Three new species of neotropical Sarcophagidae (Diptera)

Three new species of Neotropical Sarcophagidae are described. Miltogrammatinae: Oebalia costarica sp. n (Costa Rica) and Senotainia trifida sp. n. (Chile), of which the latter is the first representative of the subfamily with a tripartite phallotreme. Sarcophaginae: Johnsonia woodorum sp. n. (Costa Rica, Panama).

Variação sazonal da fauna vágil de Sargassum stenophyllum (Martens) em duas estações com diferentes graus de exposicäo às ondas, em Ibicuí, Baía de Sepetiba, estado do Rio de Janeiro, Brasil

The seasonal variation of the vagile fauna associated to Sargassum stenophyllum was analyzed from March/1986 to February/1987. The samples were obtained at two stations with differents intensity of wave exposures. Hight density of nematods and amphipods were observed during all of sampling period. Gammarids seems to be more dominant on the exposure site, while nematods, polychaetes and mollusks do on the sheltered one.

Classificação de Phaonia Robineau-Desvoidy (Diptera, Muscidae) da região neotropical: I. Considerações sobre a sinonímia de Bigotomyia Malloch, com descrição de uma espécie nova

Some considerations about the synonym of Bigotomyia Malloch, 1922 and Phaonia R.-D, 1830 are made. A new species, P. hugonis sp. n. is described from Peru and Equador.

New synonymy and new species in neotropical chloropidae (Diptera)

An ephydrid, Hyadina porteri Brèthes, 1919, is found to be a senior synonym of Hippelates australis Sabrosky, 1955. New combination: Liohippelates porteri (Brèthes). Two new species, Pseudogaurax souzalopesi from Peru and P. silbergliedi from Panama are described and placed in the synopsis by Sabrosky (1966).

The neotropical genus Opeatocerata Melander (Díptera, Empididae)

The Neotropical empidid genus Opeatocerata Melander, hitherto known from only a sigle female from Mexico, is redefined in the light of new material, including males. Three new species are described and illustrated, a key provided and the presence of the genus now additionally established in Costa Rica, Panama, Bolivia, Ecuador, Trinidad and Brazil.

The neotropical biting midges related to Culicoides paraensis (Diptera: Ceratopogonidae)

Culicoides paraensis (Goeldi), a common and widespread American bloodsucking midge that has been incriminated in the transmission of Mansonellosis and Oropouche Fever of humans in South America, is redescribed and figured. All published records are listed and new distribution is based on examination of extensive collections from throughout its range. Three closely related species of the subgenus Haematomyidium that have been confused with C. paraensis are briefly redescribed and figured, and a key is presented for their identification.

Studies on sandfly fauna (Diptera: Psychodidae) in a foci of cutaneous leishmaniasis in Mesquita, Rio de Janeiro State, Brazil

Lutzomyia intermedia was the predominant species. It was collected indoors but in much higher numbers outdoors, in the close vicinity of houses. In comparative captures it was found to feed more frequently on equines, and less frequently on man and dogs. Studies, using man and animals as baits, showed that blood-feeding started in the evening, and remained stable during the night, until early morning. June, August and October were the months of highest density.

Two new neotropical species of predaceous midges of the tribe sphaeromiini (Diptera: ceratopogonidae)

Two new Neotropical species of the tribe Sphaeromiini are described and illustrated, Mallochohelea limitrofe from Argentina and Uruguay, and Neobezzia wirthi from Argentina. The first species is only known from the female sex, being the second one described from both, female and male specimens.

Sphaerohelea, a new neotropical predaceous nidge genus of the tribe Sphaeromiini (Diptera: ceratopogonidae)

Sphaerohelea, a new Neotropical genus of predaceous midges related to Lanehelea, Spnaeromias, Chelohelea, Phaenobezzia and Leehelea is described and illustrated and ilustrated from female specimens. This new genus includes only one species, Sphaerohelea biestroi n. sp. from northeastern Argentina as a type-species.

Pseudocapillaria (Ichthyocapillaria) maricaensis n. sp. (Nematoda, Capillariidae) and remarks on the helminthological fauna of Liolaemus lutzae Mertens, 1938 (Lacertilia, Iguanidae)

Pseudocapillaria (Ichthyicapillaria) maricaensis n. sp. is described from the small intestine of the lizard, Liolaemus lutzae Meterns, 1938, collected in the State of Rio de Janeiro Brazil. The author compares the new species with Capillaria crotaliRudolphi, 1819) Travassos, 1915, Capillaria freitaslenti Araujo & Gandra, 1941, Pseudocapillaria (Pseudocapillaria) amarali (Freitas & Lent, 1934) Moravec, 1952, Pseudocapillaria (Pseudocapillaria) cezarpintoi (Freitas & Lent, 1934)Moravec, 1952 and Pseudocapillaria (Ichthyocapillaria) murinae (travassos, 1914) Moravec, 1952 previously reported from lizards in Brazil. The nematode Thelandros sceleratus Travassos, 1923 and the trematode paradistomum parvissimum (Travassos, 1918) Travassos, 1919 are for the first time reported from this same host.

Life history studies of heterophyid Trematodes in the neotropical region: Ascocotyle (Leighia) hadra sp.n

The life cycle of Ascocotyle (Leighia) hadra n.sp. was experimentally reproduced, starting from cercariae from naturally infected Littoridina parchappei, collected from Los Ranchos stream, near Mercedes city, Buenos Aires Province, Argentina. Metacercariae were found encysted in the liver and mesentery of experimentally and naturally infected fishes Cnesterodon decemmaculatus and Jenynsia lineata. Adults were obtained experimentally in chicks and mice. The natural host is unknown. The new species is compared with Ascocotyle (Leighia) mcintoshi Price 1936 as described by Leigh, 1974, differing in behavior and morphology of cercarial, metacercarial and adult stages

Análise faunística dos helmintos de pardais (Passer domesticus L., 1758) capturados em Campo Grande, Rio de Janeiro, RJ

Sparrows captured in Campo Grande, Rio de Janeiro, RJ, were examined through necropsy and the helmints found were identified. The prevalence, intensity of infection and the habitat of each helminth species found are showed. An analysis of the helminth fauna using the importance value of the species collected indicated that in the sparrow the dominant species are: Leucochloridium parcum, Tanaisia inopina, Choanotaenia passerina, Dispharynx nasuta and Tetrameres minima; and the co-dominant species are: Echinostoma revolutum, Eumegacetes mediximus and Mediorhynchus papillosus. According to the host specificity were classified as specialist species: L. parcum, T. inopina, C. passerina and T. minima; and as generalist species: E. revolutum, E. medioximus, D. nasuta and M. papillosus. Echinostoma revolutum was found for the first time in P. domesticus. The species E. medioximus , T. minima and D. nasuta were found for the first time in the sparrow in Brazil. The species C. passerina and M. papillosus were found for the first time in Brazil, expanding their distribution to the Neotropical region.

Downeshelea bicornis, a new neotropical predaceous midge from Brazil (Diptera: Ceratopogonidae)

A new Brazilian species of Downeshelea Wirth & Grogan, D. bicornis, is described and illustrated from a male specimen