clicker round-winged katydid
Mating pair, Buncombe County, North Carolina.
The genitalia of the male (left)
and the female (right) are engaged as the male attaches a small
spermatophore (which contains the sperm and will empty into the female's sperm storage organ)
and a larger spermatophylax (which is a nuptial meal that may function to delay the removal of
the spermatophore by the female and to provide material that increases egg production or
offspring survival). [See Gwynne 2001
for possible functions of
the spermatophylax and experiments that test for these functions.]
Photograph by T. G. Forrest, University of North Carolina Asheville; used by permission.