Phobia Support Group
A phobia (from the Greek "fear"), is a strong, persistent fear of situations, objects, activities, or persons. The main symptom of this disorder is the excessive, unreasonable desire to avoid the feared subject. When the fear is beyond one's control, or if the fear is interfering with daily life, then a diagnosis under one of the anxiety disorders can be made.
You are definitely not alone here! I have the exact same thing and have been since very young despite never having had any traumatic experience involving insects etc. Even seeing wasps or bees on TV makes me feel concious and itchy. I will do anything to get away from them, and actually avoid going out in the Summer because of this. I can't even have windows open in my house for fear they may come in!!