Strongyloides ferreirai sp.n. (Nematoda, Rhabdiasoidea) parasito do roedor Kerodon rupestris (Wied.) no Brasil

É descrita uma nova espécie de nematóide do gênero Strongyloides Grassi, 1879, Strongyloides ferreirai sp.n. parasita do instestino delgado de Kerodon rupestris (Wied.) proveniente de Floriano Peixoto, Estado do Piauí. Esta é a primeira referência deste gênero parasitando roedor caviideo no Brasil.

Neohilgertia venusti Gen. N. SP. N. (Nematoda: Oxyuridae)from Thylamys venustus cinderellus (Thomas) Reig, Kirsch & Marshall, 1985 (Marsupialia: Didelphidae) in Burruyacu, Tucuman, Argentina - Systematic position and possible evolution

Neohilgertia gen. n. proposed for Oxyuridae nematodes from Thylamys venustus cinderellus (Marsupialia: Didelphidae) is described. The hypothesis about the possibility of a secondary parasitism for marsupials and the origin of the genus in the African Sciuridae parasite ancestors is discussed.

A new helminth parasite of fish: Spirocamallanus freitasi sp. n. (Nematoda - Camallanidae)

A new species of nematode is described, Spirocamallanus freitasi sp. n. The worms were collected from fishes (Bergiaria westermanni, Pimelodus maculatus and Pimelodus sp.) living in Três Marias Dam (São Francisco River) in the State of Minas Gerais, Brazil. Spirocamallanus freitasi sp. n. differs from Procamallanus iheringi, P. amarali, P. macaensis, P. (Spirocamallanus) pimelodus, P. (S.) solani and P. (S.) pereirai by having digitated larger spicule and from P. cruzi by having not digitated terminal parts of both spicules. It differs also from P. (S.) intermedius by having not larger spicule divided in two undigitated branches and six to nine sclerotized bands in the buccal capsule; P. rarus has three to four sclerotized bands and tridigitated larger branch of longer speicule, differing from S. feitasi sp. n.

Raphidascaris (Sprentascaris) lanfrediae sp. nov. (Nematoda: Anisakidae) from the fish Satanoperca jurupari (Osteichthyes: Cichlidae)

Raphidascaris (Sprentascaris) lanfrediae sp. nov. is described from the intestine of the freshwater fish Satanoperca jurupari (Heckel) (Cichlidae) from the Guamá River, state of Pará, Brazil. The prevalence in fish (n = 59) was 27% with intensity of one-124 (mean 16) nematodes per fish. The new species is characterized mainly by the markedly larger size of ventricular appendix in relation to the oesophagus, presence of short male caudal alae, 14-16 subventral pairs of preanal papillae and six pairs of postanal papillae.

Pseudascarophis brasiliensis sp. nov. (Nematoda: Cystidicolidae) parasitic in the Bermuda chub Kyphosus sectatrix (Perciformes: Kyphosidae) from southeastern Brazil

A new species of Pseudascarophis (Nematoda: Cystidicolidae) found in the stomach of Kyphosus sectatrix (Linnaeus) (Kyphosidae), off Rio de Janeiro, Brazil, is described. The new species can be differentiated from the other congeners by the presence of lateral alae, distinct but inconspicuous cephalic papillae at the anterior end, three pairs of precloacal and one pair of adcloacal papillae in males, egg morphology and morphometry of glandular oesophagus and spicules. Pseudascarophis tropica is transferred to Ascarophis as Ascarophis tropica (Solov'eva) comb. n. due to its ambiguous diagnosis.

Descripción de Thelastoma domesticus sp. nov. (Oxyurida, Thelastomatidae) parásita de ninfas Periplaneta americana (Blattodea, Blattidae) en Argentina

Thelastoma domesticus sp. nov. se halló parasitando a ninfas de Periplaneta americana (Linnaeus, 1758) en la ciudad de La Plata, Província de Buenos Aires, Argentina, en el presente trabajo se describe e ilustra. Esta especie nueva se caracteriza por tener en la boca un estoma simple de paredes gruesas, fuertemente cuticularizada formando tres pares de nodulos en dos filas, sin dientes, el poro excretor es posterior, se ubica al comienzo del intestino, el macho presenta una distribución particular de las papilas genitales: un par grande de papilas preanales y tres pares posanales agrupadas, de las cuales el segundo par se encuentra desplazado lateralmente, configurando así con las otras papilas posanales un círculo.

Una especie nueva de Cheiropteronema (Nematoda, Molineidae) en Artibeus planirostris (Chiroptera, Phyllostomidae) en la Argentina

Se describe a Cheiropteronema striatum sp. nov. parásita del murciélago Artibeus planirostris (Spix, 1823). Se caracteriza por presentar vesícula cefálica estriada, superficie de los huevos con puntuaciones, espículas iguales, nacimiento simétrico del ala espicular, particular disposición y número de crestas del synlophe y por carecer de diente esofágico. Es la segunda especie del género y la primera que se registra en quirópteros frugívoros de la Argentina.

Revisão do gênero Klossinemella Costa, 1961 (Nematoda, Cobboldinidae), com descrição de uma nova subfamília e de uma nova espécie

Neste trabalho os autores discutem a posição sistemática do gênero Klossinemella Costa, 1961, propondo uma nova organização para a família Cobboldinidae Skrjabin, 1948. Apresentam a descrição das espécies dêste gênero (K. iheringi, K. conciliatus e K. travassosi sp. n.) e do ciclo evolutivo.

Novas contribuicões ao conhecimento do gênero Procamallanus (Nematoda, Camallanoidea)

Os autores, continuando com o estudo dos Procamallanus brasileiros, propõem Procamallanus (S.) solaini como espécie nova para o gênero. Redescrevem Procamallanus (S.) iheringi Travassos, Artigas & Pereira, 1928, depois de terem tido acesso ao material tipo e elucidado dúvidas a respeito de sua morfologia. Para Procamallanus (S.) inopinatus Travassos, Artigas & Pereira, 1928, tiveram a descrição de Pinto & Noronha, 1972 adaptada. De Procamallanus (S.) amarali Vas & Pereira, 1934, tornam conhecida a fêmea da espécie e fazem uma breve redescrição do macho. Listam amostras de Procamallanus sp. que não conduziram a um diagnóstico preciso, devido ao seu precário estado de conservação. Foram examinadas amostras de helmintos que fazem parte da Coleção Helmintológica do Instituto Oswaldo Cruz.

Novas considerações morfológicas e sistemáticas sobre os Procamallanus brasileiros (Nematoda, Camallanoidea)

Mais uma vez os autores apresentam os resultados obtidos, após examinarem 62 amostras de Procamallanus brasileiros parasitas de peixes dulcícolas. Duas novas espécies são propostas: Procamallanus (Spirocamallanus) pexatus e Procamallanus (Procamallanus) peraccuratus, esta representando a primeira ocorrência do subgênero no Brasil. Procamallanus (Spirocamallanus) probus pinto & fernandes, 1972, é considerada sinônimo de Procamallanus (Spirocamallanus) inopinatus Travassos, Artigas & Pereira, 1928. Um lote não identificado, por insuficiência de dados, é incluído como Procamallanus (Spirocamallanus) sp.

Travassosnema gen. n. with the description of T. travassosi sp. n. (Dracunculoidea, Guyanemidae) parasite of Acestrorhynchus lacustris Reinhardt, 1874 (Characidae) from Três Marias Reservoir, MG, Brazil

A new genus, Travassosnema (Guyanemidae, Dracunculoidea) is proposed to include filariid worms having esophagus divided into muscular and glandular parts, with esophageal appendix near junction with intestine; anus functional; vulva anterior, well developed and functional in mature females. Travassonema travassosi sp. n., a parasite of Acestrorhynchus lacustris Reinhardt, 1874 from Três Marias Reservoir (São Francisco River) in the State of Minas Gerais, Brazil, is described. The generic and the specific names are a tribure to Brazilian parasitologist Lauro Travassos at his birth centenary.

Two new species in the genus Cucullanus (Nematoda - Cucullanidae) from the australian region

Two new species of Cucullanus are described: C. bourdini n. sp. and C. laurotravassosi n. sp. C. bourdini is a parasite of Pristipomoides filamentosus , Aprion virescens and P. flavipinnis (Lutjanidae) in New Caledonia. The species is closely related to C. amadai, C. bulbosus and C. hians by the disposition of the post-and ad-cloacal papille but differs by the more posterior position of the deirids. C. laurotravassosi n. sp., a parasite of Arius sp. in Australia, is close to C. bagre but can be distinguished by the more posterior position of post-cloacal papillae.

On some family related parasites (Nematoda, Cucullanidae) from the marine fish Paralonchurus brasiliensis (Steindachner, 1875) (Pisces, Ostraciidae)

Dichelyne (Cucullanellus) elongatus (Tornquist, 1931) Petter, 1974 and Cucullanus pulcherrimus Barreto, 1918, from Paralonchurus brasiliensis (Steind., 1875) are redescribed and two specimens of Dichelyne (Cucullanellus) sp. are also reported in this host, despite lack of previously, was again identified in Brazil since its original description and posterior illustration. The present findings represent also a new host record for the referred genera: Dichelyne Jagerskiold, 1902 and Cucullanus Mueller, 1777. D. (C.) elongatus is also referred in Brazil for the first time.

Two new mermithidis (Nematoda: Mermithidae) parasites of Simulium wolffhuegeli Roubaud and S. jujuyense (Paterson & Shannon) (Diptera: Simuliidae) in Argentina

Two new species of mermithids (Nematoda: Mermithidae), Gastromermis doloresi n. sp. a parasite of Simulium wolffhuegeli Roubaud and Hydromermis doloresi n. sp. a parasite of S. jujuyense (Paterson & Shannon) from Córdoba, Argentina, are described and illustrated. G. doloresi n. sp. is characterized by having medium sized, pear-shaped and oval amphids, eight hypodermal chords all around the body, cylindrical S-shaped vagina, single long spicule 528 [mi]m, whith teh sculpture tip, three rows of genital papillae in which the middle row contains 17 pre-anal and 9 post-anal papillae, and lateral rows contain 18 papillae. Hydromermis doloresi n. sp. can be distinghished by the following: medium sized, pear-shaped amphids, eight hypodermal chords, a cylindrical, S-shaped vagina, one short curved spicule with sculpture and genital papillae in three rows. The medium ventral row of papillae has 4 double and 9 single pre-anal papillae and 3 double and 6 single port-anal papillae, lateral rows have 18 single papillae each.

Four new species of Oswaldocruzia (Nematoda: Trichostrongylina, Molineoidea) Parasitizing amphibians and lizards from Ecuador

Description of four new species of Oswaldocruzia parasitizing Iguanidae and Leptodactylidae from Ecuador, demonstrate that they are morphologically close to each other. Like most of the other neotropical and holarctic Oswaldocruzia , they are characterized by spicules with three main branches: blade, shoe and fork; the division of the fork within the distal third of the spicule length appears to be characteristic of the neotropical species. - Oswaldocruzia bainae n. sp. parasitizing Anolis chrysolepis and Anolis fuscoauratus possesses a synlophe visible only on transversal sections of the body. It is composed of rounded and not pointed ridges. - Oswaldocruzia tcheprakovae n. sp. parasitizing Eleutherodactylus altamazonicus is closely related to O. bainae , but the synlophe is present only in the anterior and posterior extremities of the body. - Oswaldocruzia cassonei n. sp. parasitizing Eleutherodactylus lanthanites is closely related to O. taranchoni, Ben Slimane and Durette-Desset, 1995, a parasite of Bufo marinus from Brazil. It is differentiated by the synlophe and the measurements. - Oswaldocruzia petterae n. sp. parasitizing Leptodactylus pentadactylus is closely related to O. chambrieri, Ben Slimane and Durette-Desset, 1993, parasitizing Bufo and Eleutherodactylus in the same region. It is differentiated since, for an equivalent length of the body, the ridges are almost two times fewer and the spicules smaller.