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Distinction of males of the Lutzomyia intermedia Lutz Neiva, 1912 species complex by ratios between dimensions and by an artificial neural network Diptera Psychodidae, Phlebotominae


Distinction of males of the Lutzomyia intermedia Lutz Neiva, 1912 species complex by ratios between dimensions and by an artificial neural network Diptera Psychodidae, Phlebotominae



Memorias do Instituto Oswaldo Cruz 95.5 (Sep-Oct): 685-688



ISSN/ISBN: 0074-0276

The females of the two species of the Lutzomyia intermedia complex can be easily distinguished, but the males of each species are quite similar. The ratios between the extra-genital and the genital structures of L. neivai are larger than those of L. intermedia s. s., according to ANOVA. An artificial neural network was trained with a set of 300 examples, randomly taken from a sample of 358 individuals. The input vectors consisted of several ratios between some structures of each insect. The model was tested on the remaining 58 insects, 56 of which (96.6%) were correctly identified. This ratio of success can be considered remarkable if one takes into account the difficulty of attaining comparable results using traditional statistical techniques.

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Accession: 037334918

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Related references

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