Stonefly immature, Capnia sp.
Photo: Mark Melton
Capnia lacustra is a flightless species of stonefly only found in Lake Tahoe. It feeds on Chara, or skunkweed, a type of algae. Why do insects become flightless? Loss of wings occurs when insects that do not fly away from their location have better survival and fecundity than those that fly. Flight and the development of flight muscles requires energy and nutrients that could instead be used to produce eggs. In the case of Capnia lacustra,…
Source: Living With Insects Blog