Tag Archives: Indiana

Bactrurus cellulanus Koenemann & Holsinger

Indiana Groundwater Amphipod (Bactrurus cellulanus)

The Indiana Groundwater Amphipod was described in 2001; it is known only from four specimens that were found in 1962 and 1963 in a groundwater seep stream in the subbasement of Jordan Hall on the campus of the University of Indiana in Bloomington in Indiana, USA.

The species has not been collected since and is likely extinct.



[1] Steven J. Taylor; Matthew L. Niemiller: Biogeography and conservation assessment of Bactrurus groundwater amphipods (Crangonyctidae) in the central and eastern United States. Subterranean Biology 17: 1-29.2016


edited: 16.05.2022

Ochthebius putnamensis Blatchley

Putnam Minute Moss Beetle (Ochthebius putnamensis)  

The Putnam Minute Moss Beetle was described in 1910 based on material that had been sieved from the debris near a spring at a hillside somewhere in Putnam County in Indiana, USA. 

 The beetle is about 0,15 cm long, head and thorax are bronze colored, the elytra are glossy black, the legs are reddish brown. [1]  


The species was apparently never found again since and is thus considered probably extinct, however, given the very small size of the beetle and the fact that the exact type locality is not known, there is a high possibility that it still exists.  


References:  [1] W. S. Blatchley: An illustrated descriptive catalogue of the Coleoptera or beetles (exclusive of the Rhynchophora) known to occur in Indiana. Indianapolis, W. B. Burford, contractor for state printing 1910  


Depiction from: ‘Philip Don Perkins: Aquatic beetles of the family Hydraenidae in the Western Hemisphere: classification, biogeography and inferred phylogeny (Insecta: Coleoptera). Quaestiones Entomologicae 16: 3-554. 1980’  

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edited: 20.03.2018