don't forget   the basics, Insect: structure and function, new edition

I agree, when I was dping my Ph.D. I enjoyed reading "Insects structure and function" by Chspmsn.

" THE INSECTS, Structure and Function" by RF Chapmann 5th edition, Cambridge University Press is one the best books in Entomology. 

In my PhD comprehensive examination I read this book and enjoyed.

Hi, you can try :The insects: Structure and Function" 5th edition. Or Insect Physiology and Biochemistry 2th edition.

These are Chapman Insect structure and function,

AD. Imms Entomology, Henry Comstock, M. S. Mani, Gilbert and Kurket  16 volumes on various aspects of insects.

I quite like 'The Insects: An Outline of Entomology, 4th Edition' by P.J. Gullan and P.S. Cranston. This book helped me through my Invertebrate Biology module and I still find it a pleasure to read. There is now a 5th edition of the book so that might be worth looking into. 

The insects : an outline of entomology / Penny J. Gullan and Peter S. Cranston ; with illustrations by Karina H. McInnes.

Just an alternative.

a) The Science of Entomology by William S Romoser and John G Stoffolano Jr. 

B) Fundamentals of Entomology by Richard J Elzinga 

Easy to read and understand 

I really enjoyed The Insects: An Outline of Entomology and also Insect-plant biology, but I would like to suggest another book: Ecology of Insect: Concepts and Applications, Speight M.R., Hunter M.D. & Watt A.D. (2008). It was well appreciated during writing my diploma thesis.

Survival Strategies - Cooperation and conflict in Animal Societies by Raghavendra Gadagkar.

This is not a textbook but could always be read at leisure.

While not entomology per se, I really like Norris, R.F., Caswell-Chen, E.P., and M. Kogan. 2003. Concepts in Integrated Pest Management.

Any thoughts on Daly and Doyen's Introduction to Insect Biology and Diversity, 3rd ed. Oxford University Press?  I'm trying to decide upon a text for Entomology 101.  I'm looking at Gullan and Cranston. Daly and Doyen has keys for ID.  I trained with Borrer and DeLong but, 300 bucks for an intro class for majors and non-majors?  What do people think?

I have the same questions each time I teach our basic entomology course (every other year). In my situation my students are Bio majors and are not likely going into entomology. I have ended up ruling out Borror both because of cost and its entire focus is taxonomy . I have ruled out Gullan and Cranston because it does not have much taxonomy. I like the blend of the anatomy/physiology, ecology and the taxonomy that I get with Daly and Doyen's works the best in my situation. I feel that it includes both worlds and my students come away with a critical approach to identification (I add keys to supplement this) as well as the WOW factor of this very successful group of organisms. I will say that as I approach the teaching of the class I always look to see what is out there that is better yet.