Thursday, October 4, 2012

EPT Species List for Central Virginia: Photos of All Other Stoneflies


In the photo above -- the Giant stonefly Pteronarcys californica, the "Giant Salmon Fly," a species that does not occur in the East.  I found this one in the Blackfoot River near Missoula, Montana this summer.

Photos of the Perlid and Perlodid species we find in our streams have been posted in earlier entries.  These are photos of species from the other Plecoptera families.

Capniidae (Small Winter Stoneflies)

1. Allocapnia pgmaea.  Size: ~5-10 mm.  Season: Late Fall through Early Winter.  Included are photos of more than one species.

male:


female:


2. Allocapnia mystica.


3. Paracapnia angulata.  Size: 6-8 mm: Season:  Winter.

fairly mature
mature


Leuctridae (Rolled-winged Stoneflies)

1. Leuctra.  Size: 6-9 mm. Season: Late Fall through Winter (I've also seen some in the Summer, possibly a different genus or species).




Nemouridae (Forestflies)

1. Amphinemura delosa.  Size: 5-8 mm; Season: Spring.

mature

2. Prostoia completa. Size: 5-6 mm; Season: Winter.



3. Ostrocerca truncata?  Size: 6 mm.


4. Soyedina sp.  Size: 6.5-8.5 mm; Season: Winter.




Taeniopterygidae (Large Winter Stoneflies)

1. Strophopteryx fasciata.  Size: 9.5-10 mm; Season: Winter.



2. Taenionema atlanticum.  Size: 6.5-11 mm. Season: Winter.

fairly mature
fully mature

3. Taeniopteryx burksi/maura.  Size: male, 8.7-9.5 mm: female, 10-12 mm; Season: Winter.

immature
fairly mature
fully mature


Chloroperlidae (Green Stoneflies)

1. Alloperla.  Size: not given by Beaty; Season: Winter into Spring.



2. Haploperla brevis.  Size: ~7 mm. Season: Winter into Spring.



3. Sweltsa.  Size: 7-8.5 mm. Season: Late Fall through Winter.

young
fairly mature
mature


Peltoperlidae (Roach-like Stoneflies)

1. Peltoperla. Size: 8-11 mm; Season: Winter and Spring.

mature

2. Tallaperla.  Size: 7-10 mm; Season: Winter and Spring.

mature


Pteronarcyidae (Giant Stoneflies)

1. Pteronarcys biloba.  Size: 35-50 mm; Season: Fall and Winter.

fairly mature
mature

2. Pteronarcys proteus.  Size: 35-50 mm; Season: Fall and Winter.

young
fairly mature

3. Pteronarcys dorsata.  Season: Summer through Fall.




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