Arcos poecilophthalmos
Arcos rhodospilus
Arcostaphylos rubra
Arctagrostis
Arctagrostis latifolia
Arctia
Arctia caja
Arctia casta
Arctia cecilia
Arctia deserta
Arctia festiva
Arctia flavia
Arctia kindermanni
Arctia villica
Arctica islandica
Arctictis
Arctictis bintourong
Arctictis binturong
Arctiidae
Arctinia caesarea
Arctium
Arctium cimbricum
Arctium lappa
Arctium minus
Arctium nemorosum
Arctium tomentosum
Arctium x tomentosum
Arctoa
Arctoa anderssonii
Arctoa fulvella
Arctoa hyperborea
Arctocebus
Arctocebus aureus
Arctocebus calabarensis
Arctocephalus
Arctocephalus australis
Arctocephalus forsteri
Arctocephalus galapagoensis
Arctocephalus gazella
Arctocephalus philippi
Arctocephalus philippii
Arctocephalus pusillus
Arctocephalus pusillus doriferus
Arctocephalus townsendi
Arctocephalus tropicalis
Arctocetraria nigricascens
Arctocorisa carinata
Arctocorisa germari
Arctogadus glacialis
Arctogalidia
Latina Nova