A Most Curious Observation

I have just come to notice that I have gone nearly an entire cauliflower/broccoli/cabbage growing season without a sign of cabbage worms. Usually by now those little buggers are wreaking havoc on my cauliflower, broccoli and cabbage plants by eating big holes in the leaves. And, usually by now I am closely inspecting the topside and underside of each leaf looking for the little buggers, cursing because they are making me search for them and then laughing triumphantly when I find one. "Bwaahahaha! I shall name you 'Mushy' and you 'Squooshy' and you 'Clyde'."

I wonder where they are this year?