Opuntia (prickly-pear)
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1b. Swelling or necrotic area on segment (pad)...2
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2b. Larva in slight swelling, affected area sometimes yellow...Neolasioptera sp. and "Mayetiola" spp.
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"Mayetiola" spp. Three separate species have been briefly mentioned and tentatively identified as belonging to this genus: orange larvae on O. lindheimeri in Texas; orange larvae on O. tomentosa from Cuernavaca, Mexico; and larvae from O. tomentosa near Mexico City. The specimens appear to be lost. Ref.: Mann (1969)
- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©