Add Yahoo as a preferred source to see more of our stories on Google. The female penis of the Neotrogla aurora insect species is seen in an undated handout photo released April 17, 2014.

Girls will be boys and boys will be girls, but a little-known Brazilian insect takes role reversal to a whole new level. The cave-dwelling Neotrogla female sports an impressive ‘penis’, which she uses ...

Scientists have discovered gender-bending female cave insects with "very impressive" penis-type organs which can have sex for up to 70 hours at a time. Females of the neotrogla species insert their ...