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Species Hippodamia tredecimpunctata - Thirteen-spotted Lady Beetle

13-spotted Ladybird, 12:15pm - Hippodamia tredecimpunctata Hippodamia tredecimpunctata 13 Spotted Lady - SK - Hippodamia tredecimpunctata Coccinellidae, dorsal - Hippodamia tredecimpunctata Lady Beetle - Hippodamia tredecimpunctata Coccinellidae - Hippodamia tredecimpunctata Ladybug - Hippodamia tredecimpunctata Teneral 13-Spotted Lady Beetle? - Hippodamia tredecimpunctata
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 Coccinellinae
Genus Hippodamia
Species tredecimpunctata (Thirteen-spotted Lady Beetle)
Synonyms and other taxonomic changes
Hippodamia tredecimpunctata (Linnaeus)
Orig. Comb: Coccinella tredecimpunctata Linnaeus 1758
Explanation of Names
tredecimpunctata (L). "thirteen-spotted"
One subspecies in North America: Hippodamia tredecimpunctata tibialis
Length 4.5 to 6.4 mm (1)
Gordon's Figures - This somewhat elongated lady beetle has 13 black spots on its elytra, although some may be fused together.
Holarctic, across N. Amer., except southern tier of states - Map (1)
reed beds, marches (2)
mostly: May-Sept (BG data)
The species Hippodamia tredecimpunctata is holarctic (throughout the northern hemisphere, including Europe and Asia), with a number of subspecies. The nominate subspecies, H. tredecimpunctata tredecimpunctata, is native to Europe. North American beetles belong to subspecies H. tredecimpunctata tibialis.
See Also

It can be distinguished from the Spotted Lady Beetle (Coleomegilla maculata) by the large irregular black spots on its pronotum, in contrast to C. maculata's two separate marks (1)
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.
2.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.