New species and distributional records of Aleocharinae (Coleoptera, Staphylinidae) from Ontario, Canada, with a checklist of recorded species

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Male: postocular margins straight for a short distance and then narrowed poste- riorly (Fig. 1C); posterior margin of tergite VIII (Fig. 1F) broadly convex; median lobe of

The new spe- cies does have characteristics found in other congeneric spe- cies, such as: the lobe on the inner lateral margin on the male exopod of pleopod 1 and setae on the

Hemibrycon divisorensis is distinguished from all other species of the genus by the presence of a wide black asymmetrical spot covering the base of caudal-fin rays and extending

ACKNOWLEDGEMENTS We are very grateful to Dr. Irina Brake (BMNH) 

correspond to those bearing a neural spine) plus four anterior ones (three fused in the Weberian complex and a free first one), plus the compound caudal cen- trum (PU 1 +U 1

Parancistrus nudiventris , new species, is described and compared with the congener P. The new species has only been recorded from rio Xingu and can be distinguished from

Trichomycterus castroi , a new species of trichomycterid catfish from the Rio Iguaçu of Southeastern Brazil (Teleostei: Siluriformes). Ichthyological Exploration of Freshwaters,