Criorhina verbosa

(Walker, 1849)

Hairy-cheeked Bumble Fly

Criorhina verbosa is a of hoverfly ( Syrphidae) commonly known as the Hairy-cheeked Bumble Fly. It belongs to the tribe Milesiini and is part of a whose members are notable bumblebee mimics. The species was first described by Francis Walker in 1849 under the basionym Milesia verbosa.

Criorhina verbosa by (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block. Used under a CC-BY license.Criorhina verbosa by Nick Block. Used under a CC BY 4.0 license.Annual report of the State Entomologist of Minnesota to the Governor for the year .. (1905) (19180067480) by Internet Archive Book Images. Used under a No restrictions license.

Pronunciation

How to pronounce Criorhina verbosa: /ˌkraɪoʊˈraɪnə vərˈboʊsə/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

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.

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Sources and further reading