NEW SPECIES OF HAPLOMETROIDES (DIGENEA: PLAGIORCHIIDAE) FROM PHALOTRIS NASUTUS (GOMES, 1915) (SERPENTES, COLUBRIDAE (original) (raw)
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Journal of Venomous Animals and Toxins including Tropical Diseases, 2008
The occurrence of Haplometroides buccicola (Digenea, Plagiorchiidae) in the esophagus of two Brazilian snakes is reported in the present study. The trematodes were collected from one Micrurus corallinus (Elapidae) and one Phalotris lativittatus (Colubridae); both snakes were found in Botucatu city, São Paulo State, Brazil. Morphological and morphometric analyses of the trematodes are presented. For the first time Micrurus corallinus has been recorded as a host for H. buccicola and this is the second time that P. lativittatus has been reported as a host for this trematode species.
Zoosystema, 2000
Deux Trichostronglylina (Nematoda) du Venezuela : une nouvelle espece d'Ornithostrongylus (Heligmosomoidea), parasite d'oiseau (Columbiformes) et une nouvelle espece de Molineus (Molineoidea), parasite de serpent (Squamata). Ornithostrongylus volcani n. sp. (Nematoda, Trichostrongylina, Heligmosomoidea), parasite de l'intestin grele de Zenaidura auriculata (oiseau, Columbidae) et Molineus inexpectatus n. sp. (Nematoda, Trichostrongylina, Molineoidea), parasite de l'intestin grele de Lachesis mutus (serpent, Crotalidae), toutes deux originaires du Venezuela, sont decrites ici. Ornithostrongylus volcani n. sp. est morphologiquement proche de O. cramae Vigueras, 1934, parasite du meme hote a Cuba, particulierement par la forme en arc de cercle des branches externo-dorsales des spicules. Il s'en distingue par la disposition relative des cotes bursales 2 a 8 et, chez la femelle, par la presence d'une aile vulvaire. O. hastatus (Linstow, 1905), parasite de Phasiani...
Serpentirhabdias atracti n. sp. is described based on specimens discovered in the lung of Atractus major Boulenger from Caxiuana˜ National Forest, Para´, Brazil. The new species is assigned to Serpentirhabdias Tkach, Kuzmin & Snyder, 2014 based on morphological characters (comparatively thin body cuticle without prominent inflations, arrangement of circumoral papillae in two lateral groups, pre-equatorial position of vulva, eggs in uteri at early cleavage stages), as well as because of its parasitism in snakes. The new species is most similar to S. vellardi (Pereira, 1928) due to the absence of lips and buccal capsule, similar body dimensions, and the specificity to dipsadid snakes in Brazil. The two species differ in the shape of the tail (bulbous dilatation in the posterior part followed by a threadlike tail tip present in S. atracti n. sp.), the width of the oesophagus, and the size of the excretory glands. Serpentirhabdias atracti n. sp. is the sixth species of this genus found in the Neotropical Region.
REDESCRIPTION OF PHALOTRIS NIGRILATUS FERRAREZZI, 1993 (SERPENTES: COLUBRIDAE: XENODONTINAE
Herpetologica, 2007
Phalotris nigrilatus Ferrarezzi, 1993 is a poorly known species described from a single specimen from Paraguay. Two new specimens make possible a more detailed description of the species, including a description of the hemipenis, and support the validity of the species. Hemipenial morphology provides another character that further supports the inclusion of the species in the nasutus group. We describe variation within the species, probable sexual dimorphism, and the known distribution. It will be necessary to do further work in Paraguay to establish the conservation status of this apparently rare and endemic species.
2010
Rhabdias filicaudalis n. sp. (Nematoda: Rhabdiasidae) from the lung of Spilotes pullatus (Serpentes: Colubridae) is described. The host snake was captured in the municipality of Avaré, São Paulo State, Brazil. Rhabdias filicaudalis n. sp. differs from all other species by the combination of the following characters: straight body, truncated anterior end, six weakly developed lips arranged in two opposite groups of three, pre-equatorial vulva, oesophagus length/body length ratio (%) 4.9-7.5 (5.8^0.6), nerve ring distance from anterior end/oesophagus length ratio (%) 36.9-61.1 (49.8^6.4), tail length/body length ratio (%) 3.0-5.5 (4.0^0.5), vulva distance from anterior end/body length ratio (%) 39.9-51.7 (45.9^3.5), and a cuticular filiform tail tip.
Journal of Parasitology, 2006
During a study on the helminth fauna of Liophis anomalus specimens deposited in the Reptile Collection of the Secci6n Zoología Vertebrados, Facultad de Ciencias, Uruguay, a new genus of Opisthogoniminae was found. Paracotyletrema n. gen. is described from the buccal cavity and esophagus of specimens from Departamento de Flores, Uruguay. This new genus differs from the other 2 Opisthogoniminae, Opisthogonimus and Westella, by having much smaller body size; maximum width at level of posterior end of oral sucker; oral sucker length more than one-fourth of body length; oral sucker and acetabulum separated by a distance of about the diameter of pharynx; cirrus pouch length more than half of body length; and testes in completely coincident zones. The type and only species, Paracotyletrema poncedeleoni n. gen., n. sp., is defined by the following diagnostic characters: mean oral sucker length one-third to one-half of body length; cirrus pouch of about body length, contorted, mainly acetabular; large, round testes in nearly adjacent fields, and an ovary nearly adjacent to right testis. Besides the type locality, Paracotyletrema poncedeleoni has been found in L. anomalus specimens from the Departamentos of Artigas and Treinta y Tres; therefore, it has a widespread distribution in Uruguay.