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Species Macrosiagon limbata

Wedge-shaped Beetle - Macrosiagon limbata - female  Wedge-shaped Beetle - Macrosiagon limbata - male small reddish wasp? - Macrosiagon limbata Ripiphoridae triungulins - Macrosiagon limbata Macrosiagon - Macrosiagon limbata - male Macrosiagon limbata  Female? - Macrosiagon limbata Macrosiagon limbata Macrosiagon limbata? - Macrosiagon limbata
Classification
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 Ripiphoridae (Wedge-shaped Beetles)
Subfamily Ripiphorinae
Genus Macrosiagon
Species limbata (Macrosiagon limbata)
Explanation of Names
Macrosiagon limbata (Fabricius 1792)
Size
5.0-12.0 mm(1)
Range
e. NA (NH-FL to ON-KS-AZ) to S. America(1)(2)(3)
Habitat
Adults on flowers of goatweed (Capraria), elderberry (Sambucus), thoroughwort (Eupatorium), beebalm (Monarda), goldenrod (Solidago)(1), mountain mint ( Pycnanthemum),
Season
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.