
Underwoodia iuloides is a millipede species in the family Caseyidae. It is one of three species in the genus Underwoodia, which exhibits a Holarctic distribution pattern. The species is characterized by specific configurations of the anterior gonopod colpocoxites, particularly branches a and c. Populations show a strongly female-biased sex ratio, suggesting parthenogenesis.
Vasingtona
Vasingtona is a genus of millipedes in the family Caseyidae, established by Chamberlin in 1941. The genus contains at least one described species, V. irritans. These millipedes belong to the order Chordeumatida, a group of small, often cryptic millipedes commonly known as snake millipedes or bristly millipedes.