
Belongs within: Trhypochthoniidae.
Trhypochthonius is a cosmopolitan genus of mites found in peatlands, litter and moss.
Characters (from Balogh & Balogh 1992): Bothridial sensillus present. Notogaster without differentiated long setae. Epimeral setal formula 3-1-3-3. Genital and anal plates of macropyline type, large, occupying entire ventral side posterior to epimeres; ten pairs of genital setae, genital plates without transverse suture; aggenital setae absent; one pair of anal setae; three pairs of adanal setae. Legs with three tarsal claws.
<==Trhypochthonius Berlese 1904 [incl. Albonothrus Tseng 1982, Trilohmannia Willmann 1923, Tumidalvus Ewing 1908]S04 |--*T. tectorum (Berlese 1896)S04 (see below for synonymy) | |--T. t. tectorum [incl. T. monodactylus Mihelčič 1957]S04 | |--T. t. congregator Grandjean 1940S04 | `--T. t. spinosus Kulijev 1968S04 |--T. africanus Balogh 1958 (n. d.)S04 |--T. americanus (Ewing 1908) [=Tumidalvus americanus]S04 |--T. cladonicola (Willmann 1919) [=Camisia cladonicola]S04 |--T. conspectus Sergienko 1991S04 |--T. elegantulus Schweizer 1956 (n. d.)S04 |--T. fujinitaensis Fujikawa 2000S04 |--T. hammerae Schweizer 1956 (n. d.)S04 |--T. japonicus Aoki 1970S04 |--T. javanus Csiszár 1961S04 |--T. longipes Warburton 1912 (n. d.) [=T. tectorum longipes]S04 |--T. lopezvalleiSC19 |--T. misumaiensis Fujikawa 2000S04 |--T. montanus Hammen 1952S04 |--T. multisulcatus (Tseng 1982) (n. d.)S04 [=*Albonothrus multisulcatusBB92] |--T. nigricans Willmann 1928S04 |--T. ruttneri Willmann 1931S04 |--T. sclerotrichus Willmann 1923 [=T. cladonicola sclerotrichus]S04 |--T. septentrionalis Fujikawa 1995S04 |--T. setantis Golosova 1983S04 |--T. silvestris Jacot 1937S04 |--T. sphagnicola Weigmann 1997S04 |--T. stercus Fujikawa 2000S04 |--T. tablasotus Schweizer 1956 (n. d.)S04 `--T. tepoztecus Palacios-Vargas & Iglesias 1997S04
*Trhypochthonius tectorum (Berlese 1896)S04 [=Hypochthonius tectorumS04, Malaconothrus tectorumL87a, Nothrus tectorumL87b; incl. Tumidalvus mutsalpina Kishida 1931S04]
*Type species of generic name indicated
References
[BB92] Balogh, J., & P. Balogh. 1992. The Oribatid Mites Genera of the World vol. 1. Hungarian Natural History Museum: Budapest.
[L87a] Luxton, M. 1987a. The oribatid mites (Acari: Cryptostigmata) of J. E. Hull. Journal of Natural History 21: 1273–1291.
[L87b] Luxton, M. 1987b. The British oribatid mites (Acari: Cryptostigmata) of Warburton and Pearce. Journal of Natural History 21: 1359–1365.
[SC19] Schaefer, I., & T. Caruso. 2019. Oribatid mites show that soil food web complexity and close aboveground-belowground linkages emerged in the early Paleozoic. Communications Biology 2: 387.
[S04] Subías, L. S. 2004. Listado sistemático, sinonímico y biogeográfico de los ácaros oribátidos (Acariformes, Oribatida) del mundo (1758–2002). Graellsia 60 (número extraordinario): 3–305.