Weevils associated with Pistia stratiotes L. (Araceae) in the Central Amazon Region, with new records for Argentinorhynchus Brèthes (Coleoptera, Curculionidae)

Authors

  • Wesley Oliveira de Sousa Universidade Federal de Mato Grosso, Instituto de Biociências, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade
  • Germano Henrique Rosado-Neto Universidade Federal do Paraná, Departamento de Zoologia
  • Marinêz Isaac Marques Universidade Federal de Mato Grosso, Instituto de Biociências, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade

Keywords:

aquatic weevils, Erirhininae, sympatric species, water lettuce, biological control

Abstract

Data on the occurrence of ten weevils species associated with Pistia stratiotes L. (Araceae), from Ilha de Marchantaria, Manaus (Amazonas, Brazil) are presented for the first time. During the period from March to August 2005, 809 weevils specimens were sampled on P. stratiotes, distributed across nine species allocated in five genera of Stenopelmini, in addition to one unidentified species in the Cryptorhynchinae. Among the Stenopelmini, Argentinorhynchus breyeri Brèthes, 1910 (N = 665) was the dominant species, with the highest abundance in July (N = 189) and the lowest in August (N = 11), while Ochetina uniformis Pascoe, 1881 (N = 63), Neochetina bruchi Hustache, 1926 (N = 45), Neohydronomus pulchellus Hustache, 1926 (N = 15), Neohydronomus affinis Hustache, 1926 (N = 10), A. squamosus (Hustache, 1926) (N = 5), Neochetina eichhorniae Warner, 1970 (N = 4), A. minimus O'Brien & Wibmer, 1989b (N = 1), and Tanysphiroideus sp. (N = 1) had lower abundances. In addition, the co-occurrences of A. breyeri, A. minimus, and A. squamosus on P. stratiotes were recorded for Brazil and the first records of A. minimus and A. squamosus were observed for the State of Amazonas.

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Published

2009-12-01

How to Cite

Sousa, W. O. de, Rosado-Neto, G. H., & Marques, M. I. (2009). Weevils associated with Pistia stratiotes L. (Araceae) in the Central Amazon Region, with new records for Argentinorhynchus Brèthes (Coleoptera, Curculionidae). Biota Neotropica, 9(4). Retrieved from //www.biotaneotropica.org.br/BN/article/view/591

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Section

Short Communications

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