Today I saw something very odd: dozens of ladybugs crawling along the top of a recycling bin. Some were the dark red that we normally associate with ladybugs, while others were a pale orange verging on yellow. Strange looking half-formed ladybugs, seemingly crouched in tight balls, adhered themselves along the surface as well. In the midst of it all swarmed long, fat black bugs with orange spotting along their backs. What was going on here? And what was this panoply of ladybug life occurring on a recycling bin in the middle of a college campus?

Two ladybug pupae

When I afterwards looked up ladybugs, I found that I had actually witnessed something pretty cool: the full life cycle of Coccinellidae, known as the ‘ladybug’ in America but the ‘ladybird’ elsewhere in the world. It’s also known as ‘God’s cow,’ the ‘ladyclock,’ or the ‘lady fly.’ There are over five thousand species worldwide, but the name ‘ladybug’ is perhaps most readily synonymous with the image of a small, round red bug with black spots.

The ladybug, as I had seen, has four distinct phases in its life cycle. The life of the ladybug begins in an egg; small clutches hatch after three or four days at which point the larval form of the bug emerges. It may molt three to four times over a period of about twelve days before pupation (i.e., the beetle creates a pupa). Continue reading →