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Family Oedemeridae - False Blister Beetles

Xanthocroa testacea - Xanthochroa testacea Oxacis trirossi Arnett - Oxacis trirossi Red-Necked False Blister Beetle Pollinating Hepatica - Asclera ruficollis Cantharidae?  - Xanthochroa lateralis Oedemerid - Xanthochroina bicolor Asclera excavata Oxacis? - Oxacis oedemerid sp? - Oxycopis mimetica
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 Tenebrionoidea (Fungus, Bark, Darkling and Blister Beetles)
Family Oedemeridae (False Blister Beetles)
Other Common Names
Pollen Feeding Beetles(1)
Synonyms and other taxonomic changes
revised by Arnett (1951)(2)
Explanation of Names
Oedemeridae Latreille 1810
Oedemera: Greek οιδειν 'swell' + μηροσ 'thigh'(3)
3 subfamilies, with ~90 spp. in 18 genera in our area, ~1500 spp. in 115 genera worldwide(4) [500/100 per(5)]; 13 spp. in Canada(6)
Overview of our fauna
Family Oedemeridae
Subfamily Oedemerinae
5-20 mm
Antennae with 11 long filiform, serrate or clavate antennomeres. Tarsal formula 5-5-4. 5-6, 2 connate ventrites. Elongate, pubescent, often brightly colored. Head not abruptly constricted posteriorly. Prothorax without margins, expanded anteriorly, then narrowed, sides rounded.
Key to Florida spp.(1)
widely dist.
Most abundant along the coast and in moist wooded habitats. Adults of some species are nectar and pollen feeders and often found on flowers. They are also found resting on foliage or in moist, rotten logs. Larvae develop in moist, decaying logs, stumps, and roots of hardwoods and conifers, including wharf pilings and driftwood.(7)
Adults take pollen, typically on early spring flowers
some produce toxic defensive chemicals
See Also
Internet References
Oedemeridae of Texas - Mike Quinn, 2016
Works Cited
1.Arnett R.H., Jr. (2000-2005) False blister beetles (Insecta: Coleoptera: Oedemeridae)
2.A revision of the Nearctic Oedemeridae (Coleoptera)
Arnett R.H., Jr. 1951. American Midland Naturalist 45: 257-391.
3.The Century Dictionary: an encyclopedic lexicon of the English language
4.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
5.Order Coleoptera Linnaeus, 1758. In: Zhang Z.-Q. (ed.) Animal biodiversity: An outline of higher-level classification...
Ślipiński S.A., Leschen R.A.B., Lawrence J.F. 2011. Zootaxa 3148: 203–208.
6.The Oedemeridae (Coleoptera) of Atlantic Canada
C.G. Majka & D. Langor. 2011. Journal of the Acadian Entomological Society 7: 1-6.
7.Beetles of Eastern North America
Arthur V. Evans. 2014. Princeton University Press.