Silusa densa

Fenyes, 1909

Silusa densa is a rove beetle in the Staphylinidae, Aleocharinae. Originally described from California in 1909, the was later documented in Alberta, Canada, representing a significant range expansion and first Canadian record. As a member of the Silusa, it belongs to a group of small, often overlooked beetles that are part of the diverse rove beetle fauna of North America.

Silusa densa by no rights reserved, uploaded by Nick Bédard. Used under a CC0 license.

Silusa densa by Reginald Webster, Jan Klimaszewski, Georges Pelletier, Karine Savard. Used under a CC BY 3.0 license.

Pronunciation

How to pronounce Silusa densa: /ˈsɪluːsə ˈdɛnsə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Distribution

Originally known only from California, USA. Subsequently documented from Alberta, Canada, with this record representing the first Canadian occurrence. GBIF records indicate additional Canadian provincial records for the in Alberta, Labrador, New Brunswick, Newfoundland, Ontario, and Quebec, though specific S. densa records require verification.

More Details

Taxonomic History

Silusa densa was described by Fenyes in 1909 based on specimens from California. The remained known only from the type locality region until its rediscovery in Alberta, Canada, documented in a 2002 revision of Nearctic Silusa. This range extension of over 1,500 km northward is notable for a previously considered restricted to the Pacific coast.

Research Context

The Alberta record emerged from a comprehensive revision of Canadian Silusa , which also described one new species (S. langori) and documented significant range expansions for other . The study highlights how poorly collected many small aleocharine rove beetles remain across North America.