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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 103, No. 1, 2008, pp. 85-92
Bioline Code: oc08013
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 103, No. 1, 2008, pp. 85-92

 en Morphological analysis of three populations of Anopheles (Nyssorhynchus) nuneztovari Gabaldón (Diptera: Culicidae) from Colombia
Ramos, Mayury Fajardo; Obando, Ranulfo González; Suárez, Marco Fidel; López, David; Wilkerson, Richard & Sallum, Maria Anice Mureb

Abstract

Based on the results of comparative analyses of 1,039 specimens of several progenies of Anopheles nuneztovari check for this species in other resources from three localities in Colombia, eight costal wing spot patterns were observed. Patterns I and III were the most frequent: 77.96% and 11.36%, respectively. Using the diagnostic characters ratio of the length of the basal dark area of hind tarsomere II/length of hind tarsomere II, ratio of the length of the humeral pale spot/length of the pre-humeral dark spot, and the ratio of the length of the subcostal pale spot/length of the distal sector dark spot (DS-III2/Ta-III2, HP/PHD, SCP/DSD) approximately 5% of the adult females were misidentified as a species of Nyssorhynchus check for this species in other resources , different from An. nuneztovari. Approximately 5% of the specimens showed DS-III2/Ta-III2 ratio less than 0.25 (range 0.21 - 0.24), and among them 3.34% shared a HP/PHD ratio less than 1.50. Consequently, 1.52% of An. nuneztovari individuals can be misidentified as Anopheles oswaldoi check for this species in other resources . In those specimens with the DS-III2/Ta-III2 ratios higher than 0.25, 34.45% displayed SCP/DSD values greater than 0.50 and of these, 3.65% displayed HP/PHD values greater than 1.8. This combination of characters could lead one to misidentify samples of An. nuneztovari as Anopheles rangeli check for this species in other resources . Similarly, 2.43% of the females could be identified erroneously as either Anopheles aquasalis check for this species in other resources or Anopheles benarrochi check for this species in other resources . Individuals with a HP/PHD ratio greater than 2.0, could be misidentified as Anopheles trinkae check for this species in other resources , Anopheles strodei check for this species in other resources or Anopheles evansae check for this species in other resources . A distinct combination of diagnostic characters for An. nuneztovari from Colombia is proposed.

Keywords
intraspecific variation - Anopheles nuneztovari - malaria vectors - taxonomy - Colombia

 
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