The National Pest Control Association - Tons of useful information about pests and pest control.
Center for Urban & Structural Entomology - A great website with tons of current information on Texas pests.
Texas Imported Fire Ant Research and Managment Project - Any question that you ever had about fireants will be answered here. From any biology to control methods, you can learn it all.
Texas Pest Control Association - Current up to date information about the Texas area pest control providers and pest control news.
Texas A&M University Department of Entomology - If you have a question about an insect, then you should be able to find the answer here. Helps with insect identification, frequently asked questions, insect biology and how to determine insect damage.
AgriLife: Insects in the City - If you live in the City and you have a question about the bug you are looking at, this website deals with just that.
PestWorld for Kids - A great site for kids. Opportunities to learn more about the insects that they are involved with every day.