Wednesday, October 3, 2012

EPT Species List for Central Virginia: Photos of Perlodid Stoneflies


(In the above photo -- an Isoperla holochlora "A" nymph, fairly mature.

Perlodid Stoneflies (Springflies and Stripetails [= the Isoperlas])

1. Clioperla clio.  Size: 14-17 mm; Season: Late Fall through Winter.

immature:
fairly mature:
very mature:

2. Diploperla duplicata.  Size: 11-14 mm; Season: Late Fall into Spring.

fairly mature:
very mature:

3. Helopicus subvarians.  Size: 17-20 mm; Season: Winter into Spring.

immature:
mature:

4. Isogenoides hansoni.  Size: 16-24 mm; Season: Fall into Spring.



5. Isoperla dicala.  Size: ~10 mm; Season:  Winter into Spring.


6. Isoperla holochlora light form. Size: 11-14 mm; Season: Spring into Early Summer.



7. Isoperla holochlora dark form  Size: 9-10 mm; Season: Winter and Spring.

immature:
immature:
mature:

8. Isoperla montana (kirchneri) group. Size: ~11 mm; Season: Winter and Spring.

fairly mature:
fairly mature:

9. Isoperla kirchneri (kirchneri group).


10. Isoperla similis.  Size: 12-15 mm; Season: Winter into Spring.



11. Isoperla sp. VA.  Species not yet identified by entomologists.  Size: ??; Season: Winter into Spring.



mature:


12. Isoperla davisi


13. Isoperla orata





14. Isoperla orata (variant form)

immature:
mature:

15. Isoperla lata/pseudolata.


16. Malirekus hastatus.  Size: 15-19 mm; Season: Winter into Spring.



17. Remenus bilobatus.  Size: < 10mm; Season: Spring.

immature:
fairly mature:




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