Microdon aurulentus
Fabricius, 1805
Golden-haired Ant Fly
Microdon aurulentus is a of syrphid fly in the Syrphidae. Commonly known as the Golden-haired Fly, this species belongs to the Microdontinae, whose larvae are known to develop within ant colonies. The species was described by Fabricius in 1805. Recent research involving specimen collections in Illinois has contributed to updated distribution records for this species.
Pronunciation
How to pronounce Microdon aurulentus: /ˈmaɪkroʊdɒn ɔːˈruːləntəs/
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Identification
can be distinguished from other syrphid flies by their robust build, broad , and metallic greenish coloration. The Microdon is characterized by larvae that are , which separates it from many other syrphid genera. Distinguished from honey bees and by having only one pair of wings ( Diptera) versus two pairs in Hymenoptera, and by short, stubby rather than long, elbowed antennae.
Distribution
Recorded from Illinois based on recent specimen digitization efforts at the Illinois Natural History Survey. Distribution details otherwise poorly documented in available sources.
Host Associations
Ecological Role
As a member of the Microdontinae, larvae likely function as of ants within colonies. may contribute to pollination, as is common among syrphid flies, though specific observations for this are not documented.
Similar Taxa
- Mallota posticataBoth are robust syrphid flies that can appear in similar ; M. aurulentus has metallic greenish coloration while M. posticata has different color patterning.
- Honey bees (Apis spp.)Both visit flowers and may be mistaken by casual observers; M. aurulentus has only one pair of wings, short stubby , and can hover, while honey bees have two pairs of wings, long elbowed antennae, and do not hover.
More Details
Recent specimen digitization
Microdon aurulentus was among the hover fly specimens identified during a 2023 project at the Illinois Natural History Survey that digitized and identified century-old specimens, leading to updated range records for the in Illinois.