Did you know?
Fireflies are not actually flies but, beetles and there are approximately 29 different types living in Canada. Some live on land (terrestrial), some live in water (aquatic) and others are semi-aquatic. They usually appear in the evenings near woods and wet areas. Fireflies lay eggs in the autumn that grow into larva which remain underground or under tree bark for the winter.
You may be seeing more of them this year because according to experts the spring and rain we have received of late has been very beneficial. Those who eat snails, worms and other insects and those who are pollinators have benefited from healthy populations for each diet.
A chemical reaction causes the lower abdomen to give off a yellowish light (bioluminescence – your word for the day!). Th
is is used to communicate and attract a mate. It is believed that most, if not all, species have their own flash pattern. In fact, females of some species are known to mimic the pattern of other firefly species in order to lure males in and then eat them. Yikes! Although drawing attention to themselves can be dangerous, they contain a chemical causing them to taste bad even in young stages. The light alerts those that have tasted them in the past to avoid that particular meal!
Some fireflies don’t flash to communicate. Instead, they use pheromones, a chemical used by many animals for the same purpose.
Researchers believe fireflies are declining due to habitat loss, pesticide use and possibly light pollution.
To help these remarkable creatures and enjoy their evening light show…
- Garden without pesticides.
- Consider adding a water feature without fish. Include plenty of aquatic and semi-aquatic vegetation to offer fireflies places to grow and live.
- If possible, avoid cutting down trees on your property, and maybe plant a few more.
- Add areas of tall grass and other vegetation – maybe in that empty corner of your garden.
- Turning off as many lights as possible is also thought to help fireflies communicate with one another. The less confusing the competition the better!
