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Welcome to the Department of Entomology

For more than 125 years, our faculty members, staff and students have been working to advance the field of insect biology and apply that knowledge to solve problems and improve lives.

As one of the top-ranked entomology programs in the country, our work spans the globe and impacts human lives on many levels, influencing a broad range of disciplines including human and veterinary medicine, farming, biodiversity and genomics.

Entomology News

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Recruitment of Adult Precursor Cells Underlies Limited Repair of the Infected Larval Midgut in Drosophila

Sep 17, 2019

The gut of adult Drosophila contains a pool of intestinal stem cells (ISCs) that regenerate damaged enterocytes. However, larvae lack ISCs and thus cannot undergo this continuous epithelial renewal. Houtz et al. (pp. 412–425) find larval Drosophila circumvent this lack of stem cells through controlled differentiation of adult midgut progenitor cells to mediate partial renewal following enteric bacterial damage. Enteric infection activates cytokine expression in enterocytes (red) that triggers the premature differentiation of adult midgut precursor cells into new, replacement enterocytes (green). A concurrent delay in larval development allows the pool of progenitors to be reconstituted by cells that were not diverted for repair. Cover art by Philip Houtz.

Hive Mind

Sep 9, 2019

With its long tradition of honey bee research, Cornell is a leader in the fight to protect pollinators

Welcome Back!

Aug 29, 2019

Dale Ila Riggs knew the pests were coming for her berries. It was summer 2012, and Riggs watched as the invasive spotted wing Drosophila, a type of fruit fly, descended on The Berry Patch, her 230-acre farm in eastern New York near the Massachusetts border.

Student Job

Aug 22, 2019

The laboratory of Dr. Ann Hajek in the Department of Entomology studies insect pathogenic fungi and nematodes as biological control agents for notorious invasive insect species such as the Asian longhorned beetle, gypsy moth, brown marmorated stink bug, and spotted lanternfly.
Laboratory assistants will care for insect colonies, collect live insects from rearing cages and the field, dissect insects to look for pathogens, and use sterile technique to culture organisms.
The successful candidate(s) will pay strong attention to detail and follow instructions, but also may assist in problem-solving and developing new methods. Must have excellent communication skills and work well with others. Must be willing to work indoors and outdoors, and infrequently lift heavy objects.  Must be physically able to use microscopes.  Preference given to students who have held a Driver’s License for 3 years prior to employment.  (Personal vehicle NOT required.) 
Assistants are scheduled for 6-10 hours per week.  This position requires a commitment to sometimes work independently for on Saturdays and/or Sundays, depending on the experiments that are ongoing. To apply, send a cover letter and resume to both Dr. Eric Clifton ( and David Harris (

Pollinator Network

Bees on Sunflower

Pollinators are essential for maintaining floral diversity and for producing many important agricultural crops that feed residents of New York and other areas of the world. 

Cornell University has a robust network of pollinator research and extension program related to all aspects of pollinator life: Ecology, Evolution, Biodiversity, Behavior, Pesticides, Pests, parasites, and disease, Pollinator management.  Explore the Cornell Pollinator website for information on bee research taking place at Cornell, news and upcoming events, and for a variety of extension materials related to pollinators and beekeeping.

Engaged Entomology

EOA students Mike Wolfin and Zach Cohen have been visiting local schools educating students about different insects and arthropods while Joanna Fisher has been visiting with groups like 4H, Master Gardeners, Master Naturalists, Master Forest Owners, EAB First Detectors trying to teach the public how to identify invasive species like emerald ash borer, hemlock woolly adelgid, and Asian longhorned beetle.

The Naturalist Outreach group has been visiting local classrooms and community groups to talk about the natural history, ecology, and behavior of animals and plants.  They have also created a series of videos teaching the public about an array of issues from pollination to bats to aquatic insects and more.  This group is not only teaching but trying to inspire and engage more people into science.

Insectapalooza is a one day insect fair held annually by the department bringing in families from as far as Michigan each year.  This event reaches thousands of visitors who get hands on experience learning about many different arthropods, their importance and benefits to our community.

Emprire Farm Days and the New York State Fair are two other annual events attended by the Department of Entomology where large groups of people are reached.  

Fruit Fly Trap

Ever wonder how to get rid of those pesky fruit flies in your home?

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