The triatominae species of French Guiana (Heteroptera: Reduviidae)

Adult triatomines occasionally fly into artificially lit premises in Amazonia. This can result in Trypanosoma cruzi transmission to humans either by direct contact or via foodstuff contamination, but the frequency of such behaviour has not been quantified. To address this issue, a light-trap was set 45 m above ground in primary rainforest near Manaus, state of Amazonas, Brazil and operated monthly for three consecutive nights over the course of one year (432 trap-hours). The most commonly caught reduviids were triatomines, including 38 Panstrongylus geniculatus, nine Panstrongylus lignarius, three Panstrongylus rufotuberculatus, five Rhodnius robustus, two Rhodnius pictipes, one Rhodnius amazonicus and 17 Eratyrus mucronatus. Males were collected more frequently than females. The only month without any catches was May. Attraction of most of the known local T. cruzi vectors to artificial light sources is common and year-round in the Amazon rainforest, implying that they may often invade premises built near forest edges and thus become involved in disease transmission. Consequently, effective Chagas disease prevention in Amazonia will require integrating entomological surveillance with the currently used epidemiological surveillance

supporting

confidence: 58%

mentioning

confidence: 99%

Attraction of Chagas disease vectors (Triatominae) to artificial light sources in the canopy of primary Amazon rainforest

Cutrim

Barrett

Santos

et al. 2010

“…M. trinidadensis was not collected recently. Nonetheless, its presence in Suriname is entirely possible because a specimen was recently found in French Guiana, less than 200 km from Suriname (Bérenger et al 2009). T. maculata was collected in colonial times, but has not been seen found since.…”

Section: Resultsmentioning

confidence: 99%

“…Haematophagous Triatominae, vectors of Chagas disease, are also relatively unknown in the Guianas and investigations into their diversity and distribution in the three countries are scarce (Lent & Wygodzinsky 1979, Bérenger et al 2009). Lent and Wygodzinsky (1979) mentioned the occurrence of Triatoma maculata (Erichson, 1848), Eratyrus mucronatus Stål, 1859, Pans-trongylus geniculatus (Latreille, 1811), Panstrongylus lignarius (Walker, 1873), Rhodnius pictipes Stål, 1872, Rhodnius prolixus Stål, 1859 and Microtriatoma trinidadensis (Lent, 1951) in Suriname.…”

mentioning

confidence: 99%

Triatominae species of Suriname (Heteroptera: Reduviidae) and their role as vectors of Chagas disease

Hiwat¹

2014

Nine species of Triatominae, representing three tribes and five genera, are currently known in Suriname. An annotated list of the species based on the collections of the Bureau of Public Health (Suriname), the National Zoological Collection Suriname and the National History Museum Leiden (the Netherlands) is provided. Additionally, the results of several years of opportunistic collection in two domestic environments are presented. The most common species are Rhodnius pictipes Stål, 1972, Rhodnius robustus Larrouse, 1972 and Panstrongylus geniculatus (Latreille, 1811). The significance of the species as vectors of Chagas disease in Suriname is discussed.

“…Thus, Rhodnius milesi ( Valente et al 2001 ) is probably a Rhodnius neglectus variant from south-eastern Amazonia, Rhodnius zeledoni ( Jurberg et al 2009 ) closely resembles Rhodnius domesticus , and Rhodnius montenegrensis ( da Rosa et al 2012 ) likely represents one of the R. robustus lineages of Monteiro et al (2003) . Furthermore, some Rhodnius species, such as Rhodnius dalessandroi , Rhodnius paraensis or Rhodnius amazonicus , have seldom been collected; their ecological-evolutionary characteristics and affiliations remain therefore unclear ( Barrett 1991 , Abad-Franch et al 2009 , Bérenger et al 2009 ).…”

mentioning

confidence: 99%

Rhodnius barretti, a new species of Triatominae (Hemiptera: Reduviidae) from western Amazonia

Abad‐Franch

Pavan²,

Jaramillo-O

et al. 2013

Rhodnius barretti , a new triatomine species, is described based on adult specimens collected in rainforest environments within the Napo ecoregion of western Amazonia (Colombia and Ecuador). R. barretti resembles Rhodnius robustus s.l. , but mitochondrial cytochrome b gene sequences reveal that it is a strongly divergent member of the “robustus lineage”, i.e., basal to the clade encompassing Rhodnius nasutus , Rhodnius neglectus , Rhodnius prolixus and five members of the R. robustus species complex. Morphometric analyses also reveal consistent divergence from R. robustus s.l. , including head and, as previously shown, wing shape and the length ratios of some anatomical structures. R. barretti occurs, often at high densities, in Attalea butyracea and Oenocarpus bataua palms. It is strikingly aggressive and adults may invade houses flying from peridomestic palms. R. barretti must therefore be regarded as a potential Trypanosoma cruzi vector in the Napo ecoregion, where Chagas disease is endemic.