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Williston's Wasp Fly
Sphiximorpha willistoni
Sphiximorpha willistoni (Kahl, 1897), or Williston's wasp fly, is a rare species of syrphid fly found in eastern North America (see map). It is a strong wasp mimic. Hoverflies can remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found on flowers, from which they get both energy-giving nectar and protein-rich pollen. Larvae in this genus are found in sap runs of trees.
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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Every page naming Sphiximorpha willistoni in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 543029.