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Species Subcoccinella vigintiquatuorpunctata - Alfalfa Lady Beetle

Ladybug (or Look-alike?) ID Request - Subcoccinella vigintiquatuorpunctata Red Beetle with Black Spots - Subcoccinella vigintiquatuorpunctata Red Beetle with Black Spots - Subcoccinella vigintiquatuorpunctata Red Beetle with Black Spots - Subcoccinella vigintiquatuorpunctata lady beetle, what species? - Subcoccinella vigintiquatuorpunctata Alfalfa Lady Beetle? - Subcoccinella vigintiquatuorpunctata Lady beetle - Subcoccinella vigintiquatuorpunctata Subcoccinella vigintiquatuorpunctata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Coccinelloidea
No Taxon (Coccinellid group)
Family Coccinellidae (Lady Beetles)
Subfamily Epilachninae (Plant-eating Lady Beetles)
Genus Subcoccinella
Species vigintiquatuorpunctata (Alfalfa Lady Beetle)
Other Common Names
Twenty-four Spotted Lady Beetle; European alfalfa beetle (1)
Synonyms and other taxonomic changes
Subcoccinella vigintiquatuorpunctata (Linnaeus)
Orig. Comb: Coccinella 24-punctata Linnaeus 1758
Explanation of Names
vigintiquatuorpunctata (L). '24-spotted' (refers to the maximum number of spots on the elytra)
Size
3.5-4.4 mm (2)
Identification

Gordon's figures - Color yellowish red; elytron with varying number of black spots (2)
Dorsum covered with fine recumbent hairs, rather opaque. May appear to have a silvery sheen. Pale yellow to orange, with 0-12 black spots on each elytron (wing cover), typically arranged in 4 transverse, curved rows. Some spots may fuse, especially in the median row.
Range
native to Eurasia, adventive and now widespread(?) in N. Amer.
first US record from Pennsylvania in 1972 (1), mostly limited to OH-NJ as of 1985 Map (2), south to MD and west to MO by 1993. (1)
Habitat
Meadows and other open habitats. found mainly on bouncing bet (Saponaria officinalis L., Caryophyllaceae) along railroad rights-of-way (1)
Season
mostly: Apr-Aug (BG data)
Food
broad host range includes more than 70 plant species, but Caryophyllaceae and Fabaceae are favored; it's a pest of alfalfa (Medicago sativa L.). (1)
See Also

The small size and oval form distinguish this sp. from Epilachna varivestis (> 6 mm) and E. borealis (>7 mm) which occur in the same geographic region.(2) The row of basal spots on S. vigintiquatuorpunctata appears to always curve upward, where as for Epilachna the basal row appears to curve downward or at best uncurved.
Print References
Wheeler, A.G. Jr. and T.J. Henry. 1981. Seasonal history and habits of the European alfalfa beetle, Subcoccinella vigintiquatuorpunctata (L.) (Coleoptera: Coccinellidae). The Coleopterists Bulletin. 35(2): 197-203. JSTOR
Works Cited
1.Subcoccinella vigintiquatuorpunctata (L.), first Virginia record and new North American host of an adventive lady beetle...
Wheeler, A.G. Jr. 1993. Banisteria (2): 22-24.
2.The Coccinellidae (Coleoptera) of America North of Mexico
Robert D. Gordon. 1985. Journal of the New York Entomological Society, Vol. 93, No. 1.