Spring Stoneflies

Kielstrup Sø, Himmerland, Danmark

Villestrup Å

Ravnkilde ved Rebild Bakker, Jylland, Danmark

Figures 1–8.Prostoia besametsa, scanning electron micrographs, 1 USA, Utah, Monroe Creek, male, epiproct, dorsal view 2 USA, Montana, Gallatin River, male, epiproct, dorsal view 3 USA, South Dakota, Iron Creek, male, epiproct, lateral view 4 USA, South Dakota, Iron Creek, male, epiproct, lateral view 5 USA, Utah, Monroe Creek, male, abdominal terminalia, caudal view 6 USA, South Dakota, Iron Creek, male, abdominal terminalia, ventral view 7 USA, South Dakota, Iron Creek, female, abdominal terminalia, ventral view 8 USA, South Dakota, Iron Creek, female, abdominal terminalia, ventral view.

Washtenaw Co., MI

Kielstrup Sø, Himmerland, Danmark

Villestrup Å

Ravnkilde ved Rebild Bakker, Jylland, Danmark

Figure 41.Distribution map for Prostoia besametsa (circles) and Prostoia completa (squares). The open symbols enclosing the solid symbols refer to the type localities for the two species.

Kielstrup Sø, Himmerland, Danmark

Villestrup Å

Ravnkilde ved Rebild Bakker, Jylland, Danmark

Figure 42.Distribution map for Prostoia hallasi (circles), Prostoia ozarkensis sp. n. (squares), and Prostoia similis (triangles). The open symbols enclosing the solid symbols refer to the type localities for the three species.

Kielstrup Sø, Himmerland, Danmark

Villestrup Å

Ravnkilde ved Rebild Bakker, Jylland, Danmark

Figures 9–16.Prostoia completa, scanning electron micrographs, 9 USA, Wisconsin, Plover River, male, epiproct, dorsal view 10 Canada, Newfoundland, Walsh River, male, epiproct, dorsal view 11 Canada, Newfoundland, Walsh River, male, epiproct, lateral view 12 Canada, Newfoundland, Walsh River, male, epiproct tip, lateral view 13 USA, Virginia, Roanoke River, male, epiproct base, dorsal view 14 USA, Wisconsin, Plover River, male, epiproct tip, dorsal view 15 Canada, Newfoundland, Walsh River, male, epiproct base, lateral view 16 Canada, Newfoundland, Walsh River, female, abdominal terminalia, ventral view.

Kielstrup Sø, Himmerland, Danmark

Villestrup Å

Ravnkilde ved Rebild Bakker, Jylland, Danmark

Figure 41.Distribution map for Prostoia besametsa (circles) and Prostoia completa (squares). The open symbols enclosing the solid symbols refer to the type localities for the two species.

Villestrup Å

Ravnkilde ved Rebild Bakker, Jylland, Danmark

Figure 42.Distribution map for Prostoia hallasi (circles), Prostoia ozarkensis sp. n. (squares), and Prostoia similis (triangles). The open symbols enclosing the solid symbols refer to the type localities for the three species.