Galeata antiochia (H. Schütt, 1993) Turkey15 mm
Laminifera antiqua (FOSSIL) (Klebs, 1886) †
Hemiphaedusa antuensis H. Nordsieck, 2005 Taiwan17 mm
Hemiphaedusa antuensis chichiensis H. Nordsieck, 2005 Taiwan18 mm
Montenegrina apfelbecki (R. Sturany, 1907) Albania
Bathyptychia aplostoma (P.M. Heude, 1885)
Barcania apolloniana R.A.M. Brandt, 1968 Libya16,9 mm
Erjaveciella approximans (A. Schmidt, 1857) Slovenia
Thaumatoptyx aptyx H. Nordsieck, 2003 Taiwan
Serruluna aptyx (FOSSIL) H. Nordsieck, 2007 †
Tsoukatosia arabatzis A. Reischütz& P.L. Reischütz, 2014 GR-GRC
Oospira arakana (F. Stoliczka, 1872)
Megalophaedusa aratorum H.A. Pilsbry, 1903 Ajiro, Ehime, Japan9,6 mm
Phaedusa arborea K. Tomiyama, 1984 Japan
Albinaria arcadia (O. Böttger, 1878) Greece17 mm
Albinaria arcadica (L. Pfeiffer, 1868) Greece18,5 mm
Neniops archidona (F.P. Jousseaume, 1900) Ecuador30,7 mm
Grandinenia ardouiniana (P.M. Heude, 1882) Vietnam, Tonkin37 mm
Temesa argentina (M.I. Hylton-Scott, 1954) Salta, Argentina18 mm
Tsoukatosia argolica A. Reischütz, P.L. Reischütz& Szekeres, 2016 GR-GRC
Albinaria argynnis (C.A. Westerlund, 1898) Greece, Peloponnesus
Albinaria ariadne M. Schilthuizen& E. Gittenberger, 1991 Greece, Crete Island16,2 mm
Hemizaptyx arikangensis C.K. Chang, 1992
Medora armata (H.C. Küster, 1847) Dalmatia16,5 mm
Laminifera arneggensis (FOSSIL) Miller, 1907 †
Albinaria arthuriana (O. Böttger, 1878) Greece, Crete Island16,1 mm
Canalicia articulata (FOSSIL) (C.L.F. von Sandberger, 1863 †) Germany
Formosana artifina (P.M. Heude, 1885) Chengkou, Sichuan Province, China40 mm
Oospira asaluensis (W.T. Blanford, 1872) India, Cachar
Hemizaptyx asperata (H.A. Pilsbry, 1905) Japan, Kagoshima
Pyrostoma asphaltina (E.A. Rossmässler, 1836) Italy, Alpes North East17,7 mm
Alinda atanasovi (J. Urbanski, 1964) Bulgaria
Columbinia atracta H.A. Pilsbry, 1949 Peru, Cerro Azul
Montenegrina attemsi (A.J. Wagner, 1914) Macedonia13,2 mm
Montenegrina attemsi jakupicensis W.A. Fauer, 1993 Macedonia