A new species of Anisogomphus Selys, A. yanagisawai sp. nov. (holotype male and paratype specimens) from N. Thailand (Doi Inthanon, ca. 1,400 m a.s.l., Ban Luang, Chiang Mai Prov.), is described and illustrated. This species can apparently be distinguished from the other species of this genus by the morphology of the anal appendages, especially the straight cerci closely disposed to each other ...

In the lakes of the Middle Rio Doce, Minas Gerais (MG), two groups of larval Libellulidae are distinguished by preferences of habitat use: one uses mainly aquatic macrophytes and the other uses the bottom substrate. The goal of this work was to verify if there is a morphological distinction between the two groups of species. Thirteen body measures were taken from the larvae and analyzed. No dif...

1. We observed that the dragonfly species Sympetrum flaveolum, S. striolatum, S. sanguineum, S. meridionale and S. danae were attracted by polished black gravestones in a Hungarian cemetery. 2. The insects showed the same behaviour as at water: (i) they perched persistently in the immediate vicinity of the chosen gravestones and defended their perch against other dragonflies; (ii) flying indivi...