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For the United States & Canada
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Species Macrosiagon limbata

Wedge-shaped Beetle - Macrosiagon limbata - male  Wedge-shaped Beetle - Macrosiagon limbata - male unidentified Ripiphoridae - Macrosiagon limbata - female  Wedge-shaped Beetle - Macrosiagon limbata - female Beetle? - Macrosiagon limbata cute little beetle - Macrosiagon limbata Macrosiagon limbata - male Macrosiagon - Macrosiagon limbata
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga
No Taxon (Series Cucujiformia)
Superfamily Tenebrionoidea
Family Ripiphoridae (Wedge-shaped Beetles)
Subfamily Ripiphorinae
Genus Macrosiagon
Species limbata (Macrosiagon limbata)
Explanation of Names
Macrosiagon limbata (Fabricius 1792)
5.0-12.0 mm(1)
e. NA (NH-FL to ON-KS-AZ) to S. Amer. - Map (1)(2)(3)(4), mostly ne quarter of the US
Adults on flowers of goatweed (Capraria), elderberry (Sambucus), thoroughwort (Eupatorium), beebalm (Monarda), goldenrod (Solidago)(1), mountain mint ( Pycnanthemum),
Jun-Aug (BG data)
Life Cycle
They go through hypermetamorphosis. The female deposits eggs on flowers frequented by bees. The first instar is a planidum, an active larva capable of climbing on a bee or bumble bee (their hosts). They are transported to the bee nest where they behave as parasitoids. The following instars don't have legs and feed on the bee larvae and stored pollen and nectar.

1. Eggs. 2. Triungulin
Internet References
Works Cited
1.Beetles of Eastern North America
Arthur V. Evans. 2014. Princeton University Press.
2.Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition
Bousquet Y., Bouchard P., Davies A.E., Sikes D.S. 2013. ZooKeys 360: 1–402.
3.Tenebrionoidea of South Carolina
Janet C. Ciegler. 2014. Clemson University.
4.Global Biodiversity Information Facility (GBIF)