Lutzomyia reducta Feliciangeli et al., 1988, a host of Leishmania amazonensis, sympatric with two other members of the Flaviscutellata complex in southern Amazonas and Rondônia, Brazil (Diptera: Psychodidae)

Memórias do Instituto Oswaldo Cruz

R. A. Freitas¹  T. V. Barrett¹  R. D. Naiff¹ 

[1],Instituto Nacional de Pesquisas da Amazônia Departamento de Ciências da Saúde Manaus,Brasil

关键词: Phlebotominae;    taxonomy;    biogeography;    ecology;    Lytzomyia reducta (new status);    Lytzomyia flaviscutellata;    Lytzomyia olmeca nociva;    Leishmania amazonensis;    Amazônia;    Phlebotominae;    taxonomia;    biogeografia;    ecologia;    Lutzomyia reducta (stat. nov.);    Lutzomyia flaviscutellata;    Lutzomyia olmeca nociva;    Leishmainai amazonensis;    Amazônia;   

DOI  :  10.1590/S0074-02761989000300011

来源: SciELO

【 摘 要 】

A member of the Lutzomyia flaviscutellata complex from Rondônia and southern Amazonas States, Brazil, is so close to the Venezuelan Lutzomyia olmeca recuta Feliciangeli et al., 1988, that it is regarded as belonging to the same species. Since this phlebotomine co-extis with L. olmeca nociva in Brazil, the subspecific status of the former is untenable and is rased to specific rank, as Lutzomyia reducta. The Brazilian material is described and illustrated, and compared with specimens of L. o. nociva and L. flaviscutellata from the same area. Keys to the known taxa of the flaviscutellata complex are presented. Leishmania amazonensis was isolated from one heavily infected specimen of L. reducta, making this the third species of the flaviscutellata complex to be implicated as a vector of this parasite in Brazil. The relative abundance of the three sympatric flaviscutellata complex species varies locally and appears to be related to soil drainage. L. reducta constituted about 25% if all phlebotomines captured in Disney traps at poorly drained and well drained site, but appears not to coloniza areas subject to periodic flooding. L. olmeca nociva was restricted to poorly drained areas not subject to flooding, whereas L. flaviscutellata was ubiquitous L. reducta has never been detected north of the Amazon river in Brazil, but absence of recosrds from western and northwestern Amazonas State may reflect lack of collecting in these areas.

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