- Odontozona libertae — likely to require a low level of donation
- Odontozona lopheliae — likely to require a low level of donation
- Odontozona meloi — likely to require a low level of donation
- Odontozona minoica — likely to require a low level of donation
- Odontozona okunoi — likely to require a low level of donation
- Odontozona rubra — likely to require a low level of donation
- Odontozona sculpticaudata — likely to require a low level of donation
- Odontozona spinosissima — likely to require a low level of donation
- Odontozona spongicola — likely to require a low level of donation
- Odontozona stigmatica — likely to require a low level of donation
- Odontozona striata — likely to require a low level of donation
- Odysseylana sakijang — likely to require a low level of donation
- Odysseylana setosa — likely to require a low level of donation
- Odysseylana sirenkoi — likely to require a low level of donation
- Odysseylana temasek — likely to require a low level of donation
- Oecidiobranchus glacialis — likely to require a low level of donation
- Oecidiobranchus nanseni — likely to require a low level of donation
- Oecidiobranchus nowrae — likely to require a low level of donation
- Oecidiobranchus plebejum — likely to require a low level of donation
- Oecidiobranchus polare — likely to require a low level of donation
- Oedicerina denticulata — likely to require a low level of donation
- Oedicerina ingolfi — likely to require a low level of donation
- Oedicerina loerzae — likely to require a low level of donation
- Oedicerina megalopoda — likely to require a low level of donation
- Oedicerina vaderi — likely to require a low level of donation
- Oediceroides abyssorum — likely to require a low level of donation
- Oediceroides antennatus — likely to require a low level of donation
- Oediceroides apicalis — likely to require a low level of donation
- Oediceroides calmani — likely to require a low level of donation
- Oediceroides cinderella — likely to require a low level of donation
- Oediceroides emarginatus — likely to require a low level of donation
- Oediceroides lahillei — likely to require a low level of donation
- Oediceroides limpieza — likely to require a low level of donation
- Oediceroides littoralis — likely to require a low level of donation
- Oediceroides macrodactyla — likely to require a low level of donation
- Oediceroides microcarpa — likely to require a low level of donation
- Oediceroides morose — likely to require a low level of donation
- Oediceroides newnesi — likely to require a low level of donation
- Oediceroides ornata — likely to require a low level of donation
- Oediceroides pilosa — likely to require a low level of donation
- Oediceroides plumicornis — likely to require a low level of donation
- Oediceroides proxima — likely to require a low level of donation
- Oediceroides rostrata — likely to require a low level of donation
- Oediceroides similis — likely to require a low level of donation
- Oediceroides trepadora — likely to require a low level of donation
- Oediceroides weberi — likely to require a low level of donation
- Oediceroides wolffi — likely to require a low level of donation
- Oediceroides zanzibarica — likely to require a low level of donation
- Oediceropsis bicornuta — likely to require a low level of donation
- Oediceropsis brevicornis — likely to require a low level of donation
- Oediceropsis elsula — likely to require a low level of donation
- Oediceropsis proxima — likely to require a low level of donation
- Oediceros arcticus — likely to require a low level of donation
- Oediceros borealis — likely to require a low level of donation
- Oediceros brevicalcar — likely to require a low level of donation
- Oediceros minor — likely to require a low level of donation
- Oediceros moigni — likely to require a low level of donation
- Oediceros newnesi — likely to require a low level of donation
- Oediceros parvimanus — likely to require a low level of donation
- Oediceros saginatus — likely to require a low level of donation
- Oedignathus inermis — likely to require a low level of donation
- Oediplax granulata — likely to require a low level of donation
- Oedothelphusa orientalis — likely to require an intermediate donation
- Ogleus pilarae — likely to require a low level of donation
- Ogyrides alphaerostris — likely to require a low level of donation
- Ogyrides delli — likely to require a low level of donation
- Ogyrides hayi — likely to require a low level of donation
- Ogyrides mjoebergi — likely to require a low level of donation
- Ogyrides nr. alphaerostris HDBG-2012 — likely to require a low level of donation
- Ogyrides occidentalis — likely to require a low level of donation
- Ogyrides orientalis — likely to require a low level of donation
- Ogyrides rarispina — likely to require a low level of donation
- Ogyrides saldanhae — likely to require a low level of donation
- Ogyrides sibogae — likely to require a low level of donation
- Ogyrides straticauda — likely to require a low level of donation
- Ogyrides striaticauda — likely to require a low level of donation
- Ogyrides tarazonai — likely to require a low level of donation
- Ogyrides wickstenae — likely to require a low level of donation
- Ogyridione caroliniana — likely to require a low level of donation
- Okeaninoscia oliveri — likely to require an intermediate donation
- Olencira lamarckii — likely to require a low level of donation
- Olencira praegustator — likely to require a low level of donation
- Olenorfia cariei — likely to require a low level of donation
- Olenothus uogi — likely to require a low level of donation
- Olibrinus aestuari — likely to require an intermediate donation
- Olibrinus antennatus — likely to require an intermediate donation
- Olibrinus elongatus — likely to require an intermediate donation
- Olibrinus hachijoensis — likely to require an intermediate donation
- Olibrinus kosugei — likely to require an intermediate donation
- Olibrinus kushimotoensis — likely to require an intermediate donation
- Olibrinus miyakensis — likely to require an intermediate donation
- Olibrinus nomurai — likely to require an intermediate donation
- Olibrinus ormaraensis — likely to require an intermediate donation
- Olibrinus pacificus — likely to require an intermediate donation
- Olibrinus tomiokaensis — likely to require an intermediate donation
- Olibrinus tosaensis — likely to require an intermediate donation
- Olibrinus truncatus — likely to require an intermediate donation
- Oligochinus lighti — likely to require a low level of donation
- Olokun puellamaritima — likely to require a low level of donation
- Omalacantha antillensis — likely to require a low level of donation
- Omalacantha bicornuta — likely to require a low level of donation
- Omalacantha garthi — likely to require a low level of donation
- Omalacantha interrupta — likely to require a low level of donation
- Omangidiella parvidactyla — likely to require a low level of donation
- Omanodillo gardneri — likely to require an intermediate donation
- Ombrastacoides asperrimanus — likely to require a low level of donation
- Ombrastacoides brevirostris — likely to require a low level of donation
- Ombrastacoides decemdentatus — likely to require a low level of donation
- Ombrastacoides denisoni — likely to require a low level of donation
- Ombrastacoides dissitus — likely to require a low level of donation
- Ombrastacoides huonensis — likely to require a low level of donation
- Ombrastacoides ingressus — likely to require a low level of donation
- Ombrastacoides leptomerus — likely to require a low level of donation
- Ombrastacoides parvicaudatus — likely to require a low level of donation
- Ombrastacoides professorum — likely to require a low level of donation
- Ombrastacoides pulcher — likely to require a low level of donation
- Ommatocarcinus corioensis — likely to require a low level of donation
- Ommatocarcinus fibiophthalmus — likely to require a low level of donation
- Ommatocarcinus fibriophthalmus — likely to require a low level of donation
- Ommatocarcinus granulatus — likely to require a low level of donation
- Ommatocarcinus macgillivrayi — likely to require a low level of donation
- Ommatocarcinus pulcher — likely to require a low level of donation
- Ommatocarcinus sankuei — likely to require a low level of donation
- Ommatocarcinus taiwanicus — likely to require a low level of donation
- Ommatocarcinus zariquieyi — likely to require a low level of donation
- Ommatogammarus albinus — likely to require a low level of donation
- Ommatoleucon megalopos — likely to require a low level of donation
- Ommatoleucon ocularis — likely to require a low level of donation
- Omonana brachycephala — likely to require a low level of donation
- Omonana parasimplex — likely to require a low level of donation
- Omonana serraticoxa — likely to require a low level of donation
- Omonana simplex — likely to require a low level of donation
- Onchotelson brevicaudatus — likely to require a low level of donation
- Onchotelson spatulatus — likely to require a low level of donation
- Oncilorpheus jerrybarnardi — likely to require a low level of donation
- Oncilorpheus stebbingi — likely to require a low level of donation
- Oncinopus angustifrons — likely to require an intermediate donation
- Oncinopus araneus — likely to require an intermediate donation
- Oncinopus kathae — likely to require an intermediate donation
- Oncinopus neptunus — likely to require an intermediate donation
- Oncinopus postillonensis — likely to require an intermediate donation
- Oncinopus subpellucidus — likely to require an intermediate donation
- Onconida alaini — likely to require a low level of donation
- Onconida ariel — likely to require a low level of donation
- Onconida gemini — likely to require a low level of donation
- Onconida modica — likely to require a low level of donation
- Onconida prostrata — likely to require a low level of donation
- Onconida tropis — likely to require a low level of donation
- Oncopagurus africanus — likely to require a low level of donation
- Oncopagurus bicristatus — likely to require a low level of donation
- Oncopagurus bifidus — likely to require a low level of donation
- Oncopagurus brevis — likely to require a low level of donation
- Oncopagurus cidaris — likely to require a low level of donation
- Oncopagurus conicus — likely to require a low level of donation
- Oncopagurus crusoei — likely to require a low level of donation
- Oncopagurus curvispina — likely to require a low level of donation
- Oncopagurus elevatus — likely to require a low level of donation
- Oncopagurus elongatus — likely to require a low level of donation
- Oncopagurus glebosus — likely to require a low level of donation
- Oncopagurus gracilis — likely to require a low level of donation
- Oncopagurus haigae — likely to require a low level of donation
- Oncopagurus indicus — likely to require a low level of donation
- Oncopagurus minutus — likely to require a low level of donation
- Oncopagurus mironovi — likely to require a low level of donation
- Oncopagurus monstrosus — likely to require a low level of donation
- Oncopagurus oimos — likely to require a low level of donation
- Oncopagurus orientalis — likely to require a low level of donation
- Oncopagurus petilus — likely to require a low level of donation
- Oncopagurus pollicis — likely to require a low level of donation
- Oncopagurus rossanae — likely to require a low level of donation
- Oncopagurus spiniartus — likely to require a low level of donation
- Oncopagurus stockmani — likely to require a low level of donation
- Oncopagurus tuamotu — likely to require a low level of donation
- Onesimoides abyssalis — likely to require a low level of donation
- Onesimoides carinatus — likely to require a low level of donation
- Onesimoides castellatus — likely to require a low level of donation
- Onesimoides cavimanus — likely to require a low level of donation
- Onesimoides chelatus — likely to require a low level of donation
- Onesimoides mediterraneus — likely to require a low level of donation
- Onesimoides mindoro — likely to require a low level of donation
- Onesimoides nosybeensis — likely to require a low level of donation
- Onesimoides sandroi — likely to require a low level of donation
- Oniscophiloscia anomala — likely to require an intermediate donation
- Oniscophiloscia kuscheli — likely to require an intermediate donation
- Oniscophiloscia mirifica — likely to require an intermediate donation
- Oniscus ancarensis — likely to require an intermediate donation
- Oniscus asellus — likely to require an intermediate donation
- Oniscus brevicaudatus — likely to require an intermediate donation
- Oniscus caricus — likely to require an intermediate donation
- Oniscus conglobator — likely to require an intermediate donation
- Oniscus cookii — likely to require an intermediate donation
- Oniscus galicianus — likely to require an intermediate donation
- Oniscus gammarellus — likely to require an intermediate donation
- Oniscus lusitanus — likely to require an intermediate donation
- Oniscus marinus — likely to require an intermediate donation
- Oniscus occidentalis — likely to require an intermediate donation
- Oniscus pustulatus — likely to require an intermediate donation
- Oniscus simoni — likely to require an intermediate donation
- Oniscus variegatus — likely to require an intermediate donation
- Onisimus abyssi — likely to require a low level of donation
- Onisimus affinis — likely to require a low level of donation
- Onisimus barentsi — likely to require a low level of donation
- Onisimus birulai — likely to require a low level of donation
- Onisimus botkini — likely to require a low level of donation
- Onisimus brevicaudatus — likely to require a low level of donation
- Onisimus caricus — likely to require a low level of donation
- Onisimus caspius — likely to require a low level of donation
- Onisimus derjugini — likely to require a low level of donation
- Onisimus edwardsii — likely to require a low level of donation
- Onisimus glacialis — likely to require a low level of donation
- Onisimus leucopis — likely to require a low level of donation
- Onisimus litoralis — likely to require a low level of donation
- Onisimus nanseni — likely to require a low level of donation
- Onisimus normani — likely to require a low level of donation
- Onisimus platyceras — likely to require a low level of donation
- Onisimus plautus — likely to require a low level of donation
- Onisimus punctatus — likely to require a low level of donation
- Onisimus sextonae — likely to require a low level of donation
- Onisimus sibiricus — likely to require a low level of donation
- Onisimus simus — likely to require a low level of donation
- Onisimus turgidus — likely to require a low level of donation
- Onisimus uschakovi — likely to require a low level of donation
- Onisimus zenkevitchi — likely to require a low level of donation
- Onisocryptus kurilensis — likely to require a low level of donation
- Onisocryptus ovalis — likely to require a low level of donation
- Onisocryptus sagittus — likely to require a low level of donation
- Onkokepon articulatus — likely to require a low level of donation
- Onkokepon beibuensis — likely to require a low level of donation
- Onychatrium entale — likely to require a low level of donation
- Onychatrium forceps — likely to require a low level of donation
- Onychatrium thomasi — likely to require a low level of donation
- Onychatrium torosus — likely to require a low level of donation
- Onychobathynella bifurcata — likely to require a low level of donation
- Onychocepon giardi — likely to require a low level of donation
- Onychocepon harpax — likely to require a low level of donation
- Onychocepon resupinum — likely to require a low level of donation
- Onychogammarus araneolus — likely to require a low level of donation
- Onychogammarus crassimanus — likely to require a low level of donation
- Onychogammarus curvirostris — likely to require a low level of donation
- Onychogammarus dorogostajskii — likely to require a low level of donation
- Onychogammarus ephippiatus — likely to require a low level of donation
- Onychogammarus erinaceus — likely to require a low level of donation
- Onychogammarus longipes — likely to require a low level of donation
- Onychogammarus megonychoides — likely to require a low level of donation
- Onychogammarus megonychus — likely to require a low level of donation
- Onychogammarus perpolitus — likely to require a low level of donation
- Onychogammarus pictoides — likely to require a low level of donation
- Onychogammarus pygoacanthus — likely to require a low level of donation
- Onychogammarus quinquefasciatus — likely to require a low level of donation
- Onychogammarus rectirostris — likely to require a low level of donation
- Onychomorpha lamelligera — likely to require an intermediate donation
- Onychomysis mingrelica — likely to require a low level of donation
- Onycocaridella australis — likely to require a low level of donation
- Onycocaridella monodoa — likely to require a low level of donation
- Onycocaridella prima — likely to require a low level of donation
- Onycocaridella stenolepis — likely to require a low level of donation
- Onycocaridites anomodactylus — likely to require a low level of donation
- Onycocaris amakusensis — likely to require a low level of donation
- Onycocaris aualitica — likely to require a low level of donation
- Onycocaris balssi — likely to require a low level of donation
- Onycocaris bocki — likely to require a low level of donation
- Onycocaris callyspongiae — likely to require a low level of donation
- Onycocaris fujinoi — likely to require a low level of donation
- Onycocaris furculata — likely to require a low level of donation
- Onycocaris hayamaensis — likely to require a low level of donation
- Onycocaris longirostris — likely to require a low level of donation
- Onycocaris maui — likely to require a low level of donation
- Onycocaris nieli — likely to require a low level of donation
- Onycocaris oligodentata — likely to require a low level of donation
- Onycocaris profunda — likely to require a low level of donation
- Onycocaris pusillus — likely to require a low level of donation
- Onycocaris quadratophthalma — likely to require a low level of donation
- Onycocaris rudolfi — likely to require a low level of donation
- Onycocaris seychellensis — likely to require a low level of donation
- Onycocaris spinosa — likely to require a low level of donation
- Onycocaris stradbrokei — likely to require a low level of donation
- Onycocaris temiri — likely to require a low level of donation
- Onycocaris trullata — likely to require a low level of donation
- Onycocaris zanzibarica — likely to require a low level of donation
- Onycocaris zarenkovi — likely to require a low level of donation
- Onycomenes antokha — likely to require a low level of donation
- Opaepele loihi — likely to require a low level of donation
- Opaepele susannae — likely to require a low level of donation
- Opecarcinus aurantius — likely to require a low level of donation
- Opecarcinus cathyae — likely to require a low level of donation
- Opecarcinus crescentus — likely to require a low level of donation
- Opecarcinus granulatus — likely to require a low level of donation
- Opecarcinus hypostegus — likely to require a low level of donation
- Opecarcinus lobifrons — likely to require a low level of donation
- Opecarcinus peliops — likely to require a low level of donation
- Opecarcinus pholeter — likely to require a low level of donation
- Opecarcinus sierra — likely to require a low level of donation
- Opisa eschrichtii — likely to require a low level of donation
- Opisa odontochela — likely to require a low level of donation
- Opisa takafuminakanoi — likely to require a low level of donation
- Opisa tridentata — likely to require a low level of donation
- Opisthopus transversus — likely to require a low level of donation
- Oplophorus gracilirostris — likely to require a low level of donation
- Oplophorus grimaldii — likely to require a low level of donation
- Oplophorus marcki — likely to require a low level of donation
- Oplophorus novaezeelandiae — likely to require a low level of donation
- Oplophorus rosselli — likely to require a low level of donation
- Oplophorus spinosus — likely to require a low level of donation
- Oplophorus syriacus — likely to require a low level of donation
- Oplophorus typus — likely to require a low level of donation
- Oplopisa spinipes — likely to require an intermediate donation
- Opusia indica — likely to require a low level of donation
- Oradarea acuminata — likely to require a low level of donation
- Oradarea bidentata — likely to require a low level of donation
- Oradarea crenelata — likely to require a low level of donation
- Oradarea crenulata — likely to require a low level of donation
- Oradarea dawa — likely to require a low level of donation
- Oradarea edentata — likely to require a low level of donation
- Oradarea impressicauda — likely to require a low level of donation
- Oradarea longimana — likely to require a low level of donation
- Oradarea megalops — likely to require a low level of donation
- Oradarea novaezealandiae — likely to require a low level of donation
- Oradarea ocellata — likely to require a low level of donation
- Oradarea rossi — likely to require a low level of donation
- Oradarea shoemakeri — likely to require a low level of donation
- Oradarea surera — likely to require a low level of donation
- Oradarea tricarinata — likely to require a low level of donation
- Oradarea tridentata — likely to require a low level of donation
- Oradarea unidentata — likely to require a low level of donation
- Oradarea walkeri — likely to require a low level of donation
- Oratosquilla fabricii — likely to require an intermediate donation
- Oratosquilla herrei — likely to require an intermediate donation
- Oratosquilla jakartaensis — likely to require an intermediate donation
- Oratosquilla kempi — likely to require an intermediate donation
- Oratosquilla mauritiania — likely to require an intermediate donation
- Oratosquilla oratoria — likely to require an intermediate donation
- Oratosquilla similis — likely to require an intermediate donation
- Oratosquillina anomala — likely to require an intermediate donation
- Oratosquillina asiatica — likely to require an intermediate donation
- Oratosquillina berentsae — likely to require an intermediate donation
- Oratosquillina gravieri — likely to require an intermediate donation
- Oratosquillina inornata — likely to require an intermediate donation
- Oratosquillina interrupta — likely to require an intermediate donation
- Oratosquillina manningi — likely to require an intermediate donation
- Oratosquillina microps — likely to require an intermediate donation
- Oratosquillina nordica — likely to require an intermediate donation
- Oratosquillina pentadactyla — likely to require an intermediate donation
- Oratosquillina perpensa — likely to require an intermediate donation
- Oratosquillina quinquedentata — likely to require an intermediate donation
- Oratosquillina stephensoni — likely to require an intermediate donation
- Orbimorphus constrictus — likely to require a low level of donation
- Orbione angusta — likely to require a low level of donation
- Orbione aristei — likely to require a low level of donation
- Orbione bonnieri — likely to require a low level of donation
- Orbione digitata — likely to require a low level of donation
- Orbione halipori — likely to require a low level of donation
- Orbione izuensis — likely to require a low level of donation
- Orbione penei — likely to require a low level of donation
- Orbione thielemanni — likely to require a low level of donation
- Orchestia aestuarensis — likely to require a low level of donation
- Orchestia antillensis — likely to require a low level of donation
- Orchestia aparicioi — likely to require a low level of donation
- Orchestia aucklandiae — likely to require a low level of donation
- Orchestia bottae — likely to require a low level of donation
- Orchestia ditmari — likely to require a low level of donation
- Orchestia florisana — likely to require a low level of donation
- Orchestia gambierensis — likely to require a low level of donation
- Orchestia gammarellus — likely to require a low level of donation
- Orchestia ghigii — likely to require a low level of donation
- Orchestia grillus — likely to require a low level of donation
- Orchestia guernei — likely to require a low level of donation
- Orchestia insculpta — likely to require a low level of donation
- Orchestia kaalensis — likely to require a low level of donation
- Orchestia magnifica — likely to require a low level of donation
- Orchestia marquesana — likely to require a low level of donation
- Orchestia martensu — likely to require a low level of donation
- Orchestia mediterranea — likely to require a low level of donation
- Orchestia montagui — likely to require a low level of donation
- Orchestia montana — likely to require a low level of donation
- Orchestia ochotensis — likely to require a low level of donation
- Orchestia ponapensis — likely to require a low level of donation
- Orchestia scutigerula — likely to require a low level of donation
- Orchestia selkirki — likely to require a low level of donation
- Orchestia stephenseni — likely to require a low level of donation
- Orchestia sulensoni — likely to require a low level of donation
- Orchestia traskiana — likely to require a low level of donation
- Orchestia tropica — likely to require a low level of donation
- Orchestia uruguayensis — likely to require a low level of donation
- Orchestia venezuelae — likely to require a low level of donation
- Orchestia xylino — likely to require a low level of donation
- Orchestiella neambulans — likely to require a low level of donation
- Orchestiella quasimodo — likely to require a low level of donation
- Orchestigidiella orchestipes — likely to require a low level of donation
- Orchestoidea inexpectata — likely to require a low level of donation
- Orchestoidea tuberculata — likely to require a low level of donation
- Orchomene amblyops — likely to require a low level of donation
- Orchomene anaguela — likely to require a low level of donation
- Orchomene anaquelus — likely to require a low level of donation
- Orchomene batei — likely to require a low level of donation
- Orchomene breviceps — likely to require a low level of donation
- Orchomene commensalis — likely to require a low level of donation
- Orchomene crispatus — likely to require a low level of donation
- Orchomene depressa — likely to require a low level of donation
- Orchomene diamesus — likely to require a low level of donation
- Orchomene dicipiens — likely to require a low level of donation
- Orchomene faeroensis — likely to require a low level of donation
- Orchomene glabrus — likely to require a low level of donation
- Orchomene grimaldii — likely to require a low level of donation
- Orchomene gurjanovae — likely to require a low level of donation
- Orchomene humilis — likely to require a low level of donation
- Orchomene intermedia — likely to require a low level of donation
- Orchomene japonica — likely to require a low level of donation
- Orchomene kaikoi — likely to require a low level of donation
- Orchomene laevipes — likely to require a low level of donation
- Orchomene limodes — likely to require a low level of donation
- Orchomene liomargo — likely to require a low level of donation
- Orchomene macroserratus — likely to require a low level of donation
- Orchomene massiliensis — likely to require a low level of donation
- Orchomene melanophthalmus — likely to require a low level of donation
- Orchomene minor — likely to require a low level of donation
- Orchomene montanus — likely to require a low level of donation
- Orchomene nugax — likely to require a low level of donation
- Orchomene oxystoma — likely to require a low level of donation
- Orchomene pacifica — likely to require a low level of donation
- Orchomene pectinatus — likely to require a low level of donation
- Orchomene pinguis — likely to require a low level of donation
- Orchomene pinquis — likely to require a low level of donation
- Orchomene plicatus — likely to require a low level of donation
- Orchomene proximus — likely to require a low level of donation
- Orchomene serratus — likely to require a low level of donation
- Orchomene sibirjakovi — likely to require a low level of donation
- Orchomene similis — likely to require a low level of donation
- Orchomene stocki — likely to require a low level of donation
- Orchomene thorii — likely to require a low level of donation
- Orchomene triangulus — likely to require a low level of donation
- Orchomene tschernyschevi — likely to require a low level of donation
- Orchomenella aahu — likely to require a low level of donation
- Orchomenella acanthurus — likely to require a low level of donation
- Orchomenella cavimanus — likely to require a low level of donation
- Orchomenella chelipes — likely to require a low level of donation
- Orchomenella chilensis — likely to require a low level of donation
- Orchomenella decipiens — likely to require a low level of donation
- Orchomenella denticulata — likely to require a low level of donation
- Orchomenella franklini — likely to require a low level of donation
- Orchomenella goniops — likely to require a low level of donation
- Orchomenella guillei — likely to require a low level of donation
- Orchomenella hiata — likely to require a low level of donation
- Orchomenella holmesi — likely to require a low level of donation
- Orchomenella hureaui — likely to require a low level of donation
- Orchomenella infinita — likely to require a low level of donation
- Orchomenella japonica — likely to require a low level of donation
- Orchomenella kryptopinguides — likely to require a low level of donation
- Orchomenella lepidula — likely to require a low level of donation
- Orchomenella littoralis — likely to require a low level of donation
- Orchomenella lobata — likely to require a low level of donation
- Orchomenella macrophthalma — likely to require a low level of donation
- Orchomenella minuta — likely to require a low level of donation
- Orchomenella norvegica — likely to require a low level of donation
- Orchomenella obtusa — likely to require a low level of donation
- Orchomenella pacifica — likely to require a low level of donation
- Orchomenella paucisetigera — likely to require a low level of donation
- Orchomenella perdido — likely to require a low level of donation
- Orchomenella pinguides — likely to require a low level of donation
- Orchomenella pinguis — likely to require a low level of donation
- Orchomenella rotundifrons — likely to require a low level of donation
- Orchomenella rugosa — likely to require a low level of donation
- Orchomenella tabasco — likely to require a low level of donation
- Orchomenella thomasi — likely to require a low level of donation
- Orchomenella ultima — likely to require a low level of donation
- Orchomenella zschaui — likely to require a low level of donation
- Orchomenyx macronyx — likely to require a low level of donation
- Orchomenyx schellenbergi — likely to require a low level of donation
- Orchomenyx tabarini — likely to require a low level of donation
- Orconectes acares — likely to require a low level of donation
- Orconectes alabamensis — likely to require a low level of donation
- Orconectes australis — likely to require a low level of donation
- Orconectes barrenensis — likely to require a low level of donation
- Orconectes barri — likely to require a low level of donation
- Orconectes blacki — likely to require a low level of donation
- Orconectes compressus — likely to require a low level of donation
- Orconectes difficilis — likely to require a low level of donation
- Orconectes forceps — likely to require a low level of donation
- Orconectes harrisoni — likely to require a low level of donation
- Orconectes hylas — likely to require a low level of donation
- Orconectes immunis — likely to require a low level of donation
- Orconectes incomptus — likely to require a low level of donation
- Orconectes inermis — likely to require a low level of donation
- Orconectes jeffersoni — likely to require a low level of donation
- Orconectes juvenilis — likely to require a low level of donation
- Orconectes kinderhookensis — likely to require a low level of donation
- Orconectes limosus — likely to require a low level of donation
- Orconectes longidigitus — likely to require a low level of donation
- Orconectes luteus — likely to require a low level of donation
- Orconectes macrus — likely to require a low level of donation
- Orconectes maletae — likely to require a low level of donation
- Orconectes medius — likely to require a low level of donation
- Orconectes menae — likely to require a low level of donation
- Orconectes mirus — likely to require a low level of donation
- Orconectes mississippiensis — likely to require a low level of donation
- Orconectes nais — likely to require a low level of donation
- Orconectes neglectus — likely to require a low level of donation
- Orconectes obscurus — likely to require a low level of donation
- Orconectes ozarkae — likely to require a low level of donation
- Orconectes packardi — likely to require a low level of donation
- Orconectes pagei — likely to require a low level of donation