A new species in the Rheocricotopus (R.) effusus group from Canada with a review of the Nearctic species of Rheocricotopus and Parametriocnemus (Chironomidae: Orthocladiinae)

Abstract

Rheocricotopus (Rheocricotopus) reduncusoides sp. n. is described from Bathurst Island, Nunavut, Canada. Its discovery was made while curating and examining specimens deposited by H. V. Danks in 1969 at the Canadian National Collection in Ottawa, Canada. We also report the first Canadian record of Parametriocnemus hamatus (Johannsen, 1934) from Québec, based on previously unsorted material deposited at the Canadian National Collection. In this paper we provide distributional records of the Nearctic species of Rheocricotopus Thienemann and Harnisch and Parametriocnemus Goetghebuer, and present a key to the Nearctic adult males of these genera.

Describing the undiscovered

“…This edition of CHIRONOMUS highlights what our relatively small community is doing to address some of these previously unknown questions. From descriptions of new species (Mouybayed-Breil and Ashe, 2018), new records of genera (Hamerlik and da Silva 2018), previously unknown life stages (Egan and Langton 2018) and species range updates (Namayandeh and Beresford 2018) to notes on the unique oviposition behavior of a midge that parasitizes unionid mussels, there are clearly new and important findings to share. We hope you enjoy learning of these discoveries, and continue to relay the importance of your own findings, not only with us and other colleagues in the scientific community, but with the broader community as well.…”