Soyedina vallicularia, : Zwick, 1973

Grubbs, Scott A., 2006, Soyedina Alexandria And S. Calcarea (Plecoptera: Nemouridae), New Stonefly Species From The Eastern Nearctic Region And Notes On The Life Cycle Of S. Calcarea., Illiesia 2 (6), pp. 39-49 : 46

Key to males of Soyedina vallicularia , S. alexandria , and S. calcarea

1. Outer paraproct lobe markedly narrowed dorsal to the bulbous base (e.g. Figs. 5‐6 )…….… S. vallicularia Outer paraproct lobe robust in shape and narrowed minimally dorsal to the bulbous base ( Figs. 29‐30 , 34‐35)………………………………………….…2

2. Outer paraproct lobe minimally concave along both anterior and posterior margins; tip nearly parallel‐ sided and straight or slightly concave ( Figs. 29‐30 )…………………………..……...….... S. alexandria

Outer paraproct lobe noticeably concave along both anterior and posterior margins; tip flared both anteriorly and posteriorly and concave ( Figs. 29‐ 30 )…………………………….…………..…... S. calcarea

Figures

Figs. 1−9. Soyedina vallicularia. 1−3. PA: Beaver Co., spring into Traverse Creek. 1. Male, SEM micrograph, dorsal view of epiproct (350x). 2. Male, SEM micrograph, lateral view of left paraproct (200x). 3. Male, lateral view of left paraproct. 4−6. MI: Mason Co., Big South Branch Pere Marquette River. 4. Male, SEM micrograph, dorsal view of epiproct (350x). 5. Male, SEM micrograph, lateral view of left paraproct (200x). 6. Male, lateral view of left paraproct. 7−9. MD: Allegany Co., tributary to Black Sulphur Run. 7. Male, SEM micrograph, dorsal view of epiproct (350x). 8. Male, SEM micrograph, lateral view of right paraproct (200x). 9. Male, lateral view of left paraproct.

Figs. 28−31. Soyedina alexandria, TN: Sumner Co., spring into Liggett Branch, Station Camp Creek. 28. Male, SEM micrograph, dorsal view of epiproct (350x). 29−30. Male, SEM micrographs, lateral view of left paraprocts (200x). 31. Female, ventral view.