(date accessed: December 29, 2013).Coccinella septempunctata, the seven-spot ladybird (or, in North America, seven-spotted ladybug or " C-7" ), is the most common ladybird in Europe. “Ladybird beetles: nine-spotted lady beetle (Coccinella novemnotata).” the Xerces Society for Invertebrate Conservation. Wings: Essays on Invertebrate Conservation. The decline of C-9- New York State’s insect. New York Natural Heritage Program Databases. NatureServe Explorer: An online encyclopedia of life. Potential causes and consequences of decreased body size in field populations of Coccinella novemnotata. "Coccinella novemnotata" (On-line), Animal Diversity Web. Method for continuously rearing Coccinella lady beetles (Coleoptera: Coccinellidae). Beckendorf, Leonard Stellwag, Danielle M. Hessler, Louis S., Ginger McNickle, Michael A. The decline of native coccinellids (Coleoptera: Coccinellidae) in the United States and Canada. Journal of the New York Entomological Society, 93: 1-912. The Coccinellidae ( Coleoptera) of America north of Mexico. ![]() “The Lost Ladybug Project.” (date accessed: December 29, 2013). (Pertains to all subsequent fasicle updates as well).Ĭornell University. Flora and Fauna Publications, Gainesville, Florida. Checklist of the Beetles of North and Central America and the West Indies. Further studies on lab rearing and reintroduction are needed.Īrnett, Jr., Ross H., ed. Research NeedsĪdditional research is needed to determine the effects of competition with other coccinellids. If pesticide use cannot be avoided: use chemicals that target only the pest, treat only infested areas, and select chemicals that do not persist. Pesticide use should be avoided when possible. Preservation of farmland would maintain or increase suitable open habitat. Conservation Strategies and Management Practices novemnotata appears to be sensitive to pesticide use (Stephens and Losey 2003). ![]() (2012) found that simply limiting the number of aphids has a significant effect on the C. This may result in higher mortality and lower fecundity (Losey et al. 2007). It appears that competition with other aphid-eating insects, such as the non-native Coccinella septempunctata (seven-spotted lady beetle), may be leading to smaller nine-spotted lady beetles. Between 19, there was a 57% decline in farmed land in New York (Harmon et al. novemnotata represented 19% of the Coccinellidae population in a potato crop. The decline went largely unnoticed until the 1980s.Īgricultural land has been declining in New York since the 1880s resulting is less suitable habitat for many lady beetle species. Another study on Long Island from 1956-1958 found C. novemnotata per 100 stems counted (weekly). Another study in 1971 shows a decline with a maximum of one C. novemnotata made up 13% of the Coccinellidae. There were small studies in the last 100 years that give some indications of the population status. ![]() Long-term TrendsĬoccinella novemnotata was once considered the most common lady beetle in the state. Prior to this discovery, it was assumed to be likely extirpated from the state. The Lost Ladybug Project reported a single known location in New York with 21 nine-spotted lady beetles from an organic farm in Amagansett in 2011 (Cornell University 2013). The decline went largely unnoticed until the 1980s. This species was once considered common throughout the state. As of 2013, there is one known occurrence in New York State on an organic farm on Long Island. Nine-spotted lady beetle was designated New York state's official insect in 1989.
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