Family Microphallidae (Ward, 1901) Travassos, 1920

Levinseniella Stiles & Hassall, 1901

Levinseniella (Monarrhenos) anenteron (Szidat, 1964) Deblock, 1978

Syn.: Austromicrophallus anenteron Szidat, 1964 . Other hosts: L. maculipennis .

Maritrema Nicoll, 1907

Maritrema bonaeriensis Etchegoin & Martorelli, 1997

Other host: L. maculipennis, L. atlanticus

Location: small intestine.

Localities: Mar Chiquita coastal lagoon and Orense beach, Buenos Aires Province (Argentina).

Life history: H1: Heleobia australis australis (d´Orbigny) (natural host). H2: Cytograpsus angulatus Dana, Chasmagnathus granulate Dana; metacercariae in hepatopancreas.

References: Etchegoin & Martorelli (1997a), Cremonte et al. (1999a), La Sala et al. (2009).

Maritrema eroliae Yamaguti, 1939

Other host: various shorebirds.

Location: small intestine, gizzard.

Locality: Talcahuano (Chile).

Reference: Al-Kandari et al. (2007). Present study.

Maritrema orensensis Cremonte & Martorelli, 1998 Other host: L. atlanticus

Site of infection: small intestine.

Locality: Orense Beach, Buenos Aires province (Argentina). Reference: Cremonte & Martorelli (1998), La Sala et al. (2009).

Microphallus Ward, 1901

Microphallus nicolli Baer, 1943

Location: small intestine.

Locality: Talcahuano (Chile).

Life history: H1: Emerita asiatica (Subramoniam), Albunea symnista (L.). Reference: Present study.

Odhneria Travassos, 1921

Odhneria odhneri Travassos, 1921

Other host: L. atlanticus .

Location: small intestine.

Localities: Fracasso beach, San José Gulf, Chubut Province (Argentina). Talcahuano (Chile). References: Stunkard (1979), Cremonte & Etchegoin (2002), La Sala et al. (2009). Present study.