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: