| abelmoschus | Yes | | | plants | genus | 183218 | click here |
| abelmoschus esculentus | Yes | species | eukaryota | plants | species | 455045 | click here |
| abelmoschus moschatus | Yes | species | | | species | 1170222 | click here |
| abies alba | Yes | species | eukaryota | plants | species | 45372 | click here |
| abies concolor | Yes | species | eukaryota | plants | species | 97173 | click here |
| abies sibirica | Yes | species | eukaryota | plants | species | 97169 | click here |
| abrothrix longipilis | Yes | species | eukaryota | rodents | species | 29094 | click here |
| abrothrix olivaceus | Yes | species | eukaryota | rodents | species | 29098 | click here |
| acalypha indica | Yes | species | | | species | 478095 | click here |
| acalypha wilkesiana | Yes | species | eukaryota | plants | species | 217498 | click here |
| acari | Yes | | | invertebrates | subclass | 6933 | click here |
| accipiter gentilis | Yes | species | eukaryota | vertebrates | species | 8957 | click here |
| accipiter nisus | Yes | species | eukaryota | vertebrates | species | 211598 | click here |
| acer | Yes | | | plants | genus | 4022 | click here |
| acer campestre | Yes | species | eukaryota | plants | species | 66205 | click here |
| acer monspessulanum | Yes | species | eukaryota | plants | species | 168566 | click here |
| acer palmatum | Yes | species | eukaryota | plants | species | 66201 | click here |
| acer platanoides | Yes | species | eukaryota | plants | species | 4025 | click here |
| acinonyx jubatus | Yes | species | eukaryota | mammals | species | 32536 | click here |
| acomys dimidiatus | Yes | species | eukaryota | rodents | species | 60744 | click here |
| acomys spinosissimus | Yes | species | eukaryota | rodents | species | 60747 | click here |
| acrocephalus arundinaceus | Yes | species | eukaryota | vertebrates | species | 39621 | click here |
| acrocephalus schoenobaenus | Yes | species | eukaryota | vertebrates | species | 52609 | click here |
| acrocephalus scirpaceus | Yes | species | eukaryota | vertebrates | species | 48156 | click here |
| acrocomia intumescens | Yes | species | | | species | 1609287 | click here |
| actinidia deliciosa | Yes | species | eukaryota | plants | species | 3627 | click here |
| actitis hypoleucos | Yes | species | eukaryota | vertebrates | species | 320702 | click here |
| adenium obesum | Yes | species | eukaryota | plants | species | 69375 | click here |
| aegilops cylindrica | Yes | species | eukaryota | plants | species | 130456 | click here |
| aegithalos caudatus | Yes | species | eukaryota | vertebrates | species | 73327 | click here |
| aepyceros melampus | Yes | species | eukaryota | mammals | species | 9897 | click here |
| aesculus hippocastanum | Yes | species | eukaryota | plants | species | 43364 | click here |
| agave potrerana | Yes | species | | | species | 1679400 | click here |
| agelaius phoeniceus | Yes | species | eukaryota | vertebrates | species | 39638 | click here |
| ageratum conyzoides | Yes | species | eukaryota | plants | species | 68299 | click here |
| agrilus planipennis | Yes | species | eukaryota | invertebrates | species | 224129 | click here |
| ailuropoda melanoleuca | Yes | species | eukaryota | mammals | species | 9646 | click here |
| ailurus fulgens | Yes | species | eukaryota | mammals | species | 9649 | click here |
| aix sponsa | Yes | species | eukaryota | vertebrates | species | 8833 | click here |
| akodon dolores | Yes | species | eukaryota | rodents | species | 240584 | click here |
| akodon montensis | Yes | species | eukaryota | rodents | species | 106112 | click here |
| akodon paranaensis | Yes | species | eukaryota | rodents | species | 230113 | click here |
| alauda arvensis | Yes | species | eukaryota | vertebrates | species | 88112 | click here |
| alcedo atthis | Yes | species | eukaryota | vertebrates | species | 36245 | click here |
| alcelaphus caama | Yes | species | eukaryota | mammals | species | 59519 | click here |
| alces alces | Yes | species | eukaryota | mammals | species | 9852 | click here |
| alectoris chukar | Yes | species | eukaryota | vertebrates | species | 9078 | click here |
| alectoris rufa | Yes | species | eukaryota | vertebrates | species | 9079 | click here |
| allium cepa | Yes | species | eukaryota | plants | species | 4679 | click here |
| allium chinense | Yes | species | eukaryota | plants | species | 130426 | click here |
| allium sativum | Yes | species | eukaryota | plants | species | 4682 | click here |
| allium victorialis | Yes | species | eukaryota | plants | species | 88845 | click here |
| alnus acuminata | Yes | species | eukaryota | plants | species | 109057 | click here |
| alnus glutinosa | Yes | species | eukaryota | plants | species | 3517 | click here |
| alnus subcordata | Yes | species | eukaryota | plants | species | 109072 | click here |
| alouatta belzebul | Yes | species | eukaryota | primates | species | 30590 | click here |
| amaranthus | Yes | | | plants | genus | 3564 | click here |
| amaranthus caudatus | Yes | species | eukaryota | plants | species | 3567 | click here |
| amaranthus retroflexus | Yes | species | eukaryota | plants | species | 124763 | click here |
| amazilia candida | Yes | species | | | species | 1162386 | click here |
| amazilia rutila | Yes | species | eukaryota | vertebrates | species | 472777 | click here |
| amazilia tzacatl | Yes | species | eukaryota | vertebrates | species | 57392 | click here |
| amazona autumnalis | Yes | species | eukaryota | vertebrates | species | 151759 | click here |
| amblema plicata | Yes | species | eukaryota | invertebrates | species | 47525 | click here |
| amblyomma rotundatum | Yes | species | eukaryota | invertebrates | species | 251395 | click here |
| amblyrhynchus cristatus | Yes | species | eukaryota | vertebrates | species | 51208 | click here |
| ambrosia artemisiifolia | Yes | species | eukaryota | plants | species | 4212 | click here |
| ammodramus humeralis | Yes | species | eukaryota | vertebrates | species | 218194 | click here |
| amphispiza bilineata | Yes | species | eukaryota | vertebrates | species | 198939 | click here |
| anas clypeata | Yes | species | eukaryota | vertebrates | species | 75838 | click here |
| anas crecca | Yes | species | eukaryota | vertebrates | species | 75839 | click here |
| anas platyrhynchos | Yes | species | eukaryota | vertebrates | species | 8839 | click here |
| anodonta cygnea | Yes | species | eukaryota | invertebrates | species | 47528 | click here |
| anodonta woodiana | Yes | species | eukaryota | invertebrates | species | 120564 | click here |
| anodonta woodiana elliptica | Yes | | eukaryota | invertebrates | subspecies | 674133 | click here |
| anodonta woodiana pacifica | Yes | | eukaryota | invertebrates | subspecies | 265755 | click here |
| anodonta woodiana woodiana | Yes | | eukaryota | invertebrates | subspecies | 165462 | click here |
| anodontoides radiatus | Yes | species | eukaryota | invertebrates | species | 52385 | click here |
| antechinus stuartii | Yes | species | eukaryota | mammals | species | 9283 | click here |
| anthidium manicatum | Yes | species | | | species | 473950 | click here |
| anthochaera phrygia | Yes | species | | | species | 2020318 | click here |
| anthracothorax prevostii | Yes | species | eukaryota | vertebrates | species | 214672 | click here |
| anthus campestris | Yes | species | eukaryota | vertebrates | species | 45800 | click here |
| anthus hodgsoni | Yes | species | eukaryota | vertebrates | species | 36258 | click here |
| anthus pratensis | Yes | species | eukaryota | vertebrates | species | 45803 | click here |
| anthus spinoletta | Yes | species | eukaryota | vertebrates | species | 45802 | click here |
| anthus trivialis | Yes | species | eukaryota | vertebrates | species | 45804 | click here |
| aphodius depressus | Yes | species | eukaryota | invertebrates | species | 207143 | click here |
| apinae | Yes | | | invertebrates | subfamily | 70987 | click here |
| apis cerana | Yes | species | eukaryota | invertebrates | species | 7461 | click here |
| apis cerana japonica | Yes | subspecies | eukaryota | invertebrates | subspecies | 292787 | click here |
| apis dorsata | Yes | species | eukaryota | invertebrates | species | 7462 | click here |
| apis mellifera | Yes | species | eukaryota | invertebrates | species | 7460 | click here |
| apis mellifera ligustica | Yes | subspecies | eukaryota | invertebrates | subspecies | 7469 | click here |
| apis mellifera mellifera | Yes | subspecies | eukaryota | invertebrates | subspecies | 44477 | click here |
| apocynum androsaemifolium | Yes | species | eukaryota | plants | species | 61254 | click here |
| apodemus agrarius | Yes | species | eukaryota | rodents | species | 39030 | click here |
| apodemus chevrieri | Yes | species | eukaryota | rodents | species | 129246 | click here |
| apodemus flavicollis | Yes | species | eukaryota | rodents | species | 54292 | click here |
| apodemus speciosus | Yes | species | eukaryota | rodents | species | 105296 | click here |