New York Natural Heritage Program
Two-spotted Lady Beetle
Adalia bipunctata (Linnaeus, 1758)
Insects

Threats [-]
Agricultural land has been declining in New York since the 1880s resulting is less suitable habitat for lady beetles. Between 1940 and 1997, there was a 57% decline in farmed land in New York (Harmon et al. 2007). Parasites, parasitoids, pathogens, increased cannibalism, insecticide use, transgenic crops, and hybridization with other species are also considered factors that could reducing two-spotted lady beetle population (Martinez 2006, Cornell University 2013).

Conservation Strategies and Management Practices [-]
Preservation of farmland would maintain or increase suitable open habitat. Pesticide use should be avoided when possible. If pesticide use cannot be avoided: use chemicals that target only the pest, treat only infested area, and select chemicals that do not persist.

Research Needs [-]
Additional research is needed to determine the effects of competition with other coccinellids. Further studies on lab rearing and reintroduction are needed. Additional research is needed to determine specific habitat needs.