Find out what mammals, insects, fish, plants, etc. are endangered here. Use the selection box below to view full lists by group.
The following is a list of all endangered crustaceans.
| | Species Name | Scientific Name | Range |
|---|
| 1. | Acanthocyclops hypogeus | Acanthocyclops hypogeus | Slovenia |
| 2. | Adeleana forcarti | Adeleana forcarti | Indonesia |
| 3. | Aglaodiaptomus kingsburyae | Aglaodiaptomus kingsburyae | United States |
| 4. | Aglaodiaptomus marshianus | Aglaodiaptomus marshianus | United States |
| 5. | Alabama Cave Shrimp | Palaemonias alabamae | Alabama |
| 6. | Allacanthos pittieri | Allacanthos pittieri | Costa Rica, Panama |
| 7. | Allodiaptomus satanas | Allodiaptomus satanas | India |
| 8. | Alona hercegovinae | Alona hercegovinae | Bosnia and Herzegovina |
| 9. | Alona sketi | Alona sketi | Slovenia |
| 10. | Alona smirnovi | Alona smirnovi | Republic of Macedonia |
| 11. | Antrisocopia prehensilis | Antrisocopia prehensilis | Bermuda - North Atlantic Ocean |
| 12. | Aquadulcaris pheronyx | Aquadulcaris pheronyx | South Africa |
| 13. | Arctodiaptomus burduricus | Arctodiaptomus burduricus | Turkey |
| 14. | Arctodiaptomus euacanthus | Arctodiaptomus euacanthus | India |
| 15. | Arctodiaptomus kamtschaticus | Arctodiaptomus kamtschaticus | Russia |
| 16. | Arctodiaptomus michaeli | Arctodiaptomus michaeli | India |
| 17. | Astacoides crosnieri | Astacoides crosnieri | Madagascar |
| 18. | Astacoides petiti | Astacoides petiti | Madagascar |
| 19. | Atlantasellus cavernicolus | Atlantasellus cavernicolus | Bermuda - North Atlantic Ocean |
| 20. | Atyid Shrimp | Typhlatya iliffei | Bermuda - North Atlantic Ocean |
| 21. | Austrothelphusa tigrina | Austrothelphusa tigrina | Australia |
| 22. | Austrothelphusa valentula | Austrothelphusa valentula | Australia |
| 23. | Austrothelphusa wasselli | Austrothelphusa wasselli | Australia |
| 24. | Balcones Cave Shrimp | Palaemonetes antrorum | Texas |
| 25. | Bastrop Crayfish | Procambarus texanus | Texas |
| 26. | Benton County Cave Crayfish | Cambarus aculabrum | Arkansas |
| 27. | Bermuda Cave Amphipod | Pseudoniphargus grandimanus | Bermuda - North Atlantic Ocean |
| 28. | Big Blue Spring Cave Crayfish | Procambarus horsti | Florida |
| 29. | Big-cheeked Cave Crayfish | Procambarus delicatus | Florida |
| 30. | Boeckella bispinosa | Boeckella bispinosa | Australia |
| 31. | Boeckella calcaris | Boeckella calcaris | Bolivia, Peru |
| 32. | Boeckella geniculata | Boeckella geniculata | Australia |
| 33. | Boeckella nyoraensis | Boeckella nyoraensis | Australia |
| 34. | Boeckella shieli | Boeckella shieli | Australia |
| 35. | Bogidiella bermudensis | Bogidiella bermudensis | Bermuda - North Atlantic Ocean |
| 36. | Bottiella cucutensis | Bottiella cucutensis | Colombia, Venezuela |
| 37. | Bottiella medemi | Bottiella medemi | Colombia, Venezuela |
| 38. | Branchinecta belki | Branchinecta belki | Mexico |
| 39. | Branchinecta mexicana | Branchinecta mexicana | Mexico |
| 40. | Branchinella lithaca | Branchinella lithaca | United States |
| 41. | Branchinella alachua | Branchinella alachua | United States |
| 42. | Branchinella apophysata | Branchinella apophysata | Australia |
| 43. | Branchinella basispina | Branchinella basispina | Australia |
| 44. | Branchinella denticulata | Branchinella denticulata | Australia |
| 45. | Branchinella simplex | Branchinella simplex | Australia |
| 46. | Branchinella wellardi | Branchinella wellardi | Australia |
| 47. | Brawleys Fork Crayfish | Cambarus williami | Tennessee |
| 48. | Burrowing Crayfish | Engaeus australis | Australia |
| 49. | Burrowing Crayfish | Engaeus curvisuturus | Australia |
| 50. | Burrowing Crayfish | Engaeus disjuncticus | Australia |
| 51. | Burrowing Crayfish | Engaeus granulatus | Australia |
| 52. | Burrowing Crayfish | Engaeus mallacoota | Australia |
| 53. | Burrowing Crayfish | Engaeus martigener | Australia |
| 54. | Burrowing Crayfish | Engaeus nulloporius | Australia |
| 55. | Burrowing Crayfish | Engaeus orramakunna | Australia |
| 56. | Burrowing Crayfish | Engaeus rostrogaleatus | Australia |
| 57. | Burrowing Crayfish | Engaeus spinicaudatus | Australia |
| 58. | Burrowing Crayfish | Engaeus sternalis | Australia |
| 59. | Burrowing Crayfish | Engaeus urostrictus | Australia |
| 60. | Burrowing Crayfish | Engaeus phyllocercus | Australia |
| 61. | Calamoecia australica | Calamoecia australica | Australia |
| 62. | Calamoecia elongata | Calamoecia elongata | Australia |
| 63. | Calamoecia zeidleri | Calamoecia zeidleri | Australia |
| 64. | Calconiscellus gotscheensis | Calconiscellus gotscheensis | Slovenia |
| 65. | California Bay Pea Crab | Parapinnixa affinis | California |
| 66. | California Freshwater Shrimp | Syncaris pacifica | California |
| 67. | Cambarus cymatilis | Cambarus cymatilis | Georgia, Tennessee |
| 68. | Cambarus elkensis | Cambarus elkensis | West Virginia |
| 69. | Cambarus strigosus | Cambarus strigosus | Georgia |
| 70. | Cambarus subterraneus | Cambarus subterraneus | Oklahoma |
| 71. | Canthocamptus dedeckkeri | Canthocamptus dedeckkeri | Australia |
| 72. | Canthocamptus echinopyge | Canthocamptus echinopyge | Australia |
| 73. | Canthocamptus longipes | Canthocamptus longipes | Australia |
| 74. | Canthocamptus mammillifurca | Canthocamptus mammillifurca | Australia |
| 75. | Canthocamptus sublaevis | Canthocamptus sublaevis | Australia |
| 76. | Canthocamptus tasmaniae | Canthocamptus tasmaniae | Australia |
| 77. | Central Missouri Cave Amphipod | Allocrangonyx hubrichti | Arkansas, Missouri |
| 78. | Ceylonthelphusa alpina | Ceylonthelphusa alpina | Sri Lanka |
| 79. | Ceylonthelphusa armata | Ceylonthelphusa armata | Sri Lanka |
| 80. | Ceylonthelphusa callista | Ceylonthelphusa callista | Sri Lanka |
| 81. | Ceylonthelphusa cavatrix | Ceylonthelphusa cavatrix | Sri Lanka |
| 82. | Ceylonthelphusa diva | Ceylonthelphusa diva | Sri Lanka |
| 83. | Ceylonthelphusa durrelli | Ceylonthelphusa durrelli | Sri Lanka |
| 84. | Ceylonthelphusa kotagama | Ceylonthelphusa kotagama | Sri Lanka |
| 85. | Ceylonthelphusa nana | Ceylonthelphusa nana | Sri Lanka |
| 86. | Ceylonthelphusa nata | Ceylonthelphusa nata | Sri Lanka |
| 87. | Ceylonthelphusa orthos | Ceylonthelphusa orthos | Sri Lanka |
| 88. | Ceylonthelphusa sanguinea | Ceylonthelphusa sanguinea | Sri Lanka |
| 89. | Ceylonthelphusa savitriae | Ceylonthelphusa savitriae | Sri Lanka |
| 90. | Ceylonthelphusa kandambyi | Ceylonthelphusa kandambyi | Sri Lanka |
| 91. | Ceylonthelphusa venusta | Ceylonthelphusa venusta | Sri Lanka |
| 92. | Chirocephalus croaticus | Chirocephalus croaticus | Croatia, Slovenia |
| 93. | Chirocephalus pelagonicus | Chirocephalus pelagonicus | Republic of Macedonia |
| 94. | Chirocephalus reiseri | Chirocephalus reiseri | Bosnia and Herzegovina |
| 95. | Cirolanid Isopod | Arubolana aruboides | Bermuda - North Atlantic Ocean |
| 96. | Clifton Cave Isopod | Caecidotea barri | Kentucky |
| 97. | Clinothelphusa kakoota | Clinothelphusa kakoota | Sri Lanka |
| 98. | Coahuila Isopod | Mexistenasellus coahuila | Mexico, Texas |
| 99. | Coccusa cristicervix | Coccusa cristicervix | Malaysia (Sarawak) |
| 100. | Cocoharpinia iliffei | Cocoharpinia iliffei | Bermuda - North Atlantic Ocean |
| 101. | Conservancy Fairy Shrimp | Branchinecta conservatio | California |
| 102. | Cuban Cave Shrimp | Barbouria cubensis | Bermuda - North Atlantic Ocean |
| 103. | Curassanthura bermudensis | Curassanthura bermudensis | Bermuda - North Atlantic Ocean |
| 104. | Cypress Crayfish | Cambarellus blacki | Florida |
| 105. | Deckenia imitatrix | Deckenia imitatrix | Kenya, Somalia, Tanzania |
| 106. | Deckenia mitis | Deckenia mitis | Kenya, Tanzania |
| 107. | Distocambarus devexus | Distocambarus devexus | Georgia |
| 108. | Distocambarus youngineri | Distocambarus youngineri | South Carolina |
| 109. | Doimon doichiangdao | Doimon doichiangdao | Thailand |
| 110. | Doimon doisutep | Doimon doisutep | Thailand |
| 111. | Dwarf River Crab | Liberonautes nanoides | Liberia |
| 112. | Elaphoidella amabilis | Elaphoidella amabilis | United States |
| 113. | Elaphoidella franci | Elaphoidella franci | Slovenia |
| 114. | Elaphoidella jeanneli | Elaphoidella jeanneli | Slovenia |
| 115. | Elaphoidella kieferi | Elaphoidella kieferi | Slovenia |
| 116. | Engaewa similis | Engaewa similis | Australia |
| 117. | Eodiaptomus lumholtzi | Eodiaptomus lumholtzi | Australia |
| 118. | Eodiaptomus shihi | Eodiaptomus shihi | India |
| 119. | Epilobocera haytensis | Epilobocera haytensis | Dominican Republic, Haiti |
| 120. | Epilobocera wetherbeei | Epilobocera wetherbeei | Dominican Republic |
| 121. | Erebonectes nesioticus | Erebonectes nesioticus | Bermuda - North Atlantic Ocean |
| 122. | Fibulacamptus bisetosus | Fibulacamptus bisetosus | Australia |
| 123. | Fibulacamptus gracilior | Fibulacamptus gracilior | Australia |
| 124. | Florida Fairy Shrimp | Dexteria floridana | Florida |
| 125. | Geithusa pulchra | Geithusa pulchra | Malaysia |
| 126. | Geothelphusa levicervix | Geothelphusa levicervix | Japan |
| 127. | Giant Freshwater Crayfish | Astacopsis gouldi | Australia |
| 128. | Grandbassa River Crab | Liberonautes grandbassa | Liberia |
| 129. | Green Crab | Geothelphusa lutao | China, Taiwan |
| 130. | Hainanpotamon orientale | Hainanpotamon orientale | China (Hainan) |
| 131. | Haplophthalmus abbreviatus | Haplophthalmus abbreviatus | Slovenia |
| 132. | Haplophthalmus rhinoceros | Haplophthalmus rhinoceros | Croatia, Slovenia |
| 133. | Hatchie Burrowing Crayfish | Fallicambarus hortoni | Tennessee |
| 134. | Hay's Spring Amphipod | Stygobromus hayi | District of Columbia |
| 135. | Heliodiaptomus kolleruensis | Heliodiaptomus kolleruensis | India |
| 136. | Heliodiaptomus pulcher | Heliodiaptomus pulcher | India |
| 137. | Hell Creek Crayfish | Cambarus zophonastes | Arkansas |
| 138. | Hesperodiaptomus augustaensis | Hesperodiaptomus augustaensis | North Carolina |
| 139. | Hesperodiaptomus californiensis | Hesperodiaptomus californiensis | California |
| 140. | Hickman's Pygmy Mountain Shrimp | Allanaspides hickmani | Australia (Tasmania) |
| 141. | Hypolobocera exuca | Hypolobocera exuca | Colombia, Ecuador |
| 142. | Hypolobocera alata | Hypolobocera alata | Colombia |
| 143. | Hypolobocera andagoensis | Hypolobocera andagoensis | Colombia |
| 144. | Hypolobocera barbacensis | Hypolobocera barbacensis | Colombia |
| 145. | Hypolobocera cajambrensis | Hypolobocera cajambrensis | Colombia |
| 146. | Hypolobocera gracilignatha | Hypolobocera gracilignatha | Ecuador, Peru |
| 147. | Hypolobocera rathbuni | Hypolobocera rathbuni | Ecuador |
| 148. | Hypolobocera rotundilobata | Hypolobocera rotundilobata | Colombia |
| 149. | Hypolobocera velezi | Hypolobocera velezi | Colombia |
| 150. | Ibanum pilimanus | Ibanum pilimanus | Malaysia |
| 151. | Idunella sketi | Idunella sketi | Bermuda - North Atlantic Ocean |
| 152. | Illinois Cave Amphipod | Gammarus acherondytes | Illinois |
| 153. | Imnadia banatica | Imnadia banatica | Serbia and Montenegro |
| 154. | Imnadia cristata | Imnadia cristata | Serbia and Montenegro |
| 155. | Imnadia panonica | Imnadia panonica | Serbia and Montenegro |
| 156. | Indochinamon bhumibol | Indochinamon bhumibol | Thailand |
| 157. | Indochinamon villosum | Indochinamon villosum | Laos |
| 158. | Indochinamon cua | Indochinamon cua | Vietnam |
| 159. | Indochinamon guttum | Indochinamon guttum | Laos |
| 160. | Indochinamon mieni | Indochinamon mieni | Vietnam |
| 161. | Ingolfiella longipes | Ingolfiella longipes | Bermuda - North Atlantic Ocean |
| 162. | Iomon nan | Iomon nan | Thailand |
| 163. | Iomon luangprabangensis | Iomon luangprabangensis | Laos |
| 164. | Irmengardia didacta | Irmengardia didacta | Malaysia |
| 165. | Irmengardia nemestrinus | Irmengardia nemestrinus | Indonesia |
| 166. | Irmengardia johnsoni | Irmengardia johnsoni | Singapore |
| 167. | Johora punicea | Johora punicea | Malaysia |
| 168. | Johora singaporensis | Johora singaporensis | Singapore |
| 169. | Johora counsilmani | Johora counsilmani | Malaysia |
| 170. | Johora gapensis | Johora gapensis | Malaysia |
| 171. | Johora johorensis | Johora johorensis | Malaysia |
| 172. | Johora thoi | Johora thoi | Malaysia |
| 173. | Johora tiomanensis | Johora tiomanensis | Malaysia |
| 174. | Kapcypriodopsis barnardi | Kapcypriodopsis barnardi | South Africa (Western Cape Province) |
| 175. | Kauai Cave Amphipod | Spelaeorchestia koloana | Hawaii |
| 176. | Kentucky Cave Shrimp | Palaemonias ganteri | Kentucky |
| 177. | Kiamichi Crayfish | Orconectes saxatilis | Oklahoma |
| 178. | Lee County Cave Isopod | Lirceus usdagalun | Virginia |
| 179. | Lepidothelphusa cognetti | Lepidothelphusa cognetti | Malaysia (Sarawak) |
| 180. | Leucocythere helenae | Leucocythere helenae | South Africa |
| 181. | Lindacatalina sumacensis | Lindacatalina sumacensis | Colombia, Ecuador |
| 182. | Liotelphusa gagei | Liotelphusa gagei | Bhutan, India |
| 183. | Liotelphusa laevis | Liotelphusa laevis | Bhutan, India |
| 184. | Liotelphusa quadrata | Liotelphusa quadrata | India |
| 185. | Lobster Claw Crab | Liberonautes rubigimanus | Guinea, Liberia |
| 186. | Longhorn Fairy Shrimp | Branchinecta longiantenna | California |
| 187. | Lonoke Crayfish | Procambarus ferrugineus | Arkansas |
| 188. | Louisea balssi | Louisea balssi | Cameroon |
| 189. | Louisea edeaensis | Louisea edeaensis | Cameroon |
| 190. | Lovenula excellens | Lovenula excellens | South Africa |
| 191. | Lovenula simplex | Lovenula simplex | South Africa |
| 192. | Lugbe River Crab | Liberonautes lugbe | Liberia |
| 193. | Madison Cave Isopod | Antrolana lira | Virginia, West Virginia |
| 194. | Mahatha helaya | Mahatha helaya | Sri Lanka |
| 195. | Mahatha iora | Mahatha iora | Sri Lanka |
| 196. | Mahatha lacuna | Mahatha lacuna | Sri Lanka |
| 197. | Mahatha regina | Mahatha regina | Sri Lanka |
| 198. | Miami Cave Crayfish | Procambarus milleri | Florida |
| 199. | Mictacean | Mictocaris halope | Bermuda - North Atlantic Ocean |
| 200. | Migmathelphusa olivacea | Migmathelphusa olivacea | Indonesia (Sulawesi) |
| 201. | Miyazaki's Crab | Geothelphusa miyazakii | China, Taiwan |
| 202. | Monolistra bolei | Monolistra bolei | Slovenia |
| 203. | Monolistra spinosissima | Monolistra spinosissima | Slovenia |
| 204. | Nanocopia minuta | Nanocopia minuta | Bermuda - North Atlantic Ocean |
| 205. | Nashville Crayfish | Orconectes shoupi | Tennessee |
| 206. | Nemoron nomas | Nemoron nomas | Vietnam |
| 207. | Nimba Stream Crab | Liberonautes nimba | Guinea, Liberia |
| 208. | Noel's Amphipod | Gammarus desperatus | New Mexico |
| 209. | Nueces Crayfish | Procambarus nueces | Texas |
| 210. | Oconee Burrowing Crayfish | Cambarus truncatus | United States |
| 211. | Okinawan Terrestrial Crab | Geothelphusa tenuimanus | Japan |
| 212. | Oklahoma Cave Amphipod | Allocrangonyx pellucidus | Oklahoma |
| 213. | Oklahoma Cave Crayfish | Cambarus tartarus | Oklahoma |
| 214. | Opossum Shrimp | Bermudamysis speluncola | Bermuda - North Atlantic Ocean |
| 215. | Orange Lake Cave Crayfish | Procambarus franzi | Florida |
| 216. | Orchid Island Crab | Geothelphusa lanyu | China, Taiwan |
| 217. | Orlando Cave Crayfish | Procambarus acherontis | Florida |
| 218. | Ouachita Burrowing Crayfish | Fallicambarus harpi | Arkansas |
| 219. | Oziothelphusa dakuna | Oziothelphusa dakuna | Sri Lanka |
| 220. | Oziothelphusa gallicola | Oziothelphusa gallicola | Sri Lanka |
| 221. | Oziothelphusa intuta | Oziothelphusa intuta | Sri Lanka |
| 222. | Oziothelphusa kodagoda | Oziothelphusa kodagoda | Sri Lanka |
| 223. | Oziothelphusa populosa | Oziothelphusa populosa | Sri Lanka |
| 224. | Panama City Crayfish | Procambarus econfinae | Florida |
| 225. | Paracyclopia naessi | Paracyclopia naessi | Bermuda - North Atlantic Ocean |
| 226. | Paramelita barnardi | Paramelita barnardi | South Africa (Western Cape Province) |
| 227. | Parathelphusa batamensis | Parathelphusa batamensis | Indonesia |
| 228. | Parathelphusa nagasakti | Parathelphusa nagasakti | Malaysia |
| 229. | Parathelphusa reticulata | Parathelphusa reticulata | Singapore |
| 230. | Parkhill Prairie Crayfish | Procambarus steigmani | Texas |
| 231. | Pastilla dacuna | Pastilla dacuna | Sri Lanka |
| 232. | Peck's Cave Amphipod | Stygobromus pecki | Texas |
| 233. | Pennsylvania Cave Amphipod | Crangonyx dearolfi | Maryland, Pennsylvania |
| 234. | Perbrinckia cracens | Perbrinckia cracens | Sri Lanka |
| 235. | Perbrinckia enodis | Perbrinckia enodis | Sri Lanka |
| 236. | Perbrinckia fido | Perbrinckia fido | Sri Lanka |
| 237. | Perbrinckia gabadagei | Perbrinckia gabadagei | Sri Lanka |
| 238. | Perbrinckia glabra | Perbrinckia glabra | Sri Lanka |
| 239. | Perbrinckia morayensis | Perbrinckia morayensis | Sri Lanka |
| 240. | Perbrinckia punctata | Perbrinckia punctata | Sri Lanka |
| 241. | Perbrinckia quadratus | Perbrinckia quadratus | Sri Lanka |
| 242. | Perbrinckia rosae | Perbrinckia rosae | Sri Lanka |
| 243. | Perbrinckia scitula | Perbrinckia scitula | Sri Lanka |
| 244. | Phricotelphusa gracilipes | Phricotelphusa gracilipes | Malaysia |
| 245. | Phricotelphusa hockpingi | Phricotelphusa hockpingi | Malaysia |
| 246. | Piedmont Blue Burrower | Cambarus harti | Georgia |
| 247. | Platyops sterreri | Platyops sterreri | Bermuda - North Atlantic Ocean |
| 248. | Potamonautes gonocristatus | Potamonautes gonocristatus | Democratic Republic of Congo (Zaire), Uganda |
| 249. | Potamonautes idjiwiensis | Potamonautes idjiwiensis | Democratic Republic of Congo (Zaire) |
| 250. | Potamonautes mutandensis | Potamonautes mutandensis | Uganda |
| 251. | Potamonautes platycentron | Potamonautes platycentron | Kenya, Tanzania |
| 252. | Procarid Shrimp | Procaris chacei | Bermuda - North Atlantic Ocean |
| 253. | Purple Marsh Crab | Afrithelphusa monodosa | Guinea |
| 254. | Putnam County Cave Crayfish | Procambarus morrisi | Florida |
| 255. | Red-black Crayfish | Cambarus pyronotus | Florida |
| 256. | Rye Cove Cave Isopod | Lirceus culveri | Virginia |
| 257. | Salangathelphusa anophrys | Salangathelphusa anophrys | Thailand |
| 258. | San Diego Fairy Shrimp | Branchinecta sandiegonensis | California |
| 259. | Sandhills Crayfish | Procambarus angustatus | Georgia |
| 260. | Santa Fe Cave Crayfish | Procambarus erythrops | Florida |
| 261. | Sayamia melanodactylus | Sayamia melanodactylus | Thailand |
| 262. | Seed Shrimp | Limnocythere porphyretica | Australia |
| 263. | Shasta Crayfish | Pacifastacus fortis | California |
| 264. | Siamthelphusa holthuisi | Siamthelphusa holthuisi | Thailand |
| 265. | Silver Glen Springs Cave Crayfish | Procambarus attiguus | Florida |
| 266. | Slenderwrist Burrowing Crayfish | Fallicambarus petilicarpus | Arkansas |
| 267. | Socorro Isopod | Thermosphaeroma thermophilum | New Mexico |
| 268. | Somanniathelphusa zanklon | Somanniathelphusa zanklon | Hong Kong |
| 269. | Somersiella sterreri | Somersiella sterreri | Bahamas, Bermuda - North Atlantic Ocean, Cuba, Mexico |
| 270. | Sooty Crayfish | Pacifastacus nigrescens | California |
| 271. | Spelaeoecia bermudensis | Spelaeoecia bermudensis | Bermuda - North Atlantic Ocean |
| 272. | Speleoithona bermudensis | Speleoithona bermudensis | Bermuda - North Atlantic Ocean |
| 273. | Speleophria bivexilla | Speleophria bivexilla | Bermuda - North Atlantic Ocean |
| 274. | Speleophria scottodicarloi | Speleophria scottodicarloi | Bermuda - North Atlantic Ocean |
| 275. | Speocirolana thermydromis | Speocirolana thermydromis | Mexico |
| 276. | Sphaerolana affinis | Sphaerolana affinis | Mexico |
| 277. | Sphaerolana interstitialis | Sphaerolana interstitialis | Mexico |
| 278. | Spiny Crayfish | Euastacus bindal | Australia |
| 279. | Spiny Crayfish | Euastacus crassus | Australia |
| 280. | Spiny Crayfish | Euastacus diversus | Australia |
| 281. | Spiny Crayfish | Euastacus jagara | Australia |
| 282. | Spiny Crayfish | Euastacus maidae | Australia |
| 283. | Spiny Crayfish | Euastacus monteithorum | Australia |
| 284. | Spiny Crayfish | Euastacus robertsi | Australia |
| 285. | Spiny Crayfish | Euastacus urospinosus | Australia |
| 286. | Spiny Crayfish | Euastacus yigara | Australia |
| 287. | Spiny Crayfish | Euastacus armatus | Australia |
| 288. | Spiny Crayfish | Euastacus bispinosus | Australia |
| 289. | Spiny Crayfish | Euastacus eungella | Australia |
| 290. | Spiny Crayfish | Euastacus fleckeri | Australia |
| 291. | Spiny Crayfish | Euastacus hystricosus | Australia |
| 292. | Spiny Crayfish | Euastacus neodiversus | Australia |
| 293. | Spiny Crayfish | Euastacus setosus | Australia |
| 294. | Spiralothelphusa fernandoi | Spiralothelphusa fernandoi | Sri Lanka |
| 295. | Spiralothelphusa parvula | Spiralothelphusa parvula | Sri Lanka |
| 296. | Stoliczia chaseni | Stoliczia chaseni | Malaysia |
| 297. | Strengeriana antioquensis | Strengeriana antioquensis | Colombia |
| 298. | Streptocephalus woottoni | Streptocephalus woottoni | California |
| 299. | Streptocephalus moorei | Streptocephalus moorei | Mexico |
| 300. | Streptocephalus dendrophorus | Streptocephalus dendrophorus | South Africa |
| 301. | Streptocephalus dendyi | Streptocephalus dendyi | South Africa |
| 302. | Streptocephalus gracilis | Streptocephalus gracilis | South Africa |
| 303. | Streptocephalus guzmani | Streptocephalus guzmani | Mexico |
| 304. | Streptocephalus zuluensis | Streptocephalus zuluensis | South Africa, Zimbabwe |
| 305. | Sundathelphusa sottoae | Sundathelphusa sottoae | Philippines |
| 306. | Syncarid Shrimp | Allanaspides helonomus | Australia (Tasmania) |
| 307. | Taiwan Waist Crab | Somanniathelphusa taiwanensis | China, Taiwan |
| 308. | Tehuana lamothei | Tehuana lamothei | Mexican Holarctic |
| 309. | Tehuana poglayenorum | Tehuana poglayenorum | Mexican Holarctic |
| 310. | Tehuana veracruzana | Tehuana veracruzana | Mexican Holarctic |
| 311. | Terrathelphusa kuchingensis | Terrathelphusa kuchingensis | Malaysia |
| 312. | Thaksinthelphusa yongchindaratae | Thaksinthelphusa yongchindaratae | Thailand |
| 313. | Thermosphaeroma cavicauda | Thermosphaeroma cavicauda | Mexico |
| 314. | Thermosphaeroma dugesi | Thermosphaeroma dugesi | Mexico |
| 315. | Thermosphaeroma macrura | Thermosphaeroma macrura | Mexico |
| 316. | Thermosphaeroma milleri | Thermosphaeroma milleri | Mexico |
| 317. | Thermosphaeroma smithi | Thermosphaeroma smithi | Mexico |
| 318. | Tree Hole Crab | Globonautes macropus | Guinea, Liberia |
| 319. | Trichodactylus crassus | Trichodactylus crassus | Brazil |
| 320. | Typhlopseudothelphusa mocinoi | Typhlopseudothelphusa mocinoi | Mexico |
| 321. | Valley Flame Crayfish | Cambarus deweesae | Kentucky, Tennessee |
| 322. | Vernal Pool Tadpole Shrimp | Lepidurus packardi | California |
| 323. | Water Flea | Daphnia coronata | South Africa |
| 324. | Water Flea | Daphnia jollyi | Australia |
| 325. | Water Flea | Daphnia nivalis | Australia |
| 326. | Water Flea | Daphnia occidentalis | Australia |
| 327. | Yangmingshan Crab | Geothelphusa yangminshan | China, Taiwan |
