Dr Timothy J. Gibb is currently a Professor of Entomology at Purdue University. He received his Masters in Entomology at Brigham Young University and later his PhD in Entomology at Kansas State University. Since 2013, Dr Gibb has served as the Director of the Insect Diagnostic Lab at Purdue University. He is the author of five books on entomology, including the first edition of Arthropod Collection and Identification and Contemporary Insect Diagnostics.Dr Christian Osteo is currently a Professor of Entomology at Purdue University. He received his Masters in Entomology and later his PhD in Entomology and Invertebrate Zoology from the University of Nebraska. Since 2000, Dr Osteo has taught courses on introductory entomology, laboratory entomology, and insect identification. From 2004 to 2013, he was the Director of the Purdue University Honours Program. In addition to co-authoring the first edition of Arthropod Collection and Identification, Dr Osteo has written and contributed to numerous scientific publications on entomology and insect identification.