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Oral Presentation

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Student Competition

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Student 10-Minute Presentation Competition

Medical, Urban, and Veterinary Entomology

Student Competition

Student

Grad 10-min Competition: MUVE, Insecticides

Effects of over-the-counter insecticidal aerosol products on sociotomy of the pharaoh ant, Monomorium pharaonis (Hymenoptera: Formicidae)

Monday, November 10, 2025

8:12 AM - 8:24 AM Pacific

Location: Oregon Convention Center, Portland Ballroom 252, OCC

Presenting Author(s)

XF

Xingwei Feng (he/him/his)

M.S.
University of California
Corona, California

Co-Author(s)

Dong-Hwan Choe, BCE

University of California
Riverside, California

Co-Author(s)

Chow-Yang Lee, BCE (he/him/his)

Professor & Endowed Chair in Urban Entomology
University of California
Riverside, California

The Pharaoh ant, Monomorium pharaonis (L.), is a widely distributed invasive tramp ant species. Due to their ability to frequently relocate nest sites when disturbed, Pharaoh ants are particularly challenging to manage. This study examined the colony movement patterns of different colony sizes of the Pharaoh ant in response to chemical disturbances caused by varying over-the-counter aerosol insecticide application rates. Three aerosol products, three application rates, and four colony sizes were tested. The exploratory activity of Pharaoh ants, the probability of colony budding induced by aerosol products, and the impact of worker density on the final nest site after budding were evaluated. The effects of aerosol product type, colony size, and insecticide application rate on Pharaoh ant colony movement are discussed.