Both the adult and larval stages of this small (3 mm) black beetle are aquatic. The preferred habitat is the surface of stones on the substrate of well-oxygenated flowing water. Other debris and aquatic vegetation is used to a limited extent, particularly by larvae.

 The only known location for this beetle in Kansas is in a spring area within Scott State Park in Scott County.

Optioservus Riffle Beetles are protected by the Kansas Nongame and Endangered Species Conservation Act and administrative regulations applicable thereto. Any time an eligible project is proposed that will impact the species' preferred habitats within its probable range, the project sponsor must contact the Ecological Services Section, Kansas Department of Wildlife, Parks and Tourism, 512 SE 25th Ave., Pratt, Kansas 67124-8174. Department personnel can then advise the project sponsor on permit requirements.

As defined by Kansas Administrative Regulations, critical habitats include those areas documented as currently supporting self-sustaining population(s) of any threatened or endangered species of wildlife as well as those areas determined by the Kansas Department of Wildlife, Parks and Tourism to be essential for the conservation of any threatened or endangered species of wildlife.

 Currently, the following areas are designated critical for Optioservus Riffle Beetles:

 All springs and spring-fed streams that lie within Section 13, T16S, R33W, Scott County. These lands and waters are currently within the boundaries of Scott State Park.