western round-winged katydid
Amblycorypha parvipennis

Female, Story County, Iowa.
Photograph courtesy of Kenneth C. Shaw, Iowa State University, used by permission.
The many-lobed mass attached near the base of the ovipositor consists of the spermatophore and a nuptial meal (the spermatophylax).
(The large spot on the front wing is a drop of brown liquid of uncertain origin.)