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 ...

The 100-million-year-old remains of an alien-looking female insect — complete with a triangular head and bulging eyes — have been discovered encased in a glob of hardened resin called amber. The tiny ...

Females that bear a striking resemblance to males within their same species are, in some cases, evolving ever-more masculine bodies and behaviors, suggests a new study that may help to explain how ...

For the vast majority of species, the easiest way to tell an animal’s biological sex is to check out its junk. Does its sex organ elongate and stick out sometimes? A male, in most cases. Is it more ...

Washington, USA: 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 ...

Some female stick insects just don’t need males around, ever. They clone themselves, alter their pheromones to stay inconspicuous to unwanted suitors, and when males try to copulate with them, they ...

A genetic biocontrol method which reduces the lifespan of female insects could work as fast as pesticides to reduce populations of disease-spreading mosquitoes and destructive crop pests, according to ...

A pheromone has been discovered that is released by female insects after mating that tells males exactly when they are ready to mate again. Researchers have identified a pheromone released by female ...