(Theristus) (Theristus) is a biological genus in the family Monhysteridae and order Monhysterida.
Theristus acer
Theristus ambronensis
Theristus arcticus
Theristus australis
Theristus biarcospiculum
Theristus buetschlii
Theristus buetschlioides
Theristus calx
Theristus camelopardalis
Theristus leptosoma
Theristus littoralis
Theristus metaflavensis
Theristus modicus
Theristus oistospiculum
Theristus ostentator
Theristus otoplanobius
Theristus paraelaboratus
Theristus parambronensis
Theristus parvulus
Theristus polychaetophilus
Theristus problematicus
Theristus rhynchonemoides
Theristus sinuosus
Theristus uncinatus
Theristus wimmeri
Amphimonhystera
Amphimonhystrella
Austronema
Branchinema
Cenolaimus
Cobbia
Cylindrotheristus
Dactylaimus
Diplolaimella
Diplolaimelloides
Echinotheristus
Elzalia
Filipjeva
Gammarinema
Gonionchus
Hofmaenneria
Litotes
Longilaimus
Megalamphis
Mesotheristus
Metadesmolaimus
Monhystera
Monhystrella
Monhystrium
Odontobius
Omicronema
Paramonohystera
Promonhystera
Pseudosteineria
Pseudotheristus
Pulchranemella
Rhynchonema
Sitadevinema
Sphaerotheristus
Spiramphinema
Spirotheristus
Steineria
Theristus
Trichotheristus
Tripylium
Tubolaimus
Wieserius
Xenolaimus
Xyala
Zygonemella