Understanding, and therefore measuring, factors that determine fitness is a central problem in evolutionary biology. We studied a natural population of Coenagrion puella (Odonata: Zygoptera) over two entire breeding seasons, with over a thousand individuals uniquely marked and genotyped, and all mating events at the rendezvous site recorded. Using a parentage analysis, fitness of individuals in...

Atrocalopteryx fasciata Yang, Hämäläinen & Zhang, spec. nov. (holotype ♂, from China, Yunnan, Dehong, Yingjiang, deposited at Odonata Collection of College of Agriculture and Life Sciences, Dali University, Dali, Yunnan, China) is described and illustrated from the male sex. It is compared with Atrocalopteryx laosica (Fraser, 1933).

Abstract The loss of aquatic biodiversity in tropical streams SE Asia is evident due to increasing anthropogenic activities. Therefore, there a necessity for immediate and feasible conservation plans. Effective planning depends on successful application surrogate groups. However, progress this approach hindered by the paucity relevant reports based cross-taxon congruence analysis. In study, we ...

Four new species of Burmagomphus Williamson, 1907 are described from Southwestern China: B. apricus sp. nov. from Xishuangbanna National Nature Reserve, Menglun Town, Xishuangbanna Dai Autonomous Prefecture, Yunnan Province; B. magnus sp. nov. from Huayudong, Nanxi Town, Hekou County, Hani-Yi Autonomous Prefecture of Honghe, Yunnan Province, B. dentatus sp. nov. from Zhangjiang River in Xiaoqik...

　Heteragrion is the most speciose and complex genus of neotropical Megapodagrionidae, with 47 species and one subspecies, and many of them are poorly defined. To improve the knowledge of the Brazilian species of the genus, 179 specimens of 13 of the 17 described species were examined. Four new species are described in tribute to the 40 thanniversary of the rock band Queen: Heteragrion freddieme...

A new fairyfly species from the Neotropics, Anagrus (Anagrus) amazonensis Triapitsyn, Querino & Feitosa, sp. n., is described and illustrated. Anagrus Haliday is a large genus of Mymaridae (Hymenoptera), which now includes eight species recorded from Brazil. This new species attacks eggs of damselflies (Odonata: Zygoptera).

The tritrophic interaction Argia insipida Hagen in Selys, the Trichogrammatidae egg parasitoid Pseudoligosita longifrangiata (Viggiani) and the host plant Tonina fluviatilis (Eriocaulacea), which is a substrate for egg deposition of A.insipid, was investigated. The study locality was a stream with rapids where macrophytes such as T. fluviatilis grow. Information on aquatic egg parasitoids is sc...