When a male cockroach wants to mate with a female cockroach very much, he will scoot his butt toward her, open his wings and offer her a homemade meal — sugars and fats squished out of his tergal gland. As the lovely lady nibbles, the male locks onto her with one penis while another penis delivers a sperm package. But increasingly, cockroach coitus is going really, weirdly wrong, and is contributing to roach populations in some places that are more difficult to vanquish with conventional pesticides. Back in 1993, scientists working at North Carolina State University discovered a trait in the German cockroach, a species that inhabits every continent except Antarctica. It seems we created them by accident, after decades of trying to kill their ancestors with sweet powders and liquids laced with poison.

Source: New York Times May 28, 2022 01:20 UTC