Abbreviated Button Slug Aborted entoloma Abutilon theophrasti Acadian hermit crab Acalitus ferrugineum Acanthocephala terminalis Acanthoscelidius acephalus Acanthus balcanicus Acarospora fuscata Aceria trinema Aceria triplacis Acholla multispinosa Acilius mediatus Acorn Plum Gall Wasp Acorn weevil Acrobasis caryalbella Acrocercops astericola Acrocercops strigosa Acronicta clarescens Acronicta interrupta Acronicta lobeliae Addison's Leather Flower Adjutant Wainscot Adonis ladybird