"Gastrimargus willemsei Ritchie, J. M., 1982" . "Gastrimargus willemsei" . "5099541" . "Gastrimargus willemsei" . _:b75909846 . "Ritchie, J. M., 1982" . . . "439532" . _:b75909846 "GBIF id" . . _:b75909846 . . _:b75909846 . . _:b75909846 "5099541" . . . "Gastrimargus willemsei" . .