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Morphological Analysis of Three Populations of Anopheles (Nyssorhynchus) Nuneztovari Gabaldon (Diptera: Culicidae) from Colombia

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Based on the results of comparative analyses of 1,039 specimens of several progenies of Anopheles nuneztovari 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 IIlength of hind tarsomere II, ratio of the length of the humeral pale spotlength of the pre-humeral dark spot, and the ratio of the length of the subcostal pale spotlength of the distal sector dark spot DS-III2Ta-III2, HPPHD, SCPDSD approximately 5 of the adult females were misidentified as a species of Nyssorhynchus, different from An. nuneztovari. Approximately 5 of the specimens showed DS-III2Ta-III2 ratio less than 0.25 range 0.21 - 0.24, and among them 3.34 shared a HPPHD ratio less than 1.50. Consequently, 1.52 of An. nuneztovari individuals can be misidentified as Anopheles oswaldoi. In those specimens with the DS-III2Ta-III2 ratios higher than 0.25, 34.45 displayed SCPDSD values greater than 0.50 and of these, 3.65 displayed HPPHD values greater than 1.8. This combination of characters could lead one to misidentify samples of An. nuneztovari as Anopheles rangeli. Similarly, 2.43 of the females could be identified erroneously as either Anopheles aquasalis or Anopheles benarrochi. Individuals with a HPPHD ratio greater than 2.0, could be misidentified as Anopheles trinkae, Anopheles strodei or Anopheles evansae. A distinct combination of diagnostic characters for An. nuneztovari from Colombia is proposed.

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  • Biology
  • Medicine and Medical Research

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