Comparative Parasitology 67(2) 2000 - Peru State College

Comp. Parasitol.
67(2), 20(K) pp. 165-168
Langeronia burseyi sp. n. (Trematoda: Lecithodendriidae) from the
California Treefrog, Hyla cadaverina (Anura: Hylidae), with Revision
of the Genus Langeronia Caballero and Bravo-Hollis, 1949
MURRAY D. DAiLEY1-3 AND STEPHEN R. GOLDBERG2
1 The Marine Mammal Center, Marin Headlands, Sausalito, California, U.S.A. 94965
(e-mail: daileym@tmmc.org) and
2 Department of Biology, Whittier College, Whittier, California, U.S.A. 90608 (e-mail:
sgoldberg @ whittier.edu)
ABSTRACT: Langeronia burseyi sp. n. (Trematoda: Lecithodendriidae), a new trematode from the small intestine
of Hyla cadaverina Cope, 1866, is described and illustrated. One (0.03%) of 36 adult specimens of H. cadaverina
collected from Orange County, California, U.S.A., harbored 83 specimens of L. burseyi sp. n. Langeronia bursevi
sp. n. is distinguished from all other species in the genus by body size, location of the cirrus, length of the ceca,
placement of the vitellaria, and the shape of the excretory bladder. This is the first report of a species of
Langeronia from a member of the Hylidae. An emended diagnosis and key to the genus Langeronia are presented.
KEY WORDS: Digenea, Lecithodendriidae, Langeronia burseyi, new species description, taxonomy, California
treefrog, Hyla cadaverina, Orange County, California, U.S.A.
The taxonomic statuses of the genera Langeronia
Caballero and Bravo-Hollis, 1949, and
Loxogenes Stafford, 1904, have been the subject
of much controversy. Caballero and Bravo-Hollis
(1949) erected the genus Langeronia for a
new species, Langeronia macrocirra, from the
northern leopard frog, Rana pipiens Schreber,
1782, in Mexico. A second species, Langeronia
provitellaria, was described by Sacks (1952)
from the Florida leopard frog, Rana sphenocephala
Cope, 1886, in Florida, U.S.A. Yamaguti
(1958) considered Langeronia synonymous with
the genus Loxogenes Stafford, 1905. Brenes et
al. (1959) examined specimens recovered from
the cane toad, Bufo marinus (Linnaeus, 1758) in
Costa Rica and disagreed with Yamaguti, concluding
that Langeronia was a valid genus. Ubelaker
(1965) collected trematodes from B. marinus
in Nicaragua and published a redescription
of L. macrocirra, concluding that L. provitellaria
should be considered a synonym of that species.
He also supported Yamaguti and his 1958
synonymy of the 2 genera. Christian (1970)
studied specimens collected from the intestines
of R. pipiens in Wisconsin, Ohio, and Vermont,
U.S.A., which he identified as L. provitellaria,
Loxogenes sp., and a new species, Langeronia
parva, respectively. Christian (1970) disagreed
with Yamaguti's (1958) opinion synonymizing
3 Corresponding author.
165
Langeronia and Loxogenes and supported Brenes
et al. (1959) in validating the generic status
of Langeronia. Christian (1970) did not mention
the article by Ubelaker (1965) and the synonomy
of L. macrocirra and L. provitellaria. However,
Christian (1970) did state that in his opinion,
according to the description and measurements
given by Brenes et al. (1959) for "L. macrocirra,"
they were actually redescribing L.
provitellaria. This would tend to explain why
Ubelaker (1965) synonymized the 2 species,
comparing the overlap of measurements from
his specimens with the measurements given by
Brenes et al. (1959). Yamaguti (1958) cited Loxogenes
s. str. and Langeronia as subgenera of
the genus Loxogenes s. lat. Babero and Golling
(1974) reported 3 species of L. provitellaria
from 2 bullfrogs (Rana catesbiana Shaw, 1802)
collected in Nye County, Nevada, U.S.A.
Materials and Methods
One of 36 California treefrogs, Hyla cadaverina
Cope, 1866, examined (LACM No. 88937) from
Orange County, California was infected with 83 trematodes
in the large intestine. All H. cadaverina specimens
had been collected between 1952 to 1967 and
deposited in the herpetology collection of the Natural
History Museum of Los Angeles County (LACM).
They were originally preserved in 10% formalin and
later stored in 70% ethanol.
Worms were removed from the large intestine,
rinsed in 70% ethanol, stained in Delafield's hematoxylin,
dehydrated in ethanol, and mounted in Canada
Copyright © 2011, The Helminthological Society of Washington