Scientists studied the internal anatomy that make a female-male role reversal possible in a group of Brazilian cave insects. By Jack Tamisiea The penis has a variety of peculiar shapes and sizes: the ...

WASHINGTON (Reuters) - This may be the role reversal to end all role reversals. Scientists on Thursday described four insect species that dwell in extremely dry caves in Brazil, feed on bat guano and ...

Scientists discovered the first insects with sex-reversed genitalia in Brazilian caves. Yes, by sex reversed we mean that the female insects have penis-like genitalia and the males have vagina-like ...

Despite having sex with males, females of a Japanese stick insect species produce offspring that are genetically identical to themselves. Combined with other evidence, it suggests that the males of ...

Females of a cricket-like insect found in New Zealand consume male ejaculate after sex to give them enough energy for the following six months of parenting, when they don’t eat. The size of the ...