Sunday, October 15, 2017
I KNOW, we aren't supposed to use words like adorable, or cute when describing insects (or any animal) as this anthropomorphizes them, but I'm okay with that.
I find them frequently at the white sheet and mercury vapor light that I put out each evening during the summer months. We have a lot of Burr Oak trees near our crop fields and close to an old pond that dried up. I am assuming the large number of acorn weevils are in direct relation to the amount of oak trees we have.
The female will use the modified tooth-like structures at the end of her snout to chew into the acorn (or depending upon species other tree nuts) and have herself a little meal before depositing a single egg inside.
The adults will emerge in the spring and mate soon after, and then the cycle will start all over again.
Acorn weevils are found throughout most of the United States and
portions of Canada.
There are two types of acorn weevils, the long-snouted variety in the genus Curculio (Pictured here) and the short-snouted variety in the genus Conotrachelus. The short-snouted variety have a little different lifecycle. Instead of the female chewing into fresh acorns and laying an egg, they will use acorns that have already dropped to the ground and have existing cracks.