Calliopsis (bee)

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Calliopsis
File:Calliopsis andreniformis, F, Side, MD, Carroll County 2013-07-24-15.03.08 ZS PMax.jpg
Calliopsis andreniformis, female
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Andrenidae
Subfamily: Panurginae
Tribe: Calliopsini
Genus: Calliopsis
Smith, 1853
Subgenera
  • Calliopsis Smith, 1853
  • Calliopsima Shinn, 1967
  • Ceroliopoeum Ruz, 1991
  • Hypomacrotera Cockerell & Porter, 1899
  • Liopoeodes Ruz, 1991
  • Liopoeum Friese, 1906
  • Micronomadopsis Rozen, 1958
  • Nomadopsis Ashmead, 1898
  • Perissander Michener, 1942
  • Verbenapis Cockerell & Atkins, 1902
Synonyms
  • Claremontiella Cockerell, 1933
  • Macronomadopsis Rozen, 1958

Calliopsis is a genus of panurgine bees in the family Andrenidae. There are over 80 described species[1] distributed throughout the western hemisphere.[2]

Description

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Calliopsis are small dark bees, often with yellow or white markings, especially in males. Calliopsis andreniformis have green eyes, and males of the species have bright yellow faces and legs.[3][4]

Mating

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Male Calliopsis fly close to the ground and, in one species, many of them evidently copulate with only a single female. Mating takes place on flowers and at nest sites.[5] Calliopsis also are univoltine, which means they only have one brood of offspring a year.

Nesting

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Nearly all female Calliopsis are solitary nesters, but they locate nests within aggregations with other females.[6] Nests are built in the form of horizontal tunnels connected to waterproofed chambers containing eggs and provisions stored by the mother bee.[7] Each female digs a solitary underground nest, usually in compacted, dense soil and close to flowering plants that serve as food sources.[8] Calliopsis nesting aggregations can be as dense as 1,650 nests/m^2.[5]

The nest tunnels measure 7.5 mm maximum diameter and 13 mm long. Calliopsis bees build their nest the way they do to mitigate competition between males. Their nest is built for waterproof hazards to keep the soil dry until the ground evaporates. Although reported in a few other bee groups, Calliopsis are unusual in that some species' nests can survive complete submersion: Calliopsis pugionis emerged from nests that had been underwater for at least 3 months.[9]

Species

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These 88 species belong to the genus Calliopsis.[10][11][12]

References

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  3. ^ Shinn, Alvin F. A revision of the bee genus Calliopsis and the biology and ecology of C. andreniformis (Hymenoptera, Andrenidae). University of Kansas Publications, 1967.
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