Cosmetidae is a family of harvestmen in the suborder Laniatores. With over 700 species, it is one of the largest families in Opiliones. They are endemic of the New World with a Nearctic-Neotropical distribution where a large fraction of the diversity of Opiliones are represented by this single family. Cosmetidae have the northern extent of their range into the USA, where a small number species occur in the southern states. However, the family is especially diverse in Mexico, Central America and northern South America; especially the Andean realms. Their range also extends further south into Argentina and southern Brazil, but they are absent in Chile. Cosmetidae are prevalent in Amazonian region, but only relatively few also occur in Brazilian Atlantic Forest. Several species are also found in the Caribbean.
Dyspnoi is a suborder of harvestmen, currently comprising 43 extant genera and 356 extant species, although more species are expected to be described in the future. The eight families are currently grouped into three superfamilies: the Acropsopilionoidea, Ischyropsalidioidea, and Troguloidea.
Nipponopsalididae is a family of harvestmen with three described species in one genus, Nipponopsalis, which is found in East Asia.
The Nemastomatidae are a family of harvestmen with about 170 described species in 16 recent genera. Several fossil species and genera are known.
The Dicranolasmatidae are a monotypic family of harvestmen with 16 described species in a single genus, Dicranolasma.
Asiolasma ailaoshan is a species of harvestman belonging to the family Nemastomatidae. It is endemic to Yunnan Province, China. It was initially described in the genus Cladolasma before being redefined within Asiolasma when that genus was newly described.
Cladolasma, is a genus of harvestmen belonging to the family Nemastomatidae. The genus is monotypic containing 1 species Cladolasma parvulum Suzuki, 1963. They are endemic to Japan, with records in Ehime and Tokushima Prefectures. The genus was described by Seisho Suzuki, with the type species Cladolasma parvulum Suzuki, 1963, subsequently revised to Dendrolasma parvulum in Suzuki (1974), but later restored as a valid genus.
Asiolasma angka, is a species of harvestmen belonging to the family Nemastomatidae. It is found in Chiang Mai, Thailand. It was initially described in the genus Dendrolasma before being transferred in genus Cladolasma, then later redefined within Asiolasma when that genus was newly described.
Cladolasma parvulum, is a species of harvestman belonging to the family Nemastomatidae. It is found in Japan.
Ortholasma is a genus of harvestmen in the family Nemastomatidae with 5 described species. The genus has been revised by Shear (2010).
Dendrolasma is a genus of harvestmen in the family Nemastomatidae with two described species . Both species are found in the western coast of North America. An overview of the taxonomy was provided by Schönhofer (2013)
Ortholasmatinae is a subfamily of harvestmen in the family Nemastomatidae with 27 described species in 7 genera. They are found in temperate and often mountainous regions of the Northern Hemisphere.
Nemastomatinae is a subfamily of harvestmen with 123 described species in 18 genera.
Asiolasma is a genus of harvestmen in the family Nemastomatidae with six described species . The species are found in Southeast Asia, namely China, Vietnam and Thailand. Some species are treated under other genera in Schönhofer (2013).
Asiolasma billsheari is a species of harvestmen belonging to the family Nemastomatidae. It is found in China, Gansu Province. It was described in the genus Asiolasma.
Asiolasma schwendingeri is a species of harvestmen belonging to the family Nemastomatidae. It is found in Vietnam, Ha Noi Province. It was described in the genus Asiolasma.
Asiolasma juergengruberi is a species of harvestmen belonging to the family Nemastomatidae. It is endemic to northern Yunnan Province China. It was described in the genus Asiolasma.
Cryptolasma is a genus of harvestmen in the family Nemastomatidae with two described species . Both species are found in the Central eastern region of Mexico in Veracruz state.
Martensolasma is a genus of harvestmen in the family Nemastomatidae with two described species . Both species are found in Mexico. The type species was include in catalog by Schönhofer (2013). The genus Martensolasma was described by William Shear, with the type species Martensolasma jocheni Shear, 2006. A second species was later added to the genus by Cruz-López, 2017.
