Entomology is the captivating field of studying insects, including their classification, taxonomy, behavior, and ecology. Entomologists use tools like insect books and apps to identify species like beetles, which exhibit diverse forms and roles in ecosystems. Insect identification resources include online platforms and expert forensic entomologists. Insects play vital roles in pollination and decomposition, making entomology crucial for understanding ecosystems. Beetle species, such as tiger beetles, jewel beetles, longhor beetles, ground beetles, stag beetles and leaf beetles, showcase the diversity of insects. Entomology books offer insights for all levels of interest.