Preliminary Entomological and Parasitological Studies in Humboldt, Aripuanã, Mato Grosso State, Brazil.

Abstract

The preliminary results are given of studies on the sandfly fauna (Diptera: Psychodidae) in forest surrounding the Humboldt Research Centre, Municipio of Aripuanã, Mato Grosso State, Brazil. A total of 712 sandflies were obtained, including 26 different species: of these, 387 were caught off human bait; 317 from tree-trunks; 4 in a malaise-trap; 3 in rodent baited oil traps; and 1 in a light-trap. Man-biting species were absent or very rare during studies in the dry season (August and September, 1974), but relatively abundant at the end of the rainy season (June, 1975): this suggests a seasonal transmission of leishmaniasis. The species at present known as Lutzomyia anduzei of Floch & Abonnenc (1942) was a major man-biter, this species is an important vector of cutaneous leishmaniasis in North Pará, Brazil, and could be responsible for transmission in Aripuanã. Among a total of 349 female sandflies dissected, promastigote flagellates were found in 2 Lutzomyia yuilli; epimastigote flagellates in 1 L. yuilli; a microsporidian in Psychodopygus (1) complexus; a gregarine, probably Monocystis chagasi, in P. davisi; and a nematode larva in P. complexus. Inoculation of the promastigote flagellates into the skin of hamsters failed to give Leishmania infections: possibly they were developmental stages of some other parasite. Two research workers of Project RADAM acquired cutaneous leishmaniasis in the Humboldt area; and 6 cases of malaria were diagnosed, 3 due to P. falciparum and 3 to P. vivax. Transmission of malaria was shown to be taking place in the camp site itself. Finally, man-biting "black-flies" (Diptera: Simuliidae) were found to be a serious problem, necessitating constant use of insect repellent.

Guide to the Identification and Geographic Distribution of Lutzomyia Sand Flies in Mexico, the West Indies, Central and South America (Diptera:Psychodidae)

“…( 511( as synonym of tuberculata). Lutzomyia tuberculata: Lainson et al 1976a: 57. L6ger et al 1977: 218 (French Guiana.…”

“…Lainson et al 1976a: 57 (Mato Grosso, Brazil). Martins et al 1976b: 498 (6, Peru);1978: 108 (refs., dist.).…”

“…Lutzomyia dendrophyla (or dendrophila): Barretto 1962: 99 (listed). Lainson et al 1976a: 57. Arias & Freitas 1977b.…”

“…189 Flebotomus antunesi Coutinho 1939: 181 (6, Manacapurd, Amazonas, Brazil Lutzomyia antunesi: Barretto 1962: 97 (listed). Lainson et al 1976a: 57. Ldger et al 1977.…”

Dinâmica espaço-temporal de flebotomíneos (Diptera, Psychodidae) do município de Santa Quitéria, área de cerrado do Estado do Maranhão, Brasil

“…No Maranhão foi detectada na ilha de São Luís, nos meses de janeiro e fevereiro, associada com capoeira e domicílio rural. A distribuição de L. complexa está limitada à Bacia Amazônica, incluindo os estados de Rondônia (BIANCHARDI et al, 1982), Mato Grosso (LAINSON et al, 1976) e Pará (FRAIHA et al, 1978). Mais recentemente foram coletados machos e fêmeas, nas estações de estiagem e chuvosa, no município de Paragominas, PA (REBÊLO & OLIVEIRA-PEREIRA, 2001).…”