Most physical descriptions on Troutnut are direct or slightly edited quotes from the original scientific sources describing or updating the species, although there may be errors in copying them to this website. Such descriptions aren't always definitive, because species often turn out to be more variable than the original describers observed. In some cases, only a single specimen was described! However, they are useful starting points.
Source: Eggs Of Western Nearctic Acroneuriinae (Plecoptera: Perlidae)
Egg. Outline oval with short, narrow collar (Fig. 13). Egg length ca. 530 µm, equatorial width ca. 400 µm, collar length ca. 30 µm , width ca. 60 µm. Chorionic surface coarsely punctate in a band ca. 325 µm wide, extending from near collar (Figs. 14, 16) to smooth opercular band surrounding lid. Lid with obscure, irregularly shaped follicle cell impressions, but punctations absent (Fig.). Micropylar row located on lid; orifices raised, canals obscure (Fig. 15).