Glossidiella peruensis sp. nov., a new digenean (Plagiorchiida: Plagiorchiidae) from the lung of the brown ground snake Atractus major (Serpentes: Dipsadidae) from Peru

During a survey of helminth parasites of the brown ground snake, Atractus major Boulenger, 1894 (Serpentes: Dipsadidae) from Moyobamba, region of San Martin (northeastern Peru), a new species of Glossidiella Travassos, 1927 (Plagiorchiida: Plagiorchiidae) was found and is described herein based on morphological and ultrastructural data. The digeneans found in the lung were measured and drawings were made with a drawing tube. The ultrastructure was studied using scanning electron microscope. Glossidiella peruensis sp. nov. is easily distinguished from the type- and only species of the genus, Glossidiella ornata Travassos, 1927, by having an oblong cirrus sac (claviform in G. ornata), distinctly ovate testes (rounded testes in G. ornata) and button-like papillae on the dorsal edge of the oral sucker region (absent in G. ornata). In addition, G. peruensis sp. nov. differs from G. ornata by possessing a longer distance between testes and substantially wider oral and ventral suckers. This is the first time that a species of digenean is described and reported parasitizing snakes in Peru.

Glossidiella peruensis sp. nov., a new digenean (Plagiorchiida: Plagiorchiidae) from the lung of the brown ground snake Atractus major (Serpentes: Dipsadidae) from Peru

During a survey of helminth parasites of the brown ground snake, Atractus major Boulenger, 1894 (Serpentes: Dipsadidae) from Moyobamba, region of San Martin (northeastern Peru), a new species of Glossidiella Travassos, 1927 (Plagiorchiida: Plagiorchiidae) was found and is described herein based on morphological and ultrastructural data. The digeneans found in the lung were measured and drawings were made with a drawing tube. The ultrastructure was studied using scanning electron microscope. Glossidiella peruensis sp. nov. is easily distinguished from the type- and only species of the genus, Glossidiella ornata Travassos, 1927, by having an oblong cirrus sac (claviform in G. ornata), distinctly ovate testes (rounded testes in G. ornata) and button-like papillae on the dorsal edge of the oral sucker region (absent in G. ornata). In addition, G. peruensis sp. nov. differs from G. ornata by possessing a longer distance between testes and substantially wider oral and ventral suckers. This is the first time that a species of digenean is described and reported parasitizing snakes in Peru.(AU)

Choledocystus elegans (Digenea: Plagiorchiidae) of Leptodactylus paraensis (Amphibia: Leptodactylidae) from the Brazilian Amazon / Choledocystus elegans (Digenea: Plagiorchiidae) de Leptodactylus paraensis (Amphibia: Leptodactylidae) da Amazônia brasileira

The trematodes are parasites of the several vertebrates including amphibians, however the knowledge about of the taxonomy these parasites is still confuse. The trematode Choledocystus elegans was found in the small intestine of the Leptodactylus paraensis in eastern Amazon and presents the following characteristics: several pointed tegumentary spines, papillae on the outer and inner edges of the oral and ventral suckers, a round, well-developed cirrus sac, a well-developed cirrus, oblique testicles, a ovary right side, uterine loops extending between the testicles, follicular vitellaria distributed throughout the body, starting at the genital pore region and caeca close the end of the body. For the first time, this study identified C. elegans parasitizing L. paraensis and describes morphological aspects never characterized using light and scanning electron microscopy.(AU)

Os trematodas são parasitas de vários grupos de vertebrados incluindo os anfíbios, contudo o que se conhece sobre a taxonomia destes parasitas ainda é confusa. O trematoda Choledocystus elegans foi encontrado no intestino delgado de Leptodactylus paraensis na Amazônia oriental e apresenta as seguintes características: vários espinhos pontiagudos no tegumento, papilas nas bordas externa e interna das ventosas orais e ventrais, bolsa do cirro bem desenvolvida contendo um cirro desenvolvido, testículos oblíquos, ovário destro, alças uterinas que se estendem entre os testículos, folículos vitelínicos distribuída por toda a lateral do corpo, começando ao nível do poro genital e cecos intestinais chegando até a região posterior do corpo do helminto. Pela primeira vez, este estudo identificou C. elegans parasitando L. paraensis e descreve aspectos morfológicos nunca caracterizados usando microscopia de luz comum e eletrônica de varredura.(AU)

New record of Haplometroides intercaecalis (Digenea, Plagiorchiidae) infecting a Brazilian snake

Phalotris matogrossensis (Serpentes, Colubridae) was reported as a new host for Haplometroides intercaecalis (Digenea, Plagiorchiidae). The host snake was obtained from the municipality of Anastácio, state of Mato Grosso do Sul, Brazil. One specimen of H. intercaecalis was recovered from the esophagus of the host and identified by the intercecal position of the vitellaria in the pre-acetabular region. This paper describes the second report of the occurrence of this trematode in fossorial snakes of the genus Phalotris in the state of Mato Grosso do Sul, Brazil.

New reports on parasitism by Haplometroides buccicola (Digenea, Plagiorchiidae) in Brazilian snakes

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.

Report on the occurrence of Haplometroides buccicola (Trematoda, Digenea, Plagiorchiidae) infecting Phalotris lativittatus (Serpentes, Colubridae) in Brazil

Haplometroides buccicola (Trematoda, Digenea, Plagiorchiidae) was reported in the mouth and oesophagus of Phalotris lativittatus (Serpentes, Colubridae) from Botucatu, São Paulo State, Brazil. This is the first report on the occurrence of H. buccicola parasitizing P. lativittatus. The Haplometroides genus was also discussed and the most important morphological characters for the identification of the species H. buccicola and H. odhneri are presented.

Copulation of Opisthogonimus fonsecai Ruiz & Leão, 1942 (Trematoda, Digenea, Plagiorchiidae), parasite of Bothrops moojeni Hoge, 1966 (Serpentes, Viperidae)

Copulation in Opisthogonimus fonsecai Ruiz & Leão, 1942 (Trematoda, Digenea, Plagiorchiidae), parasite of Bothrops moojeni Hoge, 1966 (Serpentes, Viperiade), was reported. Data on the histology of the cirrus and metraterm of the copulants were presented. Morphology of the cirrus was also examined by scanning electron microscopy.

Copulation of Opisthogonimus fonsecai Ruiz & Leão, 1942 (Trematoda, Digenea, Plagiorchiidae), parasite of Bothrops moojeni Hoge, 1966 (Serpentes, Viperidae)

Copulation in Opisthogonimus fonsecai Ruiz & Leão, 1942 (Trematoda, Digenea, Plagiorchiidae), parasite of Bothrops moojeni Hoge, 1966 (Serpentes, Viperiade), was reported. Data on the histology of the cirrus and metraterm of the copulants were presented. Morphology of the cirrus was also examined by scanning electron microscopy.(AU)

Occurrence of Haplometroides odhneri (Trematoda, Digenea, Plagiorchüdae) infecting Leptotyphlops koppesi (Serpentes, Leptotyphlopidae) / Ocorrência de Haplometroides odhneri (Trematoda, Digenea, Plagiorchiidae) parasitando Leptotyphlops koppesi (Serpentes, Leptotyphlopidae)

Descreveu-se a ocorrência de Haplometroides odhneri (Trematoda, Digenea, Plagiorchiidae) na traquéia e esôfago de Leptotyphlops koppesi (Serpentes, Leptotyphlopidae) proveniente da Usina Hidrelétrica Corumbá I, município de Caldas Novas, Goiás. Este é o primeiro relato sobre a ocorrência de H. odhneri parasitando L. koppesi.(AU)