Imagine for a moment that you travel on all fours like other self-respecting quadrupeds. Extend your imagination yet a little more, and with it your body, so that a large dome-shaped shell-like structure extends out to cover you in all directions.

From above, a predator would see only a disk with a snug fit to the ground on all sides. Now shrink dramatically and move into the nearest fast-flowing stream: you are well on your way to becoming a water penny beetle larva. » Continue Reading.

A good friend was in touch; her son was enduring allergic reactions to mosquitos and, like any good parent, she sought solutions. I told her that the most practical, non-toxic way to deal with the problem was to consider a mosquitos’ lifecycle, and interrupt it where it starts.

Mosquitoes begin their lives in eggs laid singly or in rafts, in most cases on the surface of water. We purchase mosquito egg rafts at Saint Michael’s College to run student experiments with the hatching larvae. » Continue Reading.

On early summer nights I sometimes see large, pale green moths with long, twisted tails fluttering near our porch light. Later, I often find them dead on the ground. These beautiful moths are luna moths, named for the Roman goddess of the moon. Each of their four wings has a transparent, moon-shaped eyespot.

The luna moth (Actias luna) is one of the largest species of moths in North America, with a wingspan of three to four inches. It inhabits deciduous forests, where its green wings blend in among the leaves. » Continue Reading.

One afternoon last summer, my partner Rick called me out onto our deck to see a tiny hummingbird. Not just tiny, but the tiniest hummingbird he had ever seen. My curiosity piqued, I walked out and there it was – hovering in front of the bee balm, sipping nectar and beating its wings at an impossible rate. It was a rich rust color and about an inch and a half long. By comparison, the smallest ruby-throated hummingbirds are twice that length. This was truly the most diminutive hummingbird imaginable.

Or was it? » Continue Reading.

It is not too often one hears about a good-news infestation. I’d like to come across a bulletin on a new invasive money-tree that was poised to spread through the region. Granted it would produce in foreign currency, but we could make peace with that situation, I imagine.

A money-tree invasion is unlikely, but some areas will soon be overrun by hordes of insects programmed to eat black flies, mosquitoes and deer flies. Dragonflies and damselflies, carnivorous insects in the order Odonata, date back more than 300 million years. Both kinds of insects are beneficial in that they eat plenty of nasties. Of the estimated 6,000 Odonata species on Earth, about 200 have been identified in our part of the globe. I’ve been told it’s good fortune if one lands on you, but the luck is probably that they terrify biting insects. » Continue Reading.