Naemia seriata

Naemia seriata, commonly known as the seaside lady beetle, is a large coccinellid beetle native to North America. It is found in coastal areas such as beaches, salt marshes, and bay islands on the Atlantic and Pacific coast. This beetle is light brown, yellow, orange, or red in color, with large black spots, often connected along the sides. The pronotum usually has one large central black spot, which is occasionally split into two spots.[1] The body of this species is elongately oval in shape, and between 4 and 6.7mm in length.[2] The two subspecies can be distinguished by markings on the head, with the head of N. seriata seriata being black, while the head of N. seriata litigiosa has a pale triangular marking. Naemia seriata seriata is primarily distributed across Eastern North America, while N. seriata litigiosa is restricted to the American Southwest.[3]

Naemia seriata
Adult Seaside lady beetle.
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Coleoptera
Family:
Coccinellidae
Genus:
Naemia
Species:
N. seriata
Binomial name
Naemia seriata

The seaside lady beetle may be confused for the spotted pink ladybeetle, Coleomegilla maculata, which is much more common, and is not restricted to coastal areas. The apical pair of spots on the elytra as well as the pronotum markings are merged in N. seriata, and distinctly separate in C. maculata[4].

References
  1. http://www.archive.org/stream/proceedingsofaca03acad#page/177/mode/1up
  2. The Coccinellidae (Coleoptera) of America North of Mexico, Robert D. Gordon. 1985. Journal of the New York Entomological Society, Vol. 93, No. 1.
  3. https://bugguide.net/node/view/140887
  4. Adalia, Field Guide to Ladybugs of the US and Canada
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