Reported Resistance Case(s)

Species: cnaphalocrocis medinalis

Order	Family	Common Name(s)	Group	Host
lepidoptera	pyralidae	rice leaffolder moth	AG	rice

Active Ingredient: fipronil

MOA: GABA-gated chloride channel antagonists, Phenylpyrazoles (Fiproles)
Group: PYZ	CAS #: 120068-37-3	Shaugnessy Code: 129121

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G23492	2025	Field Evolved Resistance	India-- Palakkad-- Mannarkkad	Subhagan SR, Pathrose B, Nair S, Chellappan M, Dharaneedharan D. (2025). First report of fipronil resistance in field populations of rice leaf folder, Cnaphalocrocis medinalis: insights into biochemical and molecular mechanisms. . Pest Manag Sci, 81.
G23493	2025	Field Evolved Resistance	India-- Kerala-- Alappuzha	Subhagan SR, Pathrose B, Nair S, Chellappan M, Dharaneedharan. (2025). First report of fipronil resistance in field populations of rice leaf folder, Cnaphalocrocis medinalis: insights into biochemical and molecular mechanisms.. Pest Manag Sci, 81.
G23494	2025	Field Evolved Resistance	India-- Kerala-- Mavelikara	Subhagan SR, Pathrose B, Nair S, Chellappan M, Dharaneedharan D. (2025). First report of fipronil resistance in field populations of rice leaf folder, Cnaphalocrocis medinalis: insights into biochemical and molecular mechanisms.. Pest Manag Sci., 81.
G23495	2025	Field Evolved Resistance	India-- Kerala-- Thrissur	Subhagan SR, Pathrose B, Nair S, Chellappan M, Dharaneedharan D. (2025). First report of fipronil resistance in field populations of rice leaf folder, Cnaphalocrocis medinalis: insights into biochemical and molecular mechanisms.. Pest Manag Sci., 81.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.