Contribution to the genus Sympetrum Newman, 1833 (Odonata, Anisoptera) from extreme SW Romania

Abstract

The paper presents new data on species composition and distribution of the genus Sympetrum in the extreme SW part of Romania. Two species, Sympetrum fonscolombii (Selys, 1840) and Sympetrum striolatum (Charpentier, 1840) are added to those of the literature - Sympetrum sanguineum (Muller, 1764) and Sympetrum meridionale (Selys, 1841) (Cirdei & Bulimar 1965). The sampled area was enlarged with new collecting sites. A brief description of species is given, especially the distinctive characters, including the hamular processes and the vulvar scale. The bifid aspect of the vulvar scale in S. meridionale indicates that the genus Sympetrum has a problem at least of species diagnosability.