Here is where we found our information:
Center for Insect Science Education Outreach - University of Arizona http://insected.arizona.edu/mealinfo.htm
Iowa Insect Information Notes - Iowa State University Department of Etymology http://www.ipm.iastate.edu/ipm/iiin/mealworm.html
AnswerBag - Can mealworms hear? http://www.answerbag.com/q_view/2084424#ixzz1n8rpXCOO
Answer Bag - Do mealworms have eyes?
Yahoo Answers - How does a mealworm breathe? http://answers.yahoo.com/question/index?qid=20070205223732AAxlqf0
Schaffer, D. (2005). Mealworms: Life Cycles. Mankato, MN: Bridgeston Books.