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> > Pentagenia vittigera/Tortopus primus

WillmilneMay 18th, 2009, 4:49 pm
Manitoba Canada

Posts: 19

I have recently uncovered a locale with recorded collection records for both these species and am keen to collect and photograph specimens.Nymphs and adults . I have light traps/emergence traps for the adults but...

Does anyone have suggested substrate/stream location preferences for the nymphs? For P.vittigera all I can find is a preference for clay banks and T.primus nada.

Any help would be deeply appreciated.


GONZOMay 18th, 2009, 9:44 pm
Site Editor
"Bear Swamp," PA

Posts: 1681

Both species apparently burrow in clay banks. Berner (1988) offers some information. He quotes Scott et al. (1959) describing the substrate preferred by Tortopus in the Savannah River:
"The clay substrate inhabited by Tortopus is always firm, nearly always vertical, and usually exposed to swift water."
Berner notes that the burrows enter the bank at right angles forming U-shaped tubes with parallel arms. In the description of Pentagenia, he mentions this:
McCafferty (1975) collected nymphs in hard clay banks approximitely three feet below the water surface in the Wabash River in Indiana. He found the clay banks to be honeycombed by Pentagenia nymphs in the same manner that the banks of the Savannah River are honeycombed by Tortopus.
KonchuMay 19th, 2009, 10:07 am
Site Editor

Posts: 505
If you're not afraid of hard work and possibility of drowning, go for it! It takes some hard digging...
WillmilneMay 19th, 2009, 3:52 pm
Manitoba Canada

Posts: 19
Thank you for the info. that helps a great deal as the locale offers some accessible spots that would match those descriptions.

Konchu- the work is not a problem - drowning might put a serious damper on my summer plans:)))

WillmilneMay 19th, 2009, 6:55 pm
Manitoba Canada

Posts: 19
Thanks for the mention of Berner and McCafferty - I found some info on the FAMU site that will be a great help.


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