Catalog: Oregon State Arthropod Collection   Vol 3(3) 1 

1

Examination and redetermination of selected specimens of Cercyon Leach 1817 
(Coleoptera: Hydrophildae) in the Oregon State Arthropod Collection.

Alyssa Lee Suzumura
Hokkaido University, Sapporo 060-8589 Japan; asuzu5@gmail.com

Cite this work as: 

Suzumura, A. L. 2019. Examination and redetermination of selected specimens of Cercyon (Coleoptera: Hydrophildae) in the Oregon 
State Arthropod Collection. Catalog: Oregon State Arthropod Collection. 3(3) p 1.  
DOI: http://dx.doi.org/10.5399/osu/cat_osac.3.3.4612.

Fifty four specimens of interest belonging to the genus Cercyon were examined during a visit to the 
Oregon State Arthropod Collection in November of 2018.  These belong to 4 distinct species: Cercyon 
luniger, C. fimbriatus, C. littoralis and C. setulosus. Some of the specimens listed below were included in 
a specimen loan to the author (OSAC, 2018; 2018-11-28-001-01). All of the specimens were determined 
or re-determined by Suzumura during her visit.

Specimens were obtained from the determined and undetermined material.  
Specimens examined:

Cercyon fimbriatus Mannerheim,1852
OSAC_0000185038
OSAC_0000185042
OSAC_0000185049
OSAC_0000185052
OSAC_0000185111
OSAC_0000206873
OSAC_0000206879
OSAC_0000206882

OSAC_0000206894
OSAC_0000206934
OSAC_0000209979
OSAC_0000209980
OSAC_0000209981
OSAC_0000209982
OSAC_0000209983
OSAC_0000209984

OSAC_0000209985
OSAC_0000209986
OSAC_0000209987
OSAC_0000209988
OSAC_0000209989
OSAC_0000209990
OSAC_0000210018
OSAC_0000210145

OSAC_0000210146
OSAC_0000210147
OSAC_0000210148
OSAC_0000210149
OSAC_0000210150
OSAC_0000210151
OSAC_0000210152
OSAC_0000210156

Cercyon littoralis (Gyllenhal, 1808) 
OSAC_0000206563
OSAC_0000206564
OSAC_0000206565
OSAC_0001064563
OSAC_0001084561
OSAC_0001084562

Cercyon luniger Mannerheim, 1853
OSAC_0000186121
OSAC_0000186122
OSAC_0000186123
OSAC_0000186124
OSAC_0000186125
OSAC_0001064565
OSAC_0001084564

Cercyon setulosus Sharp, 1884

OSAC_0000063017
OSAC_0000063018
OSAC_0000063019
OSAC_0000063020

References
OSAC. 2018. Ougoing Loans: 2018-11-28-001-01. Catalog: Oregon State Arthropod Collection. 2 (3)  

p. 2. DOI: http://dx.doi.org/10.5399/osu/cat_osac.2.3.4545.