HymenopteraMegachilidae – Leafcutter, Mason, and Resin Bees, and allies

Coelioxys alternatus

This record describes Coelioxys alternatus (species). Recorded family: Megachilidae. Recorded order: Hymenoptera.

Identification and Appearance

Coelioxys alternatus - Coelioxys alternatus
Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon

Medler (1964) reported rearing Coelioxys alternatus from trap nests provisioned by Megachile pugnata . (Baker J. R. 1975 and Mitchell, T.B. 1962)

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Hymenoptera (Ants, Bees, Wasps and Sawflies)
Superfamily
Trigonaloidea
Family
Megachilidae (Leafcutter, Mason, and Resin Bees, and allies)
Subfamily
Megachilinae
Tribe
Megachilini
Genus
Coelioxys (Sharptail Bees)

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

British Columbia to Ontario, Vermont and Massachusetts, south to Florida. Discover Life Map

Seasonal Activity

April (in Florida) and May to September

Diet and Behavior

Diet: The Hosts section on its Discover Life species page lists known floral associations based on specimen records and images.

Additional species information

Species notes from the sources

Etymology: Author: Say, 1837

About Flies: the wider group

Order-level background for Hymenoptera, the group containing Coelioxys alternatus. Species-specific details appear above.

Group overview

Hymenoptera includes over 150,000 described species of ants, bees, wasps, and sawflies. Earth harbors approximately 20 quadrillion (20×10^15) ants, with a combined biomass of ~12 megatons of dry carbon - exceeding the combined biomass of all wild birds and mammals (PNAS, 2022).

Ecological role of the group

About 35% of the world's food crops depend on animal pollinators. The chocolate industry, valued at over $100 billion, depends on pollinating flies and midges. Ants are the dominant soil engineers in most terrestrial ecosystems, turning more soil than earthworms in many habitats.

Economic and practical significance of the group

Pollinators contribute $235-577 billion worth of annual global food production (FAO). In the U.S., bee pollination alone benefits crops valued at $18 billion annually, and honey bees are responsible for $5.4 billion in agricultural productivity. Between April 2023-2024, 55.1% of managed honey bee colonies were lost. The U.S. bee population dropped from 5 million to 2.5 million.

Recorded sources for this group: FAO, USDA, EPA, PNAS (2022), US Fish & Wildlife Service. Imported estimates may describe particular regions or reporting periods.

Explore Hymenoptera families and species →

Photos of Coelioxys alternatus (5)

Coelioxys alternatus - photo 1
Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon
Coelioxys alternatus - photo 2
Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon
Coelioxys alternatus - photo 3
Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon
Coelioxys alternatus - photo 4
Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon
Coelioxys alternatus - photo 5
Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon

Photo credits: Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon

Frequently Asked Questions About Coelioxys alternatus

What is Coelioxys alternatus?

Coelioxys alternatus is a species in the family Megachilidae, within the order Hymenoptera.

How big is Coelioxys alternatus?
FeatureDetails
Female13 mm.
Male10-12 mm
Where is Coelioxys alternatus found?

Range: British Columbia to Ontario, Vermont and Massachusetts, south to Florida. Discover Life Map

What does Coelioxys alternatus eat?

The diet of the Coelioxys alternatus includes The Hosts section on its Discover Life species page lists known floral associations based on specimen records and images..

When is Coelioxys alternatus active?

Coelioxys alternatus: seasonal activity - April (in Florida) and May to September.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by John S. Ascher; Additional contributions by Beatriz Moisset , hg , PaleoJon. Contributors retain copyright over their individual contributions.