INTRODUCTION: This paper reports, for the first time, the presence of the Eratyrus mucronatus species in the State of Rondonia, Brazil. METHODS: These specimens were caught by chance in the forest and later they were collected using luminous traps. RESULTS: After finding these specimens, the number of the Triatominae genera in Rondonia rose to four, while its species rose to seven. CONCLUSIONS: Complimentary studies will be conducted in order to allow for clearer understanding the ecology of this arthropod, its possible role in transmitting Chagas' disease and its current geographical distribution.INTRODUÇÃO: O presente comunicado relata pela primeira vez a ocorrência da espécie Eratyrus mucronatus, no Estado de Rondônia. MÉTODOS: Os espécimes foram coletados ao acaso na mata e depois com a ajuda de armadilhas luminosas. RESULTADOS: Com o encontro dos espécimes, o registro de gêneros de triatomíneos em Rondônia passa para quatro e o de espécies para sete. CONCLUSÕES: Estudos complementares serão realizados para compreender melhor a ecologia do artrópodo, seu eventual papel da transmissão da doença de Chagas e sua real distribuição geográfica

CAMARGO, Luís Marcelo Aranha

MENEGUETTI, Dionatas Ulises de Oliveira

ROSA, Renato Moreira

TREVISAN, Olzeno

INTRODUCTION: This paper reports, for the first time, the presence of the Eratyrus mucronatus species in the State of Rondonia, Brazil. METHODS: These specimens were caught by chance in the forest and later they were collected using luminous traps. RESULTS: After finding these specimens, the number of the Triatominae genera in Rondonia rose to four, while its species rose to seven. CONCLUSIONS: Complimentary studies will be conducted in order to allow for clearer understanding the ecology of this arthropod, its possible role in transmitting Chagas' disease and its current geographical distribution.</jats:p

Dionatas Ulises de Oliveira Meneguetti

Olzeno Trevisan

Renato Moreira Rosa

Luís Marcelo Aranha Camargo

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Revista da Sociedade Brasileira de Medicina Tropical

First report of Eratyrus mucronatus, Stal, 1859, (Hemiptera, Reduviidae, Triatominae), in the State of Rondônia, Brazil

RCAAP - Repositório Científico de Acesso Aberto de Portugal

Primeiro relato de ocorrência da espécie Eratyrus mucronatus, Stal, 1859, (Hemiptera, Reduviidae, Triatominae), no Estado de Rondônia

Universidade de São Paulo

Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP)

511
Revista da Sociedade Brasileira de Medicina Tropical 44(4):511-512, jul-ago, 2011
 Communication/Comunicação
1. Department of Health, Faculty of Education and the Environment, Ariquemes, 
RO, Brazil. 2. Department of Entomology, Executive Planning Commission of Cocoa 
Farming, Experimental Station, Ouro Preto do Oeste, RO, Brazil. 3. Department of 
Genetics and Toxicology, Lutheran University of Brazil, Canoas, RS, Brazil. 
4. Department of Tropical Medicine, Institute of Biomedical Sciences V, University 
of São Paulo, Monte Negro, RO, Brazil. 5. Department of Medicine, São Lucas Faculty, 
Porto Velho, RO, Brazil.
Address to: Esp. Dionatas Ulises de Oliveira Meneguetti. Depto Saúde/FAEMA. 
Av. Machadinho 4349, Setor 06, 76873-630 Ariquemes, RO, Brazil.
Phone: 55 69 3536-6600.
e-mail: dionatasmeneguetti@hotmail.com
Received in 24/07/2010
Accepted in 11/08/2010
The triatominae, commonly known as kissing bugs, are insects 
widely known by the rural populations of many regions of Brazil. 
Featuring variable sizes and colors, they are often mistaken for 
Reduviidae (Assassin bugs). These insects are widely spread 
throughout the Americas and are found from the South of the United 
States through the South of Argentina. They are important, as they 
may transmit Southern American trypanosomiasis, which is also 
called Chagas’ disease1.
Although the first specie (Cimex rubrofasciatus, and ultimately 
Triatoma rubrofasciate De Geer, 1773) was described at the end of 
the 18th Century, human contact of this insect occurred a lot earlier2,3.
The first acknowledged report on the conformation and behavior 
of the genus Triatoma dates from 1590 and was written by the priest 
Reginaldo de Lizaárraga when he was making a trip to inspect the 
convents of Peru and Chile4. Darwin also found these insects on 
a trip to South America on board of the H.M.S. Beagle in 18354,5.
Worldwide, 141 species belonging to 18 genera are known. 
In Brazil, 60 species belonging to 8 genera are acknowledged 
(Table 1)5.  In the Amazonian countries, 24 species belonging to 8 genera 
are acknowledged6. Moreover, in the Brazilian Amazon, at least 18 species 
of  sylvan triatominae belonging to 8 genera have been identified, of 
which 10 are related to infection by the flagellate Trypanosoma cruzi7.
First report of Eratyrus mucronatus, Stal, 1859, (Hemiptera, Reduviidae, 
Triatominae), in the State of Rondônia, Brazil
Primeiro relato de ocorrência da espécie Eratyrus mucronatus, Stal, 1859, (Hemiptera, 
Reduviidae, Triatominae), no Estado de Rondônia
Dionatas Ulises de Oliveira Meneguetti¹, Olzeno Trevisan², Renato Moreira Rosa³ and Luís Marcelo 
Aranha Camargo4,5
ABSTRACT
Introduction: This paper reports, for the first time, the presence of the 
Eratyrus mucronatus species in the State of Rondonia, Brazil. Methods: These 
specimens were caught by chance in the forest and later they were collected 
using luminous traps. Results: After finding these specimens, the number 
of the Triatominae genera in Rondonia rose to four, while its species rose to 
seven. Conclusions: Complimentary studies will be conducted in order to 
allow for clearer understanding the ecology of this arthropod, its possible 
role in transmitting Chagas’ disease and its current geographical distribution.
Keywords: Triatominae. Eratyrus mucronatus. Rondonia. 
RESUMO
Introdução: O presente comunicado relata pela primeira vez a ocorrência 
da espécie Eratyrus mucronatus, no Estado de Rondônia. Métodos: Os 
espécimes foram coletados ao acaso na mata e depois com a ajuda de 
armadilhas luminosas. Resultados: Com o encontro dos espécimes, o 
registro de gêneros de triatomíneos em Rondônia passa para quatro e o de 
espécies para sete. Conclusões: Estudos complementares serão realizados 
para compreender melhor a ecologia do artrópodo, seu eventual papel da 
transmissão da doença de Chagas e sua real distribuição geográfica.
Palavras-chaves: Triatomíneos. Eratyrus mucronatus. Rondônia.
TABLE 1 - Current systematic classification of the subfamily Triatominae 
identified in Brazil.
Subfamily Genus Species (n)
Triatominae Alberprosenia 1
 Belminus 1
 Microtriatoma 2
 Cavernicola 2
 Rhodnius 11
 Eratyrus 2
 Panstrongylus 12
 Triatoma 29
Total  60
In Rondonia, the presence of six species belonging to three genera 
has been reported. Rhodnius robustus, Rhodnius prolixus, Rhodnius 
pictipes, Rhodnius milesi, Panstrongylus geniculatus and only one report 
on Triatoma rubrovaria6. However, this report of T. rubrovaria was 
possibly due to taxonomic misclassification, or resulted from an 
imported specimen, since it is native to Uruguay3 and the State of 
Rio Grande do Sul, Brazil5.
The genus Eratyrus has morphological characteristics that 
resemble the genus Triatoma with antennal tubercles located at the 
middle third of the anteocular segment; however, it presents spines 
and acute pronotum posterior lobe angles. This genus comprises only 
two species in the world, Eratyrus mucronatus and Eratyrus cuspidatus, 
and only the species Eratyrus mucronatus3,5 has been found in Brazil.
The Eratyrus mucronatus species has been reported in the 
Brazilian States of Amazonas, Para, Maranhão, Goiás, and Mato 
Grosso, and in neighboring countries, including Colombia, Bolivia, 
http://dx.doi.org/10.1590/S0037-86822011000400022 
512
Meneguetti DUO et al - First report of Eratyrus mucronatus, in the State of Rondônia, Brazil
Ecuador, Guiana, French Guiana, Suriname, and Venezuela. In the 
State of Rondonia, it had not been identified before5,6.
This species has been found naturally infected by Trypanosoma 
cruzi, usually in sylvatic mammal nests in palm trees8, and has also 
been associated with Carvenicola pilosa9.
It is a species that adapts easily to stable artificial ecotones9 and 
the intradomiciliary presence of E. mucronatus infected by T. cruzi 
has been occasionally found in Bolivia10,11.
This species was first reported in the municipality of Ouro Preto 
do Oeste, State of Rondonia, Brazil, and was found by chance along a 
nature trail in a reserve of the CEPLAC -Comissão Executiva do Plano 
da Lavoura Cacaueira (Executive Planning Commission of Cocoa 
Farming) (S 10º 42’49”, W 62º 13’31”) on November 14th, 2009.
Later, four luminous traps, two Shannon and two CDC types, 
were set up on December 11th, 12th, and 13th of 2009, and two more 
E. mucronatus species samples were caught, possibly attracted by the 
light of a CDC-type trap, thus proving that the sylvan triatomine 
species is also present in the State of Rondonia. This increases the 
number of species to seven, while the number of triatomine genera 
that have been reported in the state increased to four.
The captured triatominae were forwarded to the Laboratory of 
Entomology of CEPLAC, where they were identified by their external 
morphological conformations using a dichotomic key developed by 
Lent & Wygodzinsky, 19793.
The Eratyrus mucronatus species (Figure 1) features the following 
characteristics: anterior lobe of the point 1 + 1, strong disc-shaped 
spines, humeral angle at the point are clearly spiny, corium with a 
relatively small subapical redish spot, which does not anteriorly reach 
the transversal nervure level, free portion of the convex vesica on the 
apex when viewed laterally2,5.
The presence of more than one triatominae species in the State 
of Rondonia demonstrates that the biodiversity of these insects 
may have been underestimated and that it is important to conduct 
further studies regarding triatominae fauna and their distribution 
throughout the state, since they are vectors of Chagas’ disease and 
could eventually jeopardize the health of the local population.
FIgURE 1 - Eratyrus mucronatus species found in the 
municipality of Ouro Preto do Oeste, State of Rondonia, 
Brazil. 
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The authors declare that there are no conflicts of interest.
CONFLICT OF INTEREST
REFERENCES
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de Chagas: Textos de apoio. Brasília: Ministério da Saúde. Superintendência de 
Campanhas de Saúde Pública; 1989. p. 5.
2. Perfetti DJC. Triatominae de Venezuela: distribución Geográfica, aspectos 
taxonómicos, biológicos e importancia médica. [Doctor´s Theses]. [Coro]: 
Tecana American University; 2007. p. 11.
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Lent H, editors. Atlas of Chagas’ Disease Vectors in the Americas. Rio de Janeiro: 
Editora Fundação Oswaldo Cruz; 1998. Vol II. p. 561-619.


INTRODUCTION: This paper reports, for the first time, the presence of the Eratyrus mucronatus species in the State of Rondonia, Brazil. METHODS: These specimens were caught by chance in the forest and later they were collected using luminous traps. RESULTS: After finding these specimens, the number of the Triatominae genera in Rondonia rose to four, while its species rose to seven. CONCLUSIONS: Complimentary studies will be conducted in order to allow for clearer understanding the ecology of this arthropod, its possible role in transmitting Chagas' disease and its current geographical distribution

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Primeiro relato de ocorrência da espécie Eratyrus mucronatus, Stal, 1859, (Hemiptera, Reduviidae, Triatominae), no Estado de Rondônia

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