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Subfamily Scymninae

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Adventive lady beetles (Coleoptera: Coccinellidae) in the Canadian Maritime Provinces...
By Hoebeke E.R., Wheeler A.G.
Entomological News 107: 281-290, 1996
Full title: Adventive lady beetles (Coleoptera: Coccinellidae) in the Canadian Maritime Provinces, with new eastern US records of Harmonia quadripunctata

Full text

The Coccinellidae (Coleoptera) of the Maritime Provinces of Canada: new records, biogeographic notes, and conservation concerns
By Majka C.G., McCorquodale D.B.
Zootaxa 1154: 49–68, 2006

Ladybird beetles (Coleoptera: Coccinellidae) recently immigrant to Florida
By Thomas M.C., Blanchard O.J.
Florida Dept. Agric. & Consumer Services Division of Plant Industry, Entomology Circular Number 428. 5 pp., 2013

An annotated checklist of the lady beetles (Coleoptera: Coccinellidae) of Iowa, U.S.A.
By Hesler L.S.
Insecta Mundi 0091: 1-10, 2009

Field guide to recently introduced species of Coccinellidae (Coleoptera) in North America
By Robert Gordon and Natalia Vandenberg
Proceedings of the Entomological Society of Washington, 1991
Full citation:
Gordon, R., and Vandenberg, N. 1991. Field guide to recently introduced species of Coccinellidae (Coleoptera) in North America, with a revised key to North American genera of Coccinellini. Proceedings of the Entomological Society of Washington 93:845-864.

Available online: http://biostor.org/reference/56473

Ladybird Beetles (Coleoptera: Coccinellidae) of the Atlantic Maritime Ecozone
By Majka C.G., McCorquodale D.B.
NRC Research Press. Ottawa, Ontario, 2010
In: Assessment of Species Diversity in the Atlantic Maritime Ecozone. Edited by: McAlpine D.F., and Smith I.M. NRC Research Press. Ottawa, Ontario. pp. 439-452.
Full text

Studies in Coccinellidae
By George H. Horn
Transactions of the American Entomological Society, vol. 22, 1895
Online: http://entomology.lsu.edu/lsam/horn/Horn255.pdf

Concentrates on Tribe Scymnini, with keys, descriptions, and external dorsal figures of the insects.

Limitations:
- Taxonomy outdated
- No figures of appendages or internal anatomy.

What makes up for limitations:
- More-detailed keys and descriptions and more dorsal figures of Tribe Scymnini species than in Gordon's 1985 "The Coccinellidae (Coleoptera) of America North of Mexico."(1)
- Available free online, unlike Gordon's 1976 "The Scymnini (Coleoptera

Ladybugs of Alberta
By John Acorn
University of Alberta Press, 169 pages, 2007
-states that it is the first field guide on Ladybugs of any region of North America...
-covers 75 species found in Alberta, many of which are also widespread across the continent
-Colour plates at beginning of book illustrated by author are very useful, often showing variation within a species
-While it could have been edited rather more tightly, I still find this book to be very useful and It has helped me ID quite a few species in a region more than a thousand miles away...And while the author gets a little deeply into the debate of whether or not "invasive", exotic" or otherwise imported species are useful, beneficial, harmful, etc, this book still has loads of useful information, including lots of easily readable stuff on natural history, collecting techniques and so on...I would give it an enthusiastic "two thumbs up"!

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