Megachile perihirta
Megachilidae > Hymenoptera > Insecta
Megachile pugnata
Megachilidae > Hymenoptera > Insecta
Megachile relativa
Megachilidae > Hymenoptera > Insecta
Megachile rotundata
alfalfa leafcutting bee — Megachilidae > Hymenoptera > Insecta
Megachile subexilis
Megachilidae
Megalopta amoena
Halictidae > Hymenoptera > Insecta
Megalopta genalis
Halictidae
Megarcys
stoneflies —
Megascapheus bottae
pocket gopher — Geomyidae > Rodentia > Mammalia
Melaleuca quinquenervia
Myrtaceae > Myrtales > Magnoliopsida
Melanoplus bivittatus
grasshopper — Acrididae > Orthoptera > Insecta
Meleagris gallopavo
wild turkey —
Melica spectabilis
Melipona
Apidae > Hymenoptera > Insecta
Melipona colimana
Melipona quadrifasciata
Apidae > Hymenoptera > Insecta
Melipona scutellaris
Apidae > Hymenoptera > Insecta
Melipona subnitida
Melitaea cinxia
Nymphalidae
Meloidogyne incognita
Meridion
Fragilariaceae > Fragilariales > Bacillariophyceae
Mertensia alpina
Boraginaceae > Boraginales > Magnoliopsida
Mertensia franciscana
Boraginaceae
Mertensia ovata
Boraginaceae
Mertensia paniculata
Boraginaceae > Boraginales > Magnoliopsida
Metacnephia jeanae
Simuliidae > Diptera > Insecta
Metopeurum fuscoviride
Metopolophium festucae cerealium
Aphidae
Metrosideros polymorpha
Metschnikowia reukaufii
Microcebus murinus
grey mouse lemurs — Cheirogaleidae > Primates > Mammalia
Microtus californicus
California voles —
Microtus ochrogaster
prairie vole — Cricetidae > Rodentia > Mammalia
Millerella
Mimosa pigra
Mimulus
monkeyflowers — Phrymaceae > Lamiales > Magnoliopsida
Mimulus eastwoodiae
Phrymaceae > Lamiales > Magnoliopsida
Mimulus guttatus
monkey flower — Phrymaceae > Lamiales > Magnoliopsida
Mimulus lewisii
Phrymaceae > Lamiales > Magnoliopsida
Molothrus ater
Brown-headed Cowbird — Icteridae > Passeriformes > Aves
Mougotia
Moussonia deppeana
Gesneriaceae > Lamiales > Magnoliopsida
Mus musculus
mice — Muridae > Rodentia > Mammalia
Mus musculus domesticus
house mice — Muridae > Rodentia > Mammalia
Musca domestica
house fly — Muscidae > Diptera > Insecta
Mustela erminea
short-tailed weasel — Mustelidae > Carnivora > Mammalia
Mycoplasma
Mycoplasmataceae > Mycoplasmatales
Myodes
Cricetidae > Rodentia > Mammalia
Myodes gapperi
red-backed vole — Cricetidae > Rodentia > Mammalia
Myotis lucifugus
little brown bats — Vespertilionidae > Chiroptera > Mammalia