[PDF] Insect Dichotomous Key: Student Investigation Insect Dichotomous Key: Student Investigation You are on a team of ecologists who have collected a variety of insects in the field and brought them back to your office. You may know some of the common names of these insects but you need to identify the specific type of insect and the scientific name of each insect. Your team of Student Dichotomous Key for Insects Graphic Organizer for This Student Dichotomous Key for Insects Graphic Organizer is suitable for 7th - 9th Grade. In this student dichotomous key worksheet, students work in groups to create genus and species names for a list of insects assigned to them. Students then create a key for the new names given to their assigned list of insects.