Solanum-specialist
Guides
Frumenta nundinella
Mottled Twirler
Frumenta nundinella is a gelechiid moth with two generations per year in temperate North America. It is an obligate specialist on Solanum carolinense (horsenettle), with larvae inducing characteristic leaf shelters in the first generation and feeding within fruits in the second generation. The species is notable for inducing parthenocarpic fruit development in its host, creating galls within which larvae complete development. Adults overwinter and emerge to oviposit on new shoot tips in late spring.
Gratiana boliviana
Tropical Soda Apple Leaf Beetle, TSA tortoise beetle
Gratiana boliviana is a tortoise beetle (Chrysomelidae: Cassidinae) native to South America that was introduced to Florida in 2003 as the first biological control agent against tropical soda apple (Solanum viarum), a prickly invasive shrub. The beetle is highly host-specific and has established successfully in Florida, reducing weed density and fruit production through defoliation. Over 250,000 beetles were released across Florida from 2003 to 2011. The beetle cannot complete development on native North American Solanum species or crop plants like eggplant, making it a relatively safe biocontrol choice. Cold sensitivity limits its northward establishment potential.