United States

Aphid

Cinara confinis

Aphid parasite

Aphidius ervi

Aphid Trap

Proboscidea louisianica

Aphroditeola olida

Appalaches Appalachian Speckled Shield Lichen

Punctelia appalachensis

Appalachian Barren Strawberry

Geum fragarioides

Appalachian Polypody

Polypodium appalachianum

Appalachian Quillwort

Isoetes engelmannii

Appalachian Shield Lichen

Parmelia neodiscordans

Appalachian Tea

Ilex glabra

Appalachian Tree Camouflage Lichen

Melanohalea halei

Apple

Malus domestica

Apple blossom

Cassia javanica

Apple Canker

Neonectria ditissima

Apple leaf midge

Dasineura mali

Apple Leaf Skeletoniser

Choreutis pariana

Apple Mint

Mentha suaveolens

Apple Of Peru

Nicandra physalodes

Apple Pith Moth

Blastodacna atra

Apple sucker

Cacopsylla mali

Apricot Club

Clavulinopsis luteoalba

aquarium medusa

Cladonema radiatum

Aquatic oligochaete worm

Paranais frici

Aquatic oligochaete worm

Spirosperma ferox

Aquatic oligochaete worm

Propappus volki

Aquatic Pygmyweed

Crassula aquatica

Arabian pea

Bituminaria bituminosa

Arabian schismus

Schismus arabicus

Arborescent pricklypear

Opuntia leucotricha

Arborvitae Leafminer

Argyresthia thuiella

Arched Earthstar

Geastrum fornicatum

Arched Woodwax

Hygrophorus camarophyllus

Arctic-alpine Pea Clam

Euglesa conventus

Arctic Bentgrass

Agrostis mertensii

Arctic Burreed

Sparganium natans

Arctic Butterbur

Petasites frigidus

Arctic Fingernailclam

Sphaerium nitidum

Arctic Forestfly

Nemoura arctica

Arctic Grayling

Oeneis bore

Arctic Kidney Lichen

Nephroma arcticum

Arctic Mushroom Scales Lichen

Lichenomphalia hudsoniana

Arctic poppy

Papaver nudicaule

Arctic Rocktripe Lichen

Umbilicaria arctica

Arctic Rush

Juncus arcticus

Arctic Saxifrage

Saxifraga hyperborea

Arctic Stag'S-Horn Clubmoss

Lycopodium lagopus

arctic threadwort

Cephaloziella varians

Arctic Wheatgrass

Elymus violaceus

Arcyria insignis

Arcyria stipata

Arcyria versicolor

Arethusa

Arethusa bulbosa

Argentina Vervain

Verbena bonariensis

Argentine ant

Linepithema humile

Australian brake

Pteris tremula

Australian Bur-grass

Tragus australianus

Australian fingergrass

Chloris truncata

Australian Goosefoot

Dysphania pumilio

Australian lovegrass

Eragrostis leptostachya

Australian Pine

Pinus nigra