Acalitus ferrugineum Aceria fraxini Aceria trinema Aceria triplacis Actinacantha Adanson's House Jumper Adelaide trapdoor spider Adoxotoma nodosa Aelurillus v-insignitus Agelena labyrithica Agelenopsis naevia Aglaoctenus lagotis Agroeca brunnea Alopecosa kochi Alpaida bicornuta Amaurobius simlis Amazon Ribbed Tarantula Ambicodamus crinitus Amblyomma cajennense Amblyomma tholloni American dog tick American House Spider American Nursery Web Spider Amyciaea lineatipes