- Medaeus elegans — likely to require a low level of donation
- Medaeus grandis — likely to require a low level of donation
- Medaeus granulatus — likely to require a low level of donation
- Medaeus mbalavuensis — likely to require a low level of donation
- Medaeus ornatus — likely to require a low level of donation
- Medaeus variabilis — likely to require a low level of donation
- Mediapotamon angustipedum — likely to require an intermediate donation
- Mediapotamon leishanense — likely to require an intermediate donation
- Medicorophium aculeatum — likely to require a low level of donation
- Medicorophium affine — likely to require a low level of donation
- Medicorophium annulatum — likely to require a low level of donation
- Medicorophium longisetosum — likely to require a low level of donation
- Medicorophium minimum — likely to require a low level of donation
- Medicorophium rotundirostre — likely to require a low level of donation
- Medicorophium runcicorne — likely to require a low level of donation
- Medigidiella antennata — likely to require a low level of donation
- Medigidiella aquatica — likely to require a low level of donation
- Medigidiella arista — likely to require a low level of donation
- Medigidiella chappuisi — likely to require a low level of donation
- Medigidiella dalmatina — likely to require a low level of donation
- Medigidiella hebraea — likely to require a low level of donation
- Medigidiella minotaurus — likely to require a low level of donation
- Medigidiella paolii — likely to require a low level of donation
- Medigidiella paraichnusae — likely to require a low level of donation
- Medigidiella uncinata — likely to require a low level of donation
- Mediophrixus pinuum — likely to require a low level of donation
- Mediterexis macho — likely to require a low level of donation
- Mediterexis mimonectes — likely to require a low level of donation
- Medorippe ampla — likely to require a low level of donation
- Medorippe crosnieri — likely to require a low level of donation
- Medorippe lanata — likely to require a low level of donation
- Medorippe tanabei — likely to require a low level of donation
- Megacephalomon kittikooni — likely to require an intermediate donation
- Megacepon choprai — likely to require a low level of donation
- Megacepon disparatum — likely to require a low level of donation
- Megacepon goetici — likely to require a low level of donation
- Megacepon pleopodatopus — likely to require a low level of donation
- Megacepon pleopodatus — likely to require a low level of donation
- Megacepon sesarmae — likely to require a low level of donation
- Megacepon sheni — likely to require a low level of donation
- Megaceradocus baffini — likely to require a low level of donation
- Megaceradocus gigas — likely to require a low level of donation
- Megaesthesius migmus — likely to require a low level of donation
- Megaesthesius sagedae — likely to require a low level of donation
- Megaesthesius westralia — likely to require a low level of donation
- Megaesthesius yokoyai — likely to require a low level of donation
- Megagidiella azul — likely to require a low level of donation
- Megalanceola stephenseni — likely to require a low level of donation
- Megalanceoloides aequanime — likely to require a low level of donation
- Megalanceoloides remipes — likely to require a low level of donation
- Megalobrachium erosum — likely to require a low level of donation
- Megalobrachium festae — likely to require a low level of donation
- Megalobrachium festai — likely to require a low level of donation
- Megalobrachium garthi — likely to require a low level of donation
- Megalobrachium lemaitrei — likely to require a low level of donation
- Megalobrachium mortenseni — likely to require a low level of donation
- Megalobrachium pacificum — likely to require a low level of donation
- Megalobrachium peruvianum — likely to require a low level of donation
- Megalobrachium poeyi — likely to require a low level of donation
- Megalobrachium roseum — likely to require a low level of donation
- Megalobrachium sinuimanus — likely to require a low level of donation
- Megalobrachium smithi — likely to require a low level of donation
- Megalobrachium soriatum — likely to require a low level of donation
- Megalobrachium tuberculipes — likely to require a low level of donation
- Megalopsis denticauda — likely to require a low level of donation
- Megalorchestia benedicti — likely to require a low level of donation
- Megalorchestia californiana — likely to require a low level of donation
- Megalorchestia columbiana — likely to require a low level of donation
- Megalorchestia corniculata — likely to require a low level of donation
- Megalorchestia dexterae — likely to require a low level of donation
- Megalorchestia minor — likely to require a low level of donation
- Megalorchestia pugettensis — likely to require a low level of donation
- Megaluropus agilis — likely to require a low level of donation
- Megaluropus aqabaensis — likely to require a low level of donation
- Megaluropus excavatus — likely to require a low level of donation
- Megaluropus massiliensis — likely to require a low level of donation
- Megaluropus monasteriensis — likely to require a low level of donation
- Megaluropus mysersi — likely to require a low level of donation
- Megaluropus namaquaeensis — likely to require a low level of donation
- Megametope carinatus — likely to require a low level of donation
- Megametope ogaensis — likely to require a low level of donation
- Megametope punctatus — likely to require a low level of donation
- Megametope rotundifrons — likely to require a low level of donation
- Megamoera borealis — likely to require a low level of donation
- Megamoera bowmani — likely to require a low level of donation
- Megamoera dentata — likely to require a low level of donation
- Megamoera falsomikulitschae — likely to require a low level of donation
- Megamoera glacialis — likely to require a low level of donation
- Megamoera kodiakensis — likely to require a low level of donation
- Megamoera lignophila — likely to require a low level of donation
- Megamoera mikulitschae — likely to require a low level of donation
- Megamoera multidentata — likely to require a low level of donation
- Megamoera pallida — likely to require a low level of donation
- Megamoera rafiae — likely to require a low level of donation
- Megamoera similidentata — likely to require a low level of donation
- Megamoera striata — likely to require a low level of donation
- Megamoera subtener — likely to require a low level of donation
- Megamoera unimaki — likely to require a low level of donation
- Megamphopus angustilobatus — likely to require a low level of donation
- Megamphopus blaisus — likely to require a low level of donation
- Megamphopus brevidactylus — likely to require a low level of donation
- Megamphopus cornutus — likely to require a low level of donation
- Megamphopus ctenurus — likely to require a low level of donation
- Megamphopus dimorpha — likely to require a low level of donation
- Megamphopus elephantis — likely to require a low level of donation
- Megamphopus geogianus — likely to require a low level of donation
- Megamphopus hainanensis — likely to require a low level of donation
- Megamphopus katagani — likely to require a low level of donation
- Megamphopus kergueleni — likely to require a low level of donation
- Megamphopus lapsii — likely to require a low level of donation
- Megamphopus longicornis — likely to require a low level of donation
- Megamphopus longicornus — likely to require a low level of donation
- Megamphopus longidactyla — likely to require a low level of donation
- Megamphopus mamola — likely to require a low level of donation
- Megamphopus pachypa — likely to require a low level of donation
- Megamphopus palmatus — likely to require a low level of donation
- Megamphopus raptor — likely to require a low level of donation
- Megamphopus robustisetae — likely to require a low level of donation
- Megamphopus trigonurus — likely to require a low level of donation
- Meganyctiphanes norvegica — likely to require an intermediate donation
- Megapleonum ehuangzhang — likely to require an intermediate donation
- Megokris akademik — likely to require a low level of donation
- Megokris ghamrawyi — likely to require a low level of donation
- Megokris gonospinifer — likely to require a low level of donation
- Megokris granulosus — likely to require a low level of donation
- Megokris halli — likely to require a low level of donation
- Megokris manihine — likely to require a low level of donation
- Megokris motohburiorum — likely to require a low level of donation
- Megokris pescadoreensis — likely to require a low level of donation
- Megokris sedili — likely to require a low level of donation
- Meierythrops pacificus — likely to require a low level of donation
- Meierythrops parvispinis — likely to require a low level of donation
- Meiosquilla dawsoni — likely to require an intermediate donation
- Meiosquilla lebouri — likely to require an intermediate donation
- Meiosquilla quadridens — likely to require an intermediate donation
- Meiosquilla randalli — likely to require an intermediate donation
- Meiosquilla schmitti — likely to require an intermediate donation
- Meiosquilla swetti — likely to require an intermediate donation
- Meiosquilla tricarinata — likely to require an intermediate donation
- Mekhongthelphusa brandti — likely to require an intermediate donation
- Mekhongthelphusa kengsaphu — likely to require an intermediate donation
- Mekhongthelphusa neisi — likely to require an intermediate donation
- Mekhongthelphusa tetragona — likely to require an intermediate donation
- Mekon solidomala — likely to require a low level of donation
- Melita alaskensis — likely to require a low level of donation
- Melita alluaudi — likely to require a low level of donation
- Melita almagosa — likely to require a low level of donation
- Melita anmyeonensis — likely to require a low level of donation
- Melita awa — likely to require a low level of donation
- Melita bingoensis — likely to require a low level of donation
- Melita bousfieldi — likely to require a low level of donation
- Melita bulla — likely to require a low level of donation
- Melita californica — likely to require a low level of donation
- Melita celericula — likely to require a low level of donation
- Melita choshigawaensis — likely to require a low level of donation
- Melita cognata — likely to require a low level of donation
- Melita coroninii — likely to require a low level of donation
- Melita corticis — likely to require a low level of donation
- Melita davilae — likely to require a low level of donation
- Melita dentata — likely to require a low level of donation
- Melita donghaiensis — likely to require a low level of donation
- Melita dulcicola — likely to require a low level of donation
- Melita elongata — likely to require a low level of donation
- Melita festiva — likely to require a low level of donation
- Melita gayi — likely to require a low level of donation
- Melita guanaense — likely to require a low level of donation
- Melita hainanensis — likely to require a low level of donation
- Melita hergensis — likely to require a low level of donation
- Melita hoshinoi — likely to require a low level of donation
- Melita inaequistylis — likely to require a low level of donation
- Melita intermedia — likely to require a low level of donation
- Melita kauerti — likely to require a low level of donation
- Melita koreana — likely to require a low level of donation
- Melita laevidorsum — likely to require a low level of donation
- Melita lagunae — likely to require a low level of donation
- Melita latiflagella — likely to require a low level of donation
- Melita leiotelson — likely to require a low level of donation
- Melita leonis — likely to require a low level of donation
- Melita lignophila — likely to require a low level of donation
- Melita longidactyla — likely to require a low level of donation
- Melita longisetosa — likely to require a low level of donation
- Melita machaera — likely to require a low level of donation
- Melita mangrovi — likely to require a low level of donation
- Melita mirzajanii — likely to require a low level of donation
- Melita myersi — likely to require a low level of donation
- Melita nagatai — likely to require a low level of donation
- Melita nitida — likely to require a low level of donation
- Melita nitidaformis — likely to require a low level of donation
- Melita nitidula — likely to require a low level of donation
- Melita oba — likely to require a low level of donation
- Melita obtusa — likely to require a low level of donation
- Melita ophiocola — likely to require a low level of donation
- Melita oregonensis — likely to require a low level of donation
- Melita orgasmos — likely to require a low level of donation
- Melita pahuwai — likely to require a low level of donation
- Melita pallida — likely to require a low level of donation
- Melita palmata — likely to require a low level of donation
- Melita parvimana — likely to require a low level of donation
- Melita persona — likely to require a low level of donation
- Melita pilopropoda — likely to require a low level of donation
- Melita planaterga — likely to require a low level of donation
- Melita plumulosa — likely to require a low level of donation
- Melita proxima — likely to require a low level of donation
- Melita quadridentata — likely to require a low level of donation
- Melita reidi — likely to require a low level of donation
- Melita richardi — likely to require a low level of donation
- Melita ruffoi — likely to require a low level of donation
- Melita rylovae — likely to require a low level of donation
- Melita sampsonae — likely to require a low level of donation
- Melita setiflagella — likely to require a low level of donation
- Melita setimera — likely to require a low level of donation
- Melita shimizui — likely to require a low level of donation
- Melita simplex — likely to require a low level of donation
- Melita solada — likely to require a low level of donation
- Melita stocki — likely to require a low level of donation
- Melita sulca — likely to require a low level of donation
- Melita tristanensis — likely to require a low level of donation
- Melita tuberculata — likely to require a low level of donation
- Melita valesi — likely to require a low level of donation
- Melita virgula — likely to require a low level of donation
- Melita vulcanella — likely to require a low level of donation
- Melita zeylanica — likely to require a low level of donation
- Melitoides kawaii — likely to require a low level of donation
- Melitoides makarovi — likely to require a low level of donation
- Melitoides valida — likely to require a low level of donation
- Melocarcinus meekei — likely to require a low level of donation
- Melothelphusa apiaka — likely to require an intermediate donation
- Melphidippa amorita — likely to require a low level of donation
- Melphidippa antarctica — likely to require a low level of donation
- Melphidippa borealis — likely to require a low level of donation
- Melphidippa globosa — likely to require a low level of donation
- Melphidippa goesi — likely to require a low level of donation
- Melphidippa linea — likely to require a low level of donation
- Melphidippa macra — likely to require a low level of donation
- Melphidippa macrura — likely to require a low level of donation
- Melphidippa macruroides — likely to require a low level of donation
- Melphidippa serrata — likely to require a low level of donation
- Melphidippa serrulatus — likely to require a low level of donation
- Melphidippa sinuata — likely to require a low level of donation
- Melphidippa willemiana — likely to require a low level of donation
- Melphidippella macra — likely to require a low level of donation
- Melphisana bola — likely to require a low level of donation
- Melphisana japonica — likely to require a low level of donation
- Melphisana madagascarensis — likely to require a low level of donation
- Melphisubchela prehenda — likely to require a low level of donation
- Melphisubchela subprehenda — likely to require a low level of donation
- Melybia thalamita — likely to require a low level of donation
- Memana sarda — likely to require a low level of donation
- Membrilopus kensleyi — likely to require a low level of donation
- Membrilopus membrisetatus — likely to require a low level of donation
- Menaethiops abumusa — likely to require an intermediate donation
- Menaethiops acutifrons — likely to require an intermediate donation
- Menaethiops bicornis — likely to require an intermediate donation
- Menaethiops brevicornis — likely to require an intermediate donation
- Menaethiops contiguicornis — likely to require an intermediate donation
- Menaethiops delagoae — likely to require an intermediate donation
- Menaethiops dubius — likely to require an intermediate donation
- Menaethiops fascicularis — likely to require an intermediate donation
- Menaethiops gadaniensis — likely to require an intermediate donation
- Menaethiops moebii — likely to require an intermediate donation
- Menaethiops natalensis — likely to require an intermediate donation
- Menaethiops ninii — likely to require an intermediate donation
- Menaethiops nodulosus — likely to require an intermediate donation
- Menaethiops okai — likely to require an intermediate donation
- Menaethiops portoricensis — likely to require an intermediate donation
- Menaethiops xiphias — likely to require an intermediate donation
- Menaethius monoceros — likely to require a low level of donation
- Menaethius orientalis — likely to require a low level of donation
- Mendamanus ailurostoma — likely to require a low level of donation
- Menigrates angustipes — likely to require a low level of donation
- Menigrates maslovi — likely to require a low level of donation
- Menigrates obtusifrons — likely to require a low level of donation
- Menigrates spinirami — likely to require a low level of donation
- Menigratopsis svennilssoni — likely to require a low level of donation
- Meningadora mollis — likely to require a low level of donation
- Meningodora compsa — likely to require a low level of donation
- Meningodora longisulca — likely to require a low level of donation
- Meningodora marptocheles — likely to require a low level of donation
- Meningodora miccyla — likely to require a low level of donation
- Meningodora mollis — likely to require a low level of donation
- Meningodora vesca — likely to require a low level of donation
- Menippe adina — likely to require a low level of donation
- Menippe anomala — likely to require a low level of donation
- Menippe brevimanus — likely to require a low level of donation
- Menippe burnsi — likely to require a low level of donation
- Menippe cretacea — likely to require a low level of donation
- Menippe floridana — likely to require a low level of donation
- Menippe frescoensis — likely to require a low level of donation
- Menippe frontalis — likely to require a low level of donation
- Menippe hirtipes — likely to require a low level of donation
- Menippe jacksonensis — likely to require a low level of donation
- Menippe jakesonensis — likely to require a low level of donation
- Menippe mercenaria — likely to require a low level of donation
- Menippe nodifrons — likely to require a low level of donation
- Menippe obtusa — likely to require a low level of donation
- Menippe oceanica — likely to require a low level of donation
- Menippe rumphii — likely to require a low level of donation
- Menoplax longispinosa — likely to require a low level of donation
- Meractaea brucei — likely to require a low level of donation
- Meractaea multidentata — likely to require a low level of donation
- Meractaea tafai — likely to require a low level of donation
- Meractaea takunan — likely to require a low level of donation
- Meraldia birgeri — likely to require a low level of donation
- Meraldia madeleinae — likely to require a low level of donation
- Meraldia meraldi — likely to require a low level of donation
- Meraldia yorki — likely to require a low level of donation
- Merguia oligodon — likely to require a low level of donation
- Merguia rhizophorae — likely to require a low level of donation
- Merhippolyte agulhasensis — likely to require a low level of donation
- Merhippolyte americana — likely to require a low level of donation
- Merhippolyte ancistrota — likely to require a low level of donation
- Merhippolyte calmani — likely to require a low level of donation
- Merhippolyte chacei — likely to require a low level of donation
- Merhippolyte kauaiensis — likely to require a low level of donation
- Merhippolyte peroni — likely to require a low level of donation
- Meridiobathynella rouchi — likely to require a low level of donation
- Meridiolembos acherontis — likely to require a low level of donation
- Meridiolembos hippocrenes — likely to require a low level of donation
- Meridiolembos pertinax — likely to require a low level of donation
- Meridiosignum disparitergum — likely to require a low level of donation
- Meridiosignum kerguelensis — likely to require a low level of donation
- Meridiosignum menziesi — likely to require a low level of donation
- Meridiosignum minidenticulatum — likely to require a low level of donation
- Meridiosignum undulatum — likely to require a low level of donation
- Meriola barrosi — likely to require a low level of donation
- Meriola californica — likely to require a low level of donation
- Meriola corallina — likely to require a low level of donation
- Meriola decepta — likely to require a low level of donation
- Merocryptoides frontalis — likely to require an intermediate donation
- Merocryptoides ohtsukai — likely to require an intermediate donation
- Merocryptoides peteri — likely to require an intermediate donation
- Merocryptus altavillensis — likely to require an intermediate donation
- Merocryptus boletifer — likely to require an intermediate donation
- Merocryptus boletisculpta — likely to require an intermediate donation
- Merocryptus lambriformis — likely to require an intermediate donation
- Merocryptus obsoletus — likely to require an intermediate donation
- Meromonakantha anarsios — likely to require a low level of donation
- Meromonakantha gilrowei — likely to require a low level of donation
- Meromonakantha irregularis — likely to require a low level of donation
- Meromonakantha macrocephala — likely to require a low level of donation
- Meromonakantha mauri — likely to require a low level of donation
- Meromonakantha natatoris — likely to require a low level of donation
- Meromonakantha nutae — likely to require a low level of donation
- Meromonakantha setosa — likely to require a low level of donation
- Merozoon vestigatum — likely to require a low level of donation
- Mertonia integra — likely to require an intermediate donation
- Mertonia lanka — likely to require an intermediate donation
- Merulana bicarinata — likely to require an intermediate donation
- Merulana boydensis — likely to require an intermediate donation
- Merulana canaliculata — likely to require an intermediate donation
- Merulana chathamensis — likely to require an intermediate donation
- Merulana exilis — likely to require an intermediate donation
- Merulana helmsiana — likely to require an intermediate donation
- Merulana hispida — likely to require an intermediate donation
- Merulana impressifrons — likely to require an intermediate donation
- Merulana iniqua — likely to require an intermediate donation
- Merulana noduligera — likely to require an intermediate donation
- Merulana rugosa — likely to require an intermediate donation
- Merulana translucida — likely to require an intermediate donation
- Merulanella bicolorata — likely to require an intermediate donation
- Merulanella carinata — likely to require an intermediate donation
- Merulanella dollfusi — likely to require an intermediate donation
- Merulanella gibbera — likely to require an intermediate donation
- Merulanella latissima — likely to require an intermediate donation
- Merulanella peltata — likely to require an intermediate donation
- Merulanella wahrbergi — likely to require an intermediate donation
- Mesacanthomysis pygmaea — likely to require a low level of donation
- Mesacanthotelson decipiens — likely to require a low level of donation
- Mesacanthotelson fallax — likely to require a low level of donation
- Mesacanthotelson setosus — likely to require a low level of donation
- Mesacanthotelson tasmaniae — likely to require a low level of donation
- Mesacturoides brevisquamatus — likely to require an intermediate donation
- Mesacturoides crinitus — likely to require an intermediate donation
- Mesacturoides fimbriatus — likely to require an intermediate donation
- Mesacturus dicrurus — likely to require an intermediate donation
- Mesacturus furcicaudatus — likely to require an intermediate donation
- Mesacturus kempi — likely to require an intermediate donation
- Mesamphisopus abbreviatus — likely to require a low level of donation
- Mesamphisopus albidus — likely to require a low level of donation
- Mesamphisopus baccatus — likely to require a low level of donation
- Mesamphisopus capensis — likely to require a low level of donation
- Mesamphisopus depressus — likely to require a low level of donation
- Mesamphisopus kensleyi — likely to require a low level of donation
- Mesamphisopus paludosus — likely to require a low level of donation
- Mesamphisopus penicillatus — likely to require a low level of donation
- Mesamphisopus setosus — likely to require a low level of donation
- Mesamphisopus tsitsikamma — likely to require a low level of donation
- Mesanthura adrianae — likely to require a low level of donation
- Mesanthura affinis — likely to require a low level of donation
- Mesanthura albinotata — likely to require a low level of donation
- Mesanthura albolineata — likely to require a low level of donation
- Mesanthura asiatica — likely to require a low level of donation
- Mesanthura astelia — likely to require a low level of donation
- Mesanthura atrata — likely to require a low level of donation
- Mesanthura bermudensis — likely to require a low level of donation
- Mesanthura bipunctata — likely to require a low level of donation
- Mesanthura bivittata — likely to require a low level of donation
- Mesanthura brasiliensis — likely to require a low level of donation
- Mesanthura callicera — likely to require a low level of donation
- Mesanthura catenula — likely to require a low level of donation
- Mesanthura cinctula — likely to require a low level of donation
- Mesanthura crucis — likely to require a low level of donation
- Mesanthura decorata — likely to require a low level of donation
- Mesanthura dianella — likely to require a low level of donation
- Mesanthura excelsa — likely to require a low level of donation
- Mesanthura fasciata — likely to require a low level of donation
- Mesanthura floridensis — likely to require a low level of donation
- Mesanthura frances — likely to require a low level of donation
- Mesanthura gerlachi — likely to require a low level of donation
- Mesanthura hieroglyphica — likely to require a low level of donation
- Mesanthura hopkinsi — likely to require a low level of donation
- Mesanthura javensis — likely to require a low level of donation
- Mesanthura kiliani — likely to require a low level of donation
- Mesanthura libertia — likely to require a low level of donation
- Mesanthura looensis — likely to require a low level of donation
- Mesanthura miersi — likely to require a low level of donation
- Mesanthura miyakoensis — likely to require a low level of donation
- Mesanthura moroea — likely to require a low level of donation
- Mesanthura nigra — likely to require a low level of donation
- Mesanthura nigrodorsalis — likely to require a low level of donation
- Mesanthura nubifera — likely to require a low level of donation
- Mesanthura occidentalis — likely to require a low level of donation
- Mesanthura ocellata — likely to require a low level of donation
- Mesanthura pacoi — likely to require a low level of donation
- Mesanthura pascuaensis — likely to require a low level of donation
- Mesanthura paucidens — likely to require a low level of donation
- Mesanthura protei — likely to require a low level of donation
- Mesanthura pulchra — likely to require a low level of donation
- Mesanthura punctillata — likely to require a low level of donation
- Mesanthura quadrata — likely to require a low level of donation
- Mesanthura reticulata — likely to require a low level of donation
- Mesanthura romulea — likely to require a low level of donation
- Mesanthura spongicola — likely to require a low level of donation
- Mesanthura stypandra — likely to require a low level of donation
- Mesarmadillo albescens — likely to require an intermediate donation
- Mesarmadillo albicornis — likely to require an intermediate donation
- Mesarmadillo arambourgi — likely to require an intermediate donation
- Mesarmadillo buddelundi — likely to require an intermediate donation
- Mesarmadillo chappuisi — likely to require an intermediate donation
- Mesarmadillo eubeloides — likely to require an intermediate donation
- Mesarmadillo flavescens — likely to require an intermediate donation
- Mesarmadillo flavimarginatus — likely to require an intermediate donation
- Mesarmadillo ghanensis — likely to require an intermediate donation
- Mesarmadillo giganteus — likely to require an intermediate donation
- Mesarmadillo gracilipennis — likely to require an intermediate donation
- Mesarmadillo hastatus — likely to require an intermediate donation
- Mesarmadillo kivuensis — likely to require an intermediate donation
- Mesarmadillo marginatus — likely to require an intermediate donation
- Mesarmadillo montanus — likely to require an intermediate donation
- Mesarmadillo pfaui — likely to require an intermediate donation
- Mesarmadillo quadricoloratus — likely to require an intermediate donation
- Mesarmadillo quadrimaculatus — likely to require an intermediate donation
- Mesarmadillo similis — likely to require an intermediate donation
- Mesarmadillo tuberculatus — likely to require an intermediate donation
- Mesarmadillo variegatus — likely to require an intermediate donation
- Mesidotea entomon — likely to require an intermediate donation
- Mesoasellus dybowskii — likely to require a low level of donation
- Mesocepon tosizimensis — likely to require a low level of donation
- Mesochthongidiella tucumanensis — likely to require a low level of donation
- Mesocrangon intermedia — likely to require a low level of donation
- Mesocrangon munitella — likely to require a low level of donation
- Mesocrangon volki — likely to require a low level of donation
- Mesocyclocaris gracilis — likely to require a low level of donation
- Mesocyphocaris longicaudatus — likely to require a low level of donation
- Mesodillo eremitus — likely to require an intermediate donation
- Mesogammarus melitoides — likely to require a low level of donation
- Mesokalliapseudes bahamensis — likely to require a low level of donation
- Mesokalliapseudes brasiliensis — likely to require a low level of donation
- Mesokalliapseudes crassus — likely to require a low level of donation
- Mesokalliapseudes macsweenyi — likely to require a low level of donation
- Mesokalliapseudes quadriflagellata — likely to require a low level of donation
- Mesokalliapseudes soniadawnae — likely to require a low level of donation
- Mesokalliapseudes thalasispeleus — likely to require a low level of donation
- Mesokalliapseudes viridis — likely to require a low level of donation
- Mesolamprops abyssalis — likely to require a low level of donation
- Mesolamprops bacescui — likely to require a low level of donation
- Mesolamprops bispinosus — likely to require a low level of donation
- Mesolamprops denticulatus — likely to require a low level of donation
- Mesolamprops dillonensis — likely to require a low level of donation
- Mesolamprops hartleyi — likely to require a low level of donation
- Mesolamprops japonicus — likely to require a low level of donation
- Mesometopa esmarki — likely to require a low level of donation
- Mesometopa extensa — likely to require a low level of donation
- Mesometopa gibbosa — likely to require a low level of donation
- Mesometopa neglecta — likely to require a low level of donation
- Mesometopa sinuata — likely to require a low level of donation
- Mesomysis aberrans — likely to require a low level of donation
- Mesoniscus alpicola — likely to require an intermediate donation
- Mesoniscus graniger — likely to require an intermediate donation
- Mesopenaeus brucei — likely to require a low level of donation
- Mesopenaeus mariae — likely to require a low level of donation
- Mesopenaeus tropicalis — likely to require a low level of donation
- Mesophoxus laperusi — likely to require a low level of donation
- Mesophryxus ventralis — likely to require a low level of donation
- Mesopleustes abyssorum — likely to require a low level of donation
- Mesopontonia brevicarpus — likely to require a low level of donation
- Mesopontonia brucei — likely to require a low level of donation
- Mesopontonia gorgoniophila — likely to require a low level of donation
- Mesopontonia gracilicarpus — likely to require a low level of donation
- Mesopontonia monodactylus — likely to require a low level of donation