The genus Palaeoboreochlus Baranov et Andersen, n. gen. is erected based on P. inornatus Baranov et Andersen, n. sp. described from a male found in Late Eocene Rovno amber. The new genus groups with Boreochlus Edwards in the tribe "Boreochlini".

Three species previously described from the neotropical region are revised and four new species are described: Thienemanniella biobio sp. n. and T. manihuales sp. n. as males and pupae from Chile, T. sancticaroli sp. n. and T ubatuba sp. n. as males, females and immature stages from Brazil. The new Thienemanniella spreta species group is delimited consisting of T. spreta (Roback) sensu Sublette...

A new species of Polypedilum (Uresipedilum) Oyewo & Sæther, 1998, Polypedilum (Uresipedilum) minimum sp. n. is described as male. A key to adult males of the subgenus from China is presented.

Descriptions of the male, female imagos, pupa and larva are given for Bilyjomyia parallela n. sp. collected from Japan. This is the third known species belonging to the genus Bilyjomyia. Keys to species of the genus are provided.

Immature stages and adult female of Rheotanytarsus lamellatus Reiss are described for the first time, and the male is redescribed, diagnosed and compared with R. meridionalis (Johannsen). Both species are reported for the first time from Argentina. Keys to South American male adults and pupae are given.

Benthic communities are highly relevant in the study of aquatic ecosystems, both for their role in the functioning of the ecosystem and also as markers or indicators of paleo-conditions. Their distribution, as in other communities, is conditioned by abiotic and biotic factors and to their interactions, which determine the structure of the community that is established. The aim of this study was...

This study was carried out at the Biguás and Polegar lakes, both small environments but at different successional stages. The main objective was to characterize the macroinvertebrate community associated to the aquatic macrophyte stand in each lake in order for this community, the environmental conditions and their water quality to interact. The samples were taken in 2003. The abiotic variables...

UNLABELLED Nearly thirty-five years have passed since Hackman published his "Check list of the Finnish Diptera" (1980). The number of true flies (Diptera) known from Finland has increased by more than two thousand species since then. At the same time, hundreds of erroneous records have been recognized and purged from the checklist. ZooKeys issue 441 provides a new checklist of the Diptera speci...