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Genus Discoderus

Discoderus robustus Horn - Discoderus robustus Discoderus aequalis Casey - Discoderus aequalis Discoderus impotens - female 20160926OA01 - Discoderus 20160913 Discoderus Sp - Discoderus Harpalina - Discoderus Harpalina - Discoderus Discoderus pinguis - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Carabidae (Ground Beetles)
Subfamily Harpalinae
Supertribe Harpalitae
Tribe Harpalini
Subtribe Harpalina
Genus Discoderus
A frequent anglicized pronunciation is dis-KOD-er-us with all vowels short and accent is on second syllable. [PWM note]
Synonyms and other taxonomic changes
needs revision(1)
Explanation of Names
Discoderus LeConte 1853. Greek: disco + derus = "circular plate" + "neck", referring to the markedly convex pronotum. [PWM note]
19 spp. in our area, 28 total(1)
1/9/2017: I removed my provisional key to North American Discoderus (last version 2/07/2015b) at both BugGuide & ResearchGate because I felt it was misleading with too many problems in its current state. A better identification key will be developed in conjunction with plans to survey Discoderus species across the United States. - Peter W. Messer
so. Canada to so. Mexico; in our area, all except D. parallelus are restricted to sw. US(2)
Works Cited
1.Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico
Bousquet Y. 2012. ZooKeys 245: 1–1722.
2.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.