Geometric perspectives of sexual dimorphism in the wing shape of lepidoptera: The case of Synneuria sp. (lepidoptera: Geometridae)

Hugo A. Benítez, Luis E. Parra, Einer Sepulveda, Maria J. Sanzana

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Abstract

We investigated the sexual dimorphism in wing shape in Synneuria sp., using the tools of geometric morphometries. This species, which has taxonomic problems, has a limited geographic distribution. In the spring and summer of 2006-2007 we collected 63 males and 58 females in farms named "El Guindo (36°50'12"W - 73°01'25"S) and Coyanmahuida" (36°49'28.66"S - 72°44'1.34"W) in the province of Concepción, Biobio Region of Chile. We photographed the right wing of each individual and constructed a photographic matrix in which we digitalized 18 morphological landmarks based on the shape and vein pattern of the wing. A multivariate factorial analysis of wing shape showed significant differences between sexes (F = 4.237; p= <0.05) but not among localities (F = 0.169; p= >0.05), in which the sectorized landmarks indicated large contributions to wing shape in the matrix R #7:0.49945 and #8: 0.46818. The geometric variation demonstrated that the points in the bases of the radial veins were key characters to differentiate between sexes.
Original languageEnglish
Pages (from-to)53-60
Number of pages7
JournalJournal of the Entomological Research Society
Volume13
Issue number1
Publication statusPublished - 2011

Keywords

  • Geometric morphometric
  • Interpopulation
  • Moths
  • Phenotype
  • Sexual shape dimorphism
  • Wing shape

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