Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Genus Didion

Beetle  - Didion punctatum Beetle  - Didion punctatum Histerid? - Didion punctatum Unknown  - Didion punctatum Scymninae? - Didion longulum Scymninae? - Didion longulum Didion longulum Casey - Didion longulum Didion punctatum (Melsheimer) - Didion punctatum
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 Scymninae
Tribe Scymnini (Dusky Lady Beetles)
Genus Didion
Explanation of Names
Didion Casey 1899
3 spp. in the genus, all in our area
1.3-1.8 mm(1)
"Scymnini with form elongate, oval; less than 2.0mm." "Didion most likely confused with some members of Scymnus, but" . . ."usually has the lateral pronotal margin nearly straight and strongly convergent anteriorly, and has the pronotal base distinctly narrower than the elytral base."(1)
Genus is restricted to NA(1)
uncertain, but possibly spider mites(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.