Comparative Parasitology 67(1) 2000 - Peru State College

94 COMPARATIVE PARASITOLOGY, 67( 1), JANUARY 2000
A = Nearctic helminth species
• = Neotropical helminth species
• = Endemic helminth species
Map 1. Map of Mexico showing collecting sites; and limits of nearctic and neotropical regions (dotted
line). 1 = Presa Miguel de la Madrid, Tuxtepec, Oaxaca; 2 = Laguna Escondida, Los Tuxtlas, Veracruz;
3 = Laguna El Zacatal, Los Tuxtlas, Veracruz; 4 = Lago La Mina Preciosa, Puebla; 5 = Cienaga de
Lerma, Estado de Mexico; 6 = Lago de Xochimilco, Mexico City; 7 = Manantiales de Cointzio, Michoacan;
8 = Lago de Patzcuaro, Michoacan; 9 = Lago de Zacapu, Michoacan; 10 = Lago de Cuitzeo,
Michoacan; 11 = Lago de Chapala, Jalisco; 12 = Chamela, Jalisco.
pipiens complex," widely distributed from central
Mexico to Canada (Hillis et al., 1983). Apparently,
this group of frogs harbors a relatively
homogeneous digenean fauna throughout its
range to the volcanic axis. Little is known about
the parasitic fauna of this group of frogs in the
lowlands of Mexico. In some cases, as in the
N
A
93°W
21°N
genus Haematoloechus, where an enormous diversity
of species has been recorded, several
speciation events have occurred in the endemic
amphibians of this biogeographical area. This is
the case for H. pulcher, probably derived from
H. complexus, and Haematoloechus illimis,
whose sister taxon is not clearly distinguished
Figures 1-5. Ventral views. 1. Cephalogonimus americanus (Stafford, 1902) Stafford, 1905. 2. Gorgoderina
attenuata (Stafford, 1902) Stafford, 1905. 3. Megalodiscus americanus Chandler, 1923. 4. Catadiscus
rodriguezi Caballero, 1955. 5. Haematoloechus coloradensis (Cort, 1915) Ingles, 1932. Scales in millimeters.
Figures 6-10. Ventral views. 6. Haematoloechus complexus (Seely, 1906) Krull, 1933. 7. Haematoloechus
illimis Caballero, 1942. 8. Haematoloechus longiplexus Stafford, 1902. 9. Haematoloechus medioplexus
Stafford, 1902. 10. Haematoloechus pulcher Bravo, 1943. Scales in millimeters.
Figures 11-15. Ventral views. 11. Glypthelmins parva Travassos, 1934. 12. Glypthelmins sp. 13. Glypthelmins
calif orniensis (Cort, 1919) Miller, 1930. 14. Glypthelmins quieta (Stafford, 1900) Stafford, 1905.
15. Glypthelmins facioi Brenes, Arroyo, Jimenez, and Delgado, 1959. Scales in millimeters.
Copyright © 2011, The Helminthological Society of Washington