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Species Adalia bipunctata - Two-spotted Lady Beetle
Classification Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Coccinelloidea
No Taxon (Coccinellid group)
Family Coccinellidae (Lady Beetles)
Subfamily Coccinellinae
Genus Adalia
Species bipunctata (Two-spotted Lady Beetle)
Synonyms and other taxonomic changes Adalia bipunctata (Linnaeus)
Orig. Comb: Coccinella 2-punctata Linnaeus, 1758 Explanation of Names bipunctata (L). "two-pointed" Size adult length 3.5-5.2 mm (1)Identification Elytral pigmentation for the adult of this species is highly variable. Typical form has orange or red elytra with two black spots, and a black pronotum with white edges. Other rarer forms range from all black to mostly black with red spots to mostly red with black spots, and the number of spots ranges from zero to fourteen. Here are Bugguide submissions which approximate the variations illustrated in Gordon's Fig. 637 g-l, respectively (1):
Other patterns:
Immature stages (left to right: larva, prepupa, pupa)
Range current range: w. US, across s. Can, New England, and a few Midwest records - Map - Lost Ladybug Project (2)
Historical Range - Gordon (1985) (1), Most of US and Canada except southern portion of southern tier of states.
Native to Europe and North America, "Its range in North America seems to be narrowing. Our greatest fear is that it's declining along with Coccinella novemnotata (C-9, the nine-spotted lady beetle) because of the same factors, and that it, too will soon disappear from large areas of its former range." - Danielle Martinez, Cornell U., 2006 Habitat shows a clear preference for shrubs and trees (3)Remarks considered by New York State to be a "Species of Greatest Conservation Need" (SGCN) (4)See Also Spotless forms closely resemble Mulsantina picta, but differ from having 2 white spots on the face instead of 3, and a more tidy pronotal pattern.
May be confused with the larger Harmonia axyridis. However, the center of Harmonia's face (below left) is white, and the center of Adalia's face (below right) is black.
Print References Harmon, J.P., Stephens, E., Losey, J. 2007. The decline of native coccinellids (Coleoptera: Coccinellidae) in the United States and Canada. Journal of Insect Conservation 11: 85-94. AbstractInternet References 6 live adult images - Keith Edkins, UK
presence in North America - Danielle Martinez, Cornell U., 2006
Systema naturae, 10th ed., v.1, p.364 - Linnaeus' original description (in Latin). Works Cited | 1. | The Coccinellidae (Coleoptera) of America North of Mexico
Robert D. Gordon. 1985. Journal of the New York Entomological Society, Vol. 93, No. 1. | |
| 3. | Ecology and behaviour of the ladybird beetles (Coccinellidae).
Hodek, I., H.F. van Emden & A. Honěk (eds). 2012. Blackwell Publishing Ltd., Chichester, UK, xxxvii + 561 pp. | |
Contributed by Beatriz Moisset on 22 September, 2006 - 7:14pm Additional contributions by Hannah Nendick-Mason, Robin McLeod, Chuck Entz, Mike Quinn, Tim Moyer, James Bailey, Abigail Parker, KenW, Edward RudenLast updated 14 June, 2021 - 4:00pm |
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