Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
This genus contains a single species of minor importance to western anglers, Matriella teresa. It is the only species recognized in this genus for North America. This dark little mayfly was previously placed in Serratella.
Where & when
In 1 records from GBIF, adults of this genus have been collected during July (100%).
In 1 record from GBIF, this genus has been collected at elevation of 3600 ft.