| Apocrangonyx araeus (Holsinger, 1969) | ⇒ Stygobromus araeus Holsinger, 1969 |
| Apocrangonyx ephemerus (Holsinger, 1969) | ⇒ Stygobromus ephemerus Holsinger, 1969 |
| Apocrangonyx nortoni (Holsinger, 1969) | ⇒ Stygobromus nortoni Holsinger, 1969 |
| Apocrangonyx parvus (Holsinger, 1969) | ⇒ Stygobromus parvus Holsinger, 1969 |
| Apocrangonyx subtilis (Hubricht, 1943) | ⇒ Stygobromus subtilis Hubricht, 1943 |
| Bactrurus angulus Koenemann & ..., 2001 | |
| Bactrurus brachycaudus Hubricht & M..., 1940 | Short-tail bactrurid |
| Bactrurus cellulanus Koenemann & ..., 2001 | |
| Bactrurus hubrichti Shoemaker, 1945 | Kansas well amphipod |
| Bactrurus macronatus Forbes, 1876 | |
| Bactrurus mucronatus Forbes, 1876 | Mucronate bactrurid |
| Bactrurus pseudomucronatus Koenemann & ..., 2000 | False sword-tailed cave amphipod |
| Bactrurus speleopolis Holsinger, S..., 2006 | |
| Bactrurus wilsoni Koenemann & ..., 2001 | |
| Crangonyx abberraus D. G. Smith, 1983 | |
| Crangonyx aberrans S.I. Smith, 1983 | Aberrant crangonyctid |
| Crangonyx acicularis Zhang & Hols..., 2003 | |
| Crangonyx aka Zhang & Hols..., 2003 | |
| Crangonyx alpinus Bousfield, 1983 | Alpine lake crangonyctid |
| Crangonyx anomalus Hubricht, 1943 | Anomalous spring amphipod |
| Crangonyx antennatus Cope & Packard, 1881 | Appalachian Valley cave amphipod |
| Crangonyx arsenjevi Derzjavin, 1927 | |
| Crangonyx baculispina Zhang & Hols..., 2003 | |
| Crangonyx barri Zhang & Hols..., 2003 | |
| Crangonyx bousfieldi Zhang & Hols..., 2003 | |
| Crangonyx caecus Zhang & Hols..., 2003 | |
| Crangonyx castellanum Zhang & Hols..., 2003 | |
| Crangonyx chlebnikovi Borutzky, 1928 | |
| Crangonyx chlebovnikovi Borutzky, 1928 | |
| Crangonyx compactus (Chilton, 1882) | ⇒ Paracrangonyx compactus Chilton, 1882 |
| Crangonyx consimilis Zhang & Hols..., 2003 | |
| Crangonyx cooperi Zhang & Hols..., 2003 | |
| Crangonyx cornutus Zhang & Hols..., 2003 | |
| Crangonyx dearolfi Shoemaker, 1942 | Dearolf's cave amphipod |
| Crangonyx disjunctus Zhang & Hols..., 2003 | |
| Crangonyx floridanus Bousfield, 1963 | Florida crangonyctid |
| Crangonyx fontinalis Zhang & Hols..., 2003 | |
| Crangonyx forbesi Hubricht & M..., 1940 | Forbes crangonyctid |
| Crangonyx gracilis S.I. Smith, 1871 | Northern lake crangonyctid |
| Crangonyx grandimanus Bousfield, 1963 | Florida Cave Amphipod |
| Crangonyx hobbsi Shoemaker, 1941 | Hobb's Cave Amphipod |
| Crangonyx hubrichti Zhang & Hols..., 2003 | |
| Crangonyx indianensis Zhang & Hols..., 2003 | |
| Crangonyx insolitus Zhang & Hols..., 2003 | |
| Crangonyx islandicus Svavarsson &..., 2006 | |
| Crangonyx lewisi Zhang & Hols..., 2003 | Lewis Cave Amphipod |
| Crangonyx longicarpus Zhang & Hols..., 2003 | |
| Crangonyx longidactylus Zhang & Hols..., 2003 | |
| Crangonyx macronatus (Forbes, 1876) | ⇒ Bactrurus macronatus Forbes, 1876 |
| Crangonyx minor Bousfield, 1958 | Minor cave amphipod |
| Crangonyx montanus Zhang & Hols..., 2003 | |
| Crangonyx obliquus (Hubricht & M..., 1940) | ⇒ Crangonyx occidentalis Hubricht & H..., 1941 |
| Crangonyx occidentalis Hubricht & H..., 1941 | |
| Crangonyx ohioensis Zhang & Hols..., 2003 | |
| Crangonyx orientalis Zhang & Hols..., 2003 | |
| Crangonyx packardi S.I. Smith, 1888 | Packard Cave Amphipod |
| Crangonyx palustris Zhang & Hols..., 2003 | |
| Crangonyx paxi Schellenberg, 1942 | |
| Crangonyx pseudogracilis Bousfield, 1958 | Northern river crangonyctid |
| Crangonyx richmondensis Ellis, 1941 | Contorted sphagnum |
| Crangonyx richmondensis laurentianus Bousfield, 1958 | Eastern bog crangonyctid |
| Crangonyx richmondensis occidentalis Hubricht and..., 1941 | Western bog crangonyctid |
| Crangonyx richmondensis richmondensis Ellis, 1940 | Ellis bog crangonyctid |
| Crangonyx rivularis Bousfield, 1958 | Ontario stream crangonyctid |
| Crangonyx serratus Embody, 1910 | Serrate crangonyctid |
| Crangonyx setodactylus Bousfield, 1958 | Hairy-fingered crangonyctid |
| Crangonyx shoemakeri Hubricht & M..., 1940 | Shoemaker crangonyctid |
| Crangonyx specus Zhang & Hols..., 2003 | |
| Crangonyx stagnicolous Zhang & Hols..., 2003 | |
| Crangonyx subterraneus Bate, 1859 | |
| Crangonyx sulphurium Sawicki & Ho..., 2017 | |
| Lyurella shepsiensis Sidorov, 2015 | |
| Palaeogammarus danicus ♰ Just, 1974 | |
| Stygobromus abditus Holsinger, 1978 | James Cave amphipod |
| Stygobromus ackerlyi Holsinger, 1978 | Ackerly cave stygobromid |
| Stygobromus alabamensis Stout, 1911 | Alabama groundwater amphipod |
| Stygobromus alabamensis alabamensis Stout, 1911 | Alabama groundwater amphipod |
| Stygobromus alabamensis occidentalis Holsinger, 1967 | Western stygobromid |
| Stygobromus albapinus Taylor & Hol..., 2011 | |
| Stygobromus allegheniensis Holsinger, 1967 | Allegheny cave amphipod |
| Stygobromus ambulans F. Müller, 1846 | |
| Stygobromus apscheronia Derzhavin, 1945 | |
| Stygobromus araeus Holsinger, 1969 | Tidewater interstitial amphipod |
| Stygobromus arizonensis Holsinger, 1974 | Arizona cave amphipod |
| Stygobromus balconis Hubricht, 1943 | Balcones cave amphipod |
| Stygobromus baroodyi Holsinger, 1978 | Rockbridge County cave amphipod |
| Stygobromus barri Holsinger, 1967 | Barr stygobromid |
| Stygobromus barryi Holsinger, 1978 | Blankenship Cave amphipod |
| Stygobromus bifurcatus Holsinger, 1967 | Bifurcated cave amphipod |
| Stygobromus biggersi Holsinger, 1978 | Biggers cave stygobromid |
| Stygobromus blinni Wang & Holsi..., 2001 | |
| Stygobromus borealis Holsinger, 1978 | New England cave amphipod |
| Stygobromus boultoni Wang & Holsi..., 2001 | |
| Stygobromus bowmani Holsinger, 1967 | Bowman stygobromid |
| Stygobromus caecilius Holsinger, 2011 | |
| Stygobromus canadensis Holsinger, 1980 | Castleguard Cave amphipod |
| Stygobromus carolinensis Holsinger, 1978 | Carolina groundwater amphipod |
| Stygobromus chamberlaini Ellis, 1941 | |
| Stygobromus cherylae Wang & Holsi..., 2001 | |
| Stygobromus clantoni Creaser, 1934 | Clanton stygobromid |
| Stygobromus coeca Dobreanu & M..., 1951 | |
| Stygobromus coeca rafalskii Skalski, 1983 | |
| Stygobromus coloradensis Ward, 1977 | Colorado groundwater amphipod |
| Stygobromus conradi Holsinger, 1967 | Burnsville Cove cave amphipod |
| Stygobromus cooperi Holsinger, 1967 | Cooper stygobromid |
| Stygobromus cowani Wang & Holsi..., 2001 | |
| Stygobromus culveri Holsinger, 1978 | Culver cave stygobromid |
| Stygobromus cumberlandus Holsinger, 1978 | Cumberland cave amphipod |
| Stygobromus curroae Wang & Holsi..., 2001 | |
| Stygobromus dejectus Holsinger, 1967 | Cascade cave amphipod |
| Stygobromus dicksoni Holsinger, 1978 | Dickson cave stygobromid |
| Stygobromus donensis Martynov, 1919 | |
| Stygobromus duplus Wang & Holsi..., 2001 | |
| Stygobromus elatus Holsinger, 1967 | Elevated spring amphipod |
| Stygobromus elliotti Holsinger, 1974 | Washington cave stygobromid |
| Stygobromus emarginatus Hubricht, 1943 | Greenbrier cave amphipod |
| Stygobromus ephemerus Holsinger, 1969 | Ephemeral cave amphipod |
| Stygobromus estesi Holsinger, 1978 | Craig County cave amphipod |
| Stygobromus exilis Hubricht, 1943 | Central Kentucky cave amphipod |
| Stygobromus fecundus Holsinger, 1978 | Cades Cove cave amphipod |
| Stygobromus felleri Holsinger, 2011 | |
| Stygobromus fergusoni Holsinger, 1978 | Montgomery County cave amphipod |
| Stygobromus finleyi Holsinger, 1978 | English Cave amphipod |
| Stygobromus flagellatus Benedict, 1896 | Ezell's Cave Amphipod |
| Stygobromus floridanus Holsinger & ..., 2016 | |
| Stygobromus foliatus Holsinger, 2011 | |
| Stygobromus fontinalis Wang & Holsi..., 2001 | |
| Stygobromus franzi Holsinger, 1978 | Franz stygobromid |
| Stygobromus gallawayae Wang & Holsi..., 2001 | |
| Stygobromus glacialis Wang & Holsi..., 2001 | Glacier amphipod |
| Stygobromus gracilipes Holsinger, 1969 | Shenandoah Valley cave amphipod |
| Stygobromus gradyi Holsinger, 1974 | Grady stygobromid |
| Stygobromus grahami Holsinger, 1974 | Graham stygobromid |
| Stygobromus grandis Holsinger, 1978 | Parker Cave amphipod |
| Stygobromus hadenoecus Holsinger, 1966 | Devil's Sinkhole Amphipod |
| Stygobromus harai Holsinger, 1974 | Hara stygobromid |
| Stygobromus hayi Hubricht & M..., 1940 | Hay spring stygobromid |
| Stygobromus herbsti Wang & Holsi..., 2001 | |
| Stygobromus heteropodus Hubricht, 1943 | Pickle Springs amphipod |
| Stygobromus hoffmani Holsinger, 1978 | Alleghany County cave amphipod |
| Stygobromus holsingeri Ward, 1977 | Holsinger stygobromid |
| Stygobromus hubbardi Holsinger, 2009 | |
| Stygobromus hubbsi Shoemaker, 1942 | Malheur Cave amphipod |
| Stygobromus hyporheicus Wang & Holsi..., 2001 | |
| Stygobromus idahoensis Wang & Holsi..., 2001 | |
| Stygobromus imperialis Wang & Holsi..., 2001 | |
| Stygobromus indentatus Holsinger, 1967 | Tidewater amphipod |
| Stygobromus inexpectatus Holsinger, 1978 | Meadows Cave amphipod |
| Stygobromus interitus Holsinger, 1978 | Murder Hole stygobromid |
| Stygobromus intermedia Dobreanu, Ma..., 1952 | |
| Stygobromus interstitialis Wang & Holsi..., 2001 | |
| Stygobromus iowae Hubricht, 1943 | Iowa amphipod |
| Stygobromus jakutana Martynov, 1931 | |
| Stygobromus jemezensis Wang & Holsi..., 2001 | |
| Stygobromus kenki Holsinger, 1978 | Kenk's amphipod |
| Stygobromus lacicolus Holsinger, 1974 | Deep lake amphipod |
| Stygobromus lanensis Wang & Holsi..., 2001 | |
| Stygobromus latus Wang & Holsi..., 2001 | |
| Stygobromus leensis Holsinger, 1978 | Lee County cave amphipod |
| Stygobromus limbus Wang & Holsi..., 2001 | |
| Stygobromus longidactylus S. Karaman, 1929 | |
| Stygobromus longipes Holsinger, 1966 | Long-legged cave amphipod |
| Stygobromus lucifugus Hay, 1882 | Dubious cave amphipod |
| Stygobromus mackenziei Holsinger, 1974 | Mackenzie's Cave Amphipod |
| Stygobromus mackini Hubricht, 1943 | Southwestern Virginia cave amphipod |
| Stygobromus mausi Holsinger, 2009 | |
| Stygobromus minutus Holsinger, 1978 | Pettijohn Cave amphipod |
| Stygobromus montanensis Holsinger, 1974 | Montana groundwater amphipod |
| Stygobromus montanus Holsinger, 1967 | Mountain cave amphipod |
| Stygobromus morrisoni Holsinger, 1967 | Morrison stygobromid |
| Stygobromus mundus Holsinger, 1967 | Bath County cave amphipod |
| Stygobromus myersae Wang & Holsi..., 2001 | |
| Stygobromus mysticus Holsinger, 1974 | Northern California groundwater amphipod |
| Stygobromus nanus Holsinger, 1978 | Piddling Pit Cave amphipod |
| Stygobromus nortoni Holsinger, 1969 | Norton stygobromid |
| Stygobromus obrutus Holsinger, 1978 | Pittsylvania stygobromid |
| Stygobromus obscurus Holsinger, 1974 | Obscure well amphipod |
| Stygobromus onondagaensis Hubricht & M..., 1940 | Onondaga Cave amphipod |
| Stygobromus oregonensis Holsinger, 1974 | Oregon cave amphipod |
| Stygobromus osellai Ruffo, 1974 | |
| Stygobromus ozarkensis Holsinger, 1967 | Ozark cave amphipod |
| Stygobromus parvus Holsinger, 1969 | Minute cave amphipod |
| Stygobromus paxillus Holsinger, 2011 | |
| Stygobromus pecki Holsinger, 1967 | Peck stygobromid |
| Stygobromus pennaki Ward, 1977 | Pennak stygobromid |
| Stygobromus phreaticus Holsinger, 1978 | Northern Virginia stygobromid |
| Stygobromus pizzinii Shoemaker, 1938 | Pizzini stygobromid |
| Stygobromus pollostus Holsinger, 1978 | Least cave amphipod |
| Stygobromus pseudospinosus Holsinger, 1978 | Luray Caverns amphipod |
| Stygobromus pusillus Martynov, 1930 | |
| Stygobromus putealis Holmes, 1909 | Wisconsin well amphipod |
| Stygobromus puteanus Holsinger, 1974 | Montana well amphipod |
| Stygobromus quatsinensis Holsinger & ..., 1987 | Vancouver Island cave amphipod |
| Stygobromus rallus Wang & Holsi..., 2001 | |
| Stygobromus redactus Holsinger, 1978 | Patton Cave amphipod |
| Stygobromus reddelli Holsinger, 1966 | Reddell stygobromid |
| Stygobromus rudolphi Wang & Holsi..., 2001 | |
| Stygobromus russelli Holsinger, 1967 | Russell stygobromid |
| Stygobromus saltuaris Wang & Holsi..., 2001 | |
| Stygobromus secundus Bousfield & ..., 1982 | Alberta spring amphipod |
| Stygobromus sextarius Holsinger, 2009 | |
| Stygobromus sheldoni Holsinger, 1974 | Sheldon stygobromid |
| Stygobromus sierrensis Holsinger, 1974 | Sierra spring amphipod |
| Stygobromus simplex Wang & Holsi..., 2001 | |
| Stygobromus smithi Hubricht, 1943 | Alabama well amphipod |
| Stygobromus sparsus Holsinger, 1978 | Gregory Cave stygobromid |
| Stygobromus spinatus Holsinger, 1967 | Southern West Virginia cave amphipod |
| Stygobromus spinosus Hubricht & M..., 1940 | Blue Ridge Mountain amphipod |
| Stygobromus stadukhini Derzhavin, 1930 | |
| Stygobromus stegerorum Holsinger, 1978 | Madison Cave amphipod |
| Stygobromus stellmacki Holsinger, 1967 | Stellmack cave stygobromid |
| Stygobromus subtilis Hubricht, 1943 | Subtle cave amphipod |
| Stygobromus tahoensis Holsinger, 1974 | Lake Tahoe amphipod |
| Stygobromus tenuis S.I. Smith, 1874 | Potomac groundwater amphipod |
| Stygobromus tenuis potomacus Holsinger, 1967 | Potomac groundwater amphipod |
| Stygobromus tenuis tenuis S. I. Smith, 1874 | Slender stygobromid |
| Stygobromus trinus Wang & Holsi..., 2001 | |
| Stygobromus tritus Holsinger, 1974 | Worn stygobromid |
| Stygobromus urospinatus Wang & Holsi..., 2001 | |
| Stygobromus utahensis Wang & Holsi..., 2001 | |
| Stygobromus vitreus Cope, 1872 | Mammoth Cave amphipod |
| Stygobromus wahkeenensis Wang & Holsi..., 2001 | |
| Stygobromus wardi Wang & Holsi..., 2001 | |
| Stygobromus wengerorum Holsinger, 1974 | Wenger cave stygobromid |
| Stygonyx courtneyi Bousfield & ..., 1989 | |
| Synpleonia clantoni (Creaser, 1934) | ⇒ Stygobromus clantoni Creaser, 1934 |
| Synurella ambulans (Müller, 1846) | ⇒ Stygobromus ambulans F. Müller, 1846 |
| Synurella ambulans longidactylus S. Karaman, 1929 | |
| Synurella bifurca Hay, 1882 | |
| Synurella chamberlaini Ellis, 1941 | |
| Synurella coeca (Dobreanu & M..., 1951) | ⇒ Stygobromus coeca Dobreanu & M..., 1951 |
| Synurella dentata Hubricht, 1943 | |
| Synurella donensis (Martynov, 1919) | ⇒ Stygobromus donensis Martynov, 1919 |
| Synurella intermedia (Dobreanu, Ma..., 1952) | ⇒ Stygobromus intermedia Dobreanu, Ma..., 1952 |
| Synurella jacutana | |
| Synurella jakutana (Martynov, 1931) | ⇒ Stygobromus jakutana Martynov, 1931 |
| Synurella johanseni Shoemaker, 1920 | |
| Synurella longidactylus (S. Karaman, 1929) | ⇒ Stygobromus longidactylus S. Karaman, 1929 |
| Synurella osellai (Ruffo, 1974) | ⇒ Stygobromus osellai Ruffo, 1974 |
| Synurella stadukhini (Derzhavin, 1930) | ⇒ Stygobromus stadukhini Derzhavin, 1930 |
| Synurella tenebrarum (Wrzesniowski, 1888) | ⇒ Stygobromus ambulans F. Müller, 1846 |
