Orconectes propinquus was created in 1852.
Phreatogammarus propinquus was created in 1907.
Christine Brereton has written: 'Prediction of Crayfish (Cambarus bartoni, Cambarus robustus, Orconectes propinquus, and Orconectes virilis) presence in acid-sensitive, softwater lakes in and around Killarney Provincial Park'
Orconectes hartfieldi was created in 1992.
Orconectes jeffersoni was created in 1944.
Orconectes incomptus was created in 1972.
Orconectes holti was created in 1980.
Orconectes peruncus was created in 1931.
Orconectes saxatilis was created in 1976.
Orconectes marchandi was created in 1948.
Orconectes wrighti was created in 1948.
Orconectes menae was created in 1933.
Orconectes limosus was created in 1817.