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The sculpture of elytra in species from the family Dytiscidae (Insecta: Coleoptera) as a diagnostic feature for the identification of subfossil material

100%

Mazur M. , Kubisz D.

2008

tom nr 78

71-98

Three categories of the elytral sculpture in the dorsal area of 138 central European Dytiscidae species have been distinguished, i.e.: macrosculpture, first-degree microsculpture, and second-degree microsculpture. On the basis of a kind, arrangement, and quantitative proportions of eight sculpture elements (punctures, sulci, clefts, granules, areas, stripes, carinae and folds), 14 types and 39 varieties of the sculpture have been described. Additionally, sexual dimorphism of and seven other types of the sculpture, not related to the sex have been distinguished. Importance at the discussed sculpture features for the identification of the subfossil Dytiscidae remains was stressed. Using the diagnostic features, a key for identification of subfossil Dytiscidae was compiled.