Family Anenterotrematidae Yamaguti

The life-cycle of anenterotrematids is not known, but, judging by related digenean groups, the bats acquire the parasite by the ingestion of arthropods infected with the metacercarial stage. All digeneans utilize molluscs as first intermediate hosts.

1. Body pyriform, less than 1mm in length.................................................. Anenterotrema Stunkard Species: A. eduardocaballeroi (Freitas, 1960); A. liliputianum (Travassos, 1928); A. mesolecitha Marshall & Miller, 1979; Anenterotrema sp.

- Body elongate, measuring 1–5 mm ........................................... .. Apharyngotrema Marshall & Miller Species: A. apharyngotrema Marshall & Miller, 1979; A. lenti Santos & Gibson, 1998