Calliopsis hesperia
(Swenk & Cockerell, 1907)
Calliopsis hesperia is a of mining bee in the Andrenidae, first described by Swenk and Cockerell in 1907. The species is native to North America and belongs to a of small, ground-nesting bees commonly found in sandy soils. Two are recognized: C. h. hesperia and C. h. equina. As a member of the Panurginae , this is part of a diverse group of solitary bees that are important native .
Pronunciation
How to pronounce Calliopsis hesperia: /kəˈlaɪ.əpsɪs hɛˈspɛr.iə/
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Identification
Members of the Calliopsis are small mining bees, typically distinguished by their compact body form and ground-nesting . Specific diagnostic features for C. hesperia are not documented in available sources. The may be separated from other Calliopsis by subtle morphological characters of the male genitalia and female scopal hairs, though these require microscopic examination. The C. h. equina was described by Cockerell in 1925 and presumably differs in geographic distribution and minor morphological traits.
Habitat
Based on -level characteristics, Calliopsis typically inhabit sandy or loose soils suitable for ground nesting. The related species C. zebrata has been observed nesting in sandy substrates. Available records indicate C. hesperia occurs in western North American regions, suggesting to arid or semi-arid environments with appropriate soil conditions for burrowing.
Distribution
North America. The has been recorded in western regions of the continent. The nominate C. h. hesperia and C. h. equina (described from New Mexico) suggest a southwestern United States distribution, though precise range boundaries are not well documented.
Ecological Role
As a solitary ground-nesting , this likely functions as a of native flowering plants. Members of Andrenidae are significant components of native bee and contribute to pollination services in natural , particularly in regions where they are abundant.
Similar Taxa
- Calliopsis zebrataCongeneric with similar small size and ground-nesting in sandy soils; distinguished by specific patterning and morphological details requiring close examination
- Other Panurginae genera (e.g., Panurgus, Pseudopanurgus)Similar solitary ground-nesting habits and general body form; separated by genitalic and other microscopic characters
- Small Halictidae (sweat bees)Similar size and ground-nesting in some ; distinguished by wing venation and other -level characters
More Details
Subspecies
Two are recognized: Calliopsis hesperia hesperia (nominate) and Calliopsis hesperia equina Cockerell, 1925. The latter was described from New Mexico.
Taxonomic Note
The Calliopsis is classified in the tribe Calliopsini within the Panurginae of Andrenidae. This group represents an early-diverging lineage of bees with distinctive morphological features.