Explanation of Names
Hippodamia convergens Guerin, 1842
full complement of 13 spots or only a few. The white lines that converge behind the head are common to all individuals.
Throughout US and western Canada - Map (1)
in part to commercial sales for biological control.
Ranges to South America (Hoffmann and Frodsham 1993, White 1983). - University of Michigan Museum of Zoology
may be abundant in agro-ecosystems (2)
Aphids, also whiteflies and other soft bodied insects.
They can adjust their life cycle according to the availability of aphids. Resident populations in the eastern United States are active throughout spring and summer if aphids are present.
Often found in numbers along lake shores, in mountain canyons, and elsewhere...particularly in the spring and fall (3)
Carnes, E.K. 1912. An explanation of the hibernating habits of Hippodamia convergens. Monthly bulletin (California. State Commission of Horticulture) 1: 177-188.
Douglass, J.R. 1930. Hibernation of the convergent lady beetle, Hippodamia convergens Guer., on a mountain peak in New Mexico. Journal of Economic Entomology , 23: 288.
Lee, R.E., Jr. 1980. Aggregation of lady beetles on the shores of lakes (Coleoptera: Coccinellidae). American Midland Naturalist, 104(2): 295-304. (3)
Fenton, F.A. 1958. Seasonal distribution in Alfalfa of the Convergent Lady Beetle, Hippodamia convergens Guer. Proceedings of the Oklahoma Academy of Science (for 1957) 38: 54-58.
Hamilton, R.M., E.B. Dogan, G.B. Schaalje, and G.M. Booth. 1999. Olfactory response of the lady beetle Hippodamia convergens (Coleoptera: Coccinellidae) to prey related odors, including a scanning electron microscopy study of the antennal sensilla. Environmental Entomology 28: 812-822.
Hawkes, O.A.M. 1926. On the massing of the ladybird, Hippodamia convergens (Coleoptera), in the Yosemite Valley. Proceedings of the General Meetings for Scientific Business of the Zoological Society of London, 1926: 693-705
Rankin, M.A. and S. Rankin. 1980 Some factors affecting presumed migratory flight activity of the convergent ladybeetle, Hippodamia convergens (Coccinellidae: Coleoptera). Biological Bulletin, 158: 356-369.