| Ambrysus (Accytarus) funebris La Rivers, 1949 | Hairyflower buckwheat |
| Ambrysus (Ambrysus) amargosus La Rivers, 1953 | Ash Meadows naucorid |
| Ambrysus (Ambrysus) arizonus La Rivers, 1951 | Holmgren's buckwheat |
| Ambrysus (Ambrysus) buenoi Usinger, 1946 | Coriander |
| Ambrysus (Ambrysus) californicus Montandon, 1897 | Coriander |
| Ambrysus californicus bohartorum Usinger, 1946 | |
| Ambrysus californicus californicus Montandon, 1897 | |
| Ambrysus (Ambrysus) lunatus Usinger, 1946 | Coriander |
| Ambrysus lunatus lunatus Usinger, 1946 | |
| Ambrysus lunatus menoides La Rivers, 1953 | |
| Ambrysus (Ambrysus) melanopterus Stål, 1862 | |
| Ambrysus (Ambrysus) mormon Montandon, 1909 | |
| Ambrysus mormon australis La Rivers, 1953 | |
| Ambrysus mormon heidemanni Montandon, 1910 | |
| Ambrysus mormon minor La Rivers, 1963 | |
| Ambrysus mormon mormon Montandon, 1909 | |
| Ambrysus (Ambrysus) occidentalis La Rivers, 1951 | Holmgren's buckwheat |
| Ambrysus (Ambrysus) pudicus Stål, 1862 | Coriander |
| Ambrysus pudicus barberi Usinger, 1946 | |
| Ambrysus pudicus pudicus Stål, 1862 | |
| Ambrysus (Ambrysus) pulchellus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus pulchellus nitidulus Montandon, 1909 | |
| Ambrysus pulchellus pallidulus Montandon, 1910 | |
| Ambrysus pulchellus pulchellus Montandon, 1897 | |
| Ambrysus (Ambrysus) puncticollis Stål, 1876 | |
| Ambrysus (Ambrysus) signoreti Stål, 1862 | |
| Ambrysus (Ambrysus) thermarum La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus (Ambrysus) woodburyi Usinger, 1946 | |
| Ambrysus (Syncollis) circumcinctus Montandon, 1910 | Woollyleaf manzanita |
| Ambrysus circumcinctus caliginosus Usinger, 1946 | |
| Ambrysus circumcinctus circumcinctus | |
| Ambrysus circumcinctus concavus La Rivers, 1967 | |
| Ambrysus circumcinctus extremus La Rivers, 1967 | |
| Ambrysus abortus La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus acutangulus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus angularis La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus attenuatus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus ayoyolin Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus baeus J.Polhemus &..., 1981 | |
| Ambrysus barberi Usinger, 1946 | |
| Ambrysus bergi Montandon, 1897 | Sand mesa manzanita |
| Ambrysus bifidus La Rivers & ..., 1972 | |
| Ambrysus bispinus La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus bowlesi Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus brailovskyi Reynoso-Vela..., 2019 | |
| Ambrysus brunneus Sites, 2015 | |
| Ambrysus caliginosus Usinger, 1946 | |
| Ambrysus calilegua López Ruf, 2007 | |
| Ambrysus cayo Sites & Shepard, 2015 | |
| Ambrysus chiapanecus Reynoso, Sit..., 2016 | |
| Ambrysus chinanteco Reynoso & Sites, 2018 | |
| Ambrysus colimanus J.Polhemus &..., 1981 | |
| Ambrysus colombicus Montandon, 1909 | |
| Ambrysus compressicollis | |
| Ambrysus contrerasi Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus convexus Usinger, 1946 | Coriander |
| Ambrysus cosmius La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus crenulatus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus drakei La Rivers, 1957 | Howell's buckwheat |
| Ambrysus dyticus | |
| Ambrysus fittkaui De Carlo, 1956 | |
| Ambrysus fossatus Usinger, 1946 | Coriander |
| Ambrysus fraternus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus fucatus Berg, 1879 | |
| Ambrysus fuscus Usinger, 1946 | Coriander |
| Ambrysus geayi Montandon, 1897 | Sand mesa manzanita |
| Ambrysus gemignanii De Carlo, 1950 | |
| Ambrysus guttatipennis Stål, 1876 | |
| Ambrysus harmodius La Rivers, 1962 | |
| Ambrysus henryi Reynoso-Vela..., 2019 | |
| Ambrysus hintoni Usinger, 1946 | |
| Ambrysus horvathi Montandon, 1909 | |
| Ambrysus hungerfordi Usinger, 1946 | Coriander |
| Ambrysus hungerfordi angularis La Rivers, 1953 | |
| Ambrysus hungerfordi hungerfordi Usinger, 1946 | |
| Ambrysus hungerfordi spicatus La Rivers, 1953 | |
| Ambrysus hungerfordi triunfo La Rivers, 1953 | |
| Ambrysus hybridus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus hydor La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus inflatus La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus infuscatus Usinger, 1946 | |
| Ambrysus itsipatsari Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus kolla López Ruf, 2004 | |
| Ambrysus lamprus Nieser, Pell..., 1999 | |
| Ambrysus lariversi Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus lattini La Rivers, 1976 | |
| Ambrysus lundbladi Usinger, 1946 | Coriander |
| Ambrysus magniceps La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus maldonadus La Rivers, 1954 | |
| Ambrysus maya Sites & Reynoso, 2015 | |
| Ambrysus mexicanus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus montandoni La Rivers, 1963 | |
| Ambrysus noveloi Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus oblongulus Montandon, 1897 | Sand mesa manzanita |
| Ambrysus obscuratus Montandon, 1898 | Bonny Doon manzanita |
| Ambrysus ochraceus Montandon, 1909 | |
| Ambrysus partridgei De Carlo, 1968 | Emory's milkvetch |
| Ambrysus parviceps Montandon, 1897 | Sand mesa manzanita |
| Ambrysus peruvianus Montandon, 1909 | |
| Ambrysus planus La Rivers, 1951 | Holmgren's buckwheat |
| Ambrysus planus planus La Rivers, 1951 | |
| Ambrysus planus plax La Rivers, 1967 | |
| Ambrysus plautus J.Polhemus &..., 1983 | |
| Ambrysus portheo La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus pygmaeus La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus quadracies La Rivers, 1976 | |
| Ambrysus relictus Polhemus & P..., 1994 | |
| Ambrysus rotundus La Rivers, 1962 | |
| Ambrysus scalenus La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus schuhi Reynoso-Vela..., 2019 | |
| Ambrysus scolius La Rivers, 1970 | Frosted buckwheat |
| Ambrysus shorti Sites, 2015 | |
| Ambrysus siolii De Carlo, 1966 | |
| Ambrysus sitesi Reynoso-Vela..., 2019 | |
| Ambrysus sonorensis Usinger, 1946 | Coriander |
| Ambrysus spicatus La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus spiculus J.Polhemus &..., 1981 | |
| Ambrysus stali La Rivers, 1962 | |
| Ambrysus teutonius La Rivers, 1951 | Holmgren's buckwheat |
| Ambrysus totonacus Reynoso, Sit..., 2016 | |
| Ambrysus tricuspis La Rivers, 1974 | |
| Ambrysus tridentata La Rivers, 1962 | |
| Ambrysus triunfo La Rivers, 1953 | Hooker's buckwheat |
| Ambrysus truncaticollis De Carlo, 1935 | |
| Ambrysus ultimus La Rivers, 1976 | |
| Ambrysus usingeri La Rivers, 1952 | |
| Ambrysus vanduzeei Usinger, 1946 | Coriander |
| Ambrysus variegatus Usinger, 1946 | Coriander |
| Ambrysus veracruzanus Reynoso & Sites, 2016 | Tooth Cave pseudoscorpion |
| Ambrysus wichi López Ruf, 2013 | |
| Ambrysus xico Reynoso, Sit..., 2016 | |
| Carvalhoiella acuminata Rodrigues & ..., 2016 | |
| Carvalhoiella beckeri De Carlo, 1963 | |
| Carvalhoiella helenae Rodrigues & ..., 2016 | |
| Carvalhoiella maldonadus La Rivers, 1954 | |
| Carvalhoiella montandoni La Rivers, 1963 | |
| Carvalhoiella nitida La Rivers, 1976 | |
| Carvalhoiella stysi Nieser, Pell..., 1999 | |
| Hygropetrocoris guyana Sites, 2015 | |
| Picrops tuberculatus Sites, Rodri..., 2017 | |
| Picrops usingeri La Rivers, 1952 | |
