Belgium

Black-naped Oriole

Oriolus chinensis

Black Neb

Monochroa lutulentella

Black-patch Piercer

Pammene ochsenheimeriana

black pea

Lathyrus niger

Argentine Cocklebur

Xanthium ambrosioides

Argentine needlegrass

Nassella tenuissima

Argentine pepperweed

Lepidium bonariense

Argent & Sable

Rheumaptera hastata

Argid Sawfly

Arge ochropus

Arisaig Crisp-moss

Tortella flavovirens

Armenian crane's-bill

Geranium psilostemon

Aromatic Knight

Tricholoma lascivum

Aromatic Pinkgill

Entoloma pleopodium

Arrhenia griseopallida

Arrhenia lobata

Arrow-Grass

Triglochin maritima

arrow-head scale

Unaspis yanonensis

Arrowleaf clover

Trifolium vesiculosum

Athelopsis lembospora

Atlantic Giant Pumpkin

Cucurbita maxima

Atlantic Ninebark

Physocarpus opulifolius

Atlantic rangia

Rangia cuneata

Atlantic Sea Gooseberry

Pleurobrachia pileus

Atlantic Surf Clam

Spisula solidissima

Atlas Poppy

Papaver atlanticum

Aubretia

Aubrieta deltoidea

August Cosmet

Sorhagenia rhamniella

August Flower

Scorzoneroides autumnalis

august thorn

Ennomos quercinaria

Asa Gray'S Sedge

Carex grayi

a Sand Martin flea

Ceratophyllus styx

Ascochyta syringae

Ascocoryne cylichnium

Ascotremella faginea

Ash-bark Piercer

Pammene suspectana

ash-black slug

Limax cinereoniger

Ashen Coral

Tremellodendropsis tuberosa

Ash whitefly

Siphoninus phillyreae

Ashy Cinquefoil

Potentilla inclinata

Ashy Furrow Bee

Lasioglossum sexnotatum

Ashy Mining Bee

Andrena cineraria

Ashy Willow

Salix cinerea

Asian Ambrosia Beetle

Xyleborinus attenuatus

Asian Bittersweet

Celastrus orbiculatus

Asian China-mark

Elophila difflualis

Asian Hornet

Vespa velutina

Asian Longhorned Beetle

Anoplophora glabripennis

Asian Skunk-cabbage

Lysichiton camtschatcensis

Asian wavy bittercress

Cardamine occulta

Asiatic Dayflower

Commelina communis

Asparagus Rust

Puccinia asparagi

Aspen Clearwing

Eusphecia melanocephala

Aspen Lappet

Phyllodesma tremulifolia

Aspen Pigmy

Stigmella assimilella

Aster leafminer

Calycomyza humeralis

Astrantia

Astrantia major

Athelia subovata

Asian brush crab

Hemigrapsus takanoi

Asian Bush Mosquito

Aedes japonicus

Asian chestnut gall wasp

Dryocosmus kuriphilus