M.C.
Hmm, I guess his fear is due to not understanding the insects? My kids made pets out of everything small and living. My daughter at age 2 requested a bug theme b'day. It was easy to do, but not what I'd dreamed I would ever do for my "princess". At the age of 18 months she came walking from my tulip bed carrying a green snake like it was the sweetest thing she'd ever seen....My advice is certainly not based on my experience but I would probably watch some Disney type bug theme movies. Buy some rubber or plastic bugs. Get a mason jar, punch holes in the lid and go on a bug hunt. (we actually did that one as an activity for the 2ND b'day party). Go to the library and check out a book on insects. Talk about the good things that the bugs do. Then maybe just try to be understanding of his fears, while talking him through it? Good luck.