@inbook {136, title = {A new species of aquatic beetle, Disersus uncus, from Costa Rica (Coleoptera: Elmidae: Larainae)}, booktitle = {Special Issue to the Memory of Retirement of Emeritus Professor Michio Ch{\^u}j{\^o}}, year = {1982}, pages = {185}, publisher = {The Association of the Memorial Issue of Emeritus Professor M. Ch{\^u}j{\^o}, c/o Biological Laboratory, Nagoya Women{\textquoteright}s University}, organization = {The Association of the Memorial Issue of Emeritus Professor M. Ch{\^u}j{\^o}, c/o Biological Laboratory, Nagoya Women{\textquoteright}s University}, address = {Nagoya}, abstract = {

The riffle beetle genus\ Disersus\ is known to occur from Panama throughout the tropical regions of South America; only Panamanian species,\ Disersus longipennis\ Sharp, was previously described from Central America. The new species,\ Disersus uncus,\ the first species\ Disersus\ reported from Costa Rica, is described and the distinguishing morphological characters of the two species now known from Central America are described and illustrated. A key is provided to distinguish the two species.

}, author = {P. J. Spangler and S. Santiago-Fragoso} }