Criorhina verbosa
(Walker, 1849)
Hairy-cheeked Bumble Fly
Pronunciation
How to pronounce Criorhina verbosa: /ˌkraɪoʊˈraɪnə vərˈboʊsə/
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Identification
Distinguished from other Criorhina by the conspicuously hairy cheeks. Separated from true bumblebees (Bombus) by the single pair of wings (Diptera), reduced wing venation with a characteristic spurious , and the presence of large that nearly meet at the top of the in males. Criorhina verbosa may be distinguished from congeneric species by details of facial pile and distribution, though precise differentiating characters require examination.
Images
Appearance
exhibit dense pile (hair) on the gena (cheek region), giving rise to the . The body is robust and bumblebee-like, with coloration and patterning that contribute to its mimicry of Bombus . Wing venation follows the typical syrphid pattern with a spurious present.
Distribution
Documented from North America. Specific range details require further verification from primary sources.
Behavior
are known bumblebee mimics (), gaining protection from through resemblance to stinging Hymenoptera. is characteristic of hoverflies, with hovering capability and rapid directional changes.
Ecological Role
likely contribute to pollination through nectar feeding. Larval is poorly documented but related Criorhina are associated with decaying wood and tree wounds, suggesting a saproxylic role in nutrient cycling.
Human Relevance
No documented direct economic or medical significance. Observations are primarily from natural history enthusiasts and contribute to citizen science datasets.
Similar Taxa
- Bombus (bumblebees)Visual mimicry; distinguished by wing number, venation, and structure
- Other Criorhina speciesShared bumblebee mimicry and general body plan; require examination of facial pile and genitalic characters for separation
More Details
Taxonomic history
Originally described as Milesia verbosa Walker, 1849, later transferred to Criorhina. The Criorhina is classified in subtribe Criorhinina within tribe Milesiini.
Data availability
The has 116 observations on iNaturalist as of data compilation, indicating moderate detectability but limited detailed biological study.

