pure green augochlora

(Augochlora pura)

Conservation Status
pure green augochlora
  IUCN Red List

LC - Least Concern


NNR - Unranked


not listed


Pure green augochlora is a moderately-sized, solitary, metallic green, halictid bee. Males and females are the same size, 5 16 long.

The head, thorax, and abdomen are bright metallic green, sometimes with a coppery tint, sometimes just coppery, rarely blue. The upper margin of the clypeus does not extend the width of the face, but is intruded upon by lobes of the plate above it (epistome). They are covered with erect whitish hairs. Each abdominal segment has a very narrow dark margin but the abdomen is not conspicuously striped.

The head is covered with relatively short hairs. The face above the upper lip (clypeus) is shiny and moderately covered with well-spaced, shallow pits. The tongue is short. The last segment of the tongue (glossa) is short and pointed. The antennae are black. Below each antennal socket there is a single vertical groove (suture).

The wings are smoky brown and clear. The lobe at the base of the hindwing (jugal lobe) is longer than the submedian cell. The marginal cell of the wing is squared off (truncate) at the end. There are three submarginal cells, the first one longer than the third. The basal vein is strongly arched. The structure at the base each the wing (tegula) is dark brown and oval.

The legs are brown and brownish-black with short hairs. The female has a scopa, a dense patch of longer, branched hairs used to collect pollen, on the fourth segment (tibia). The male lacks this modification.




Total Length: 5 16


Similar Species


Woodlands and nearby thickets and pastures.




Two or three generations per year: April to October




Males patrol an established route, flying quickly and continuously between specific flowers.


Life Cycle


The overwintered mated female emerges in April. Using an existing insect burrow in dead wood as a starting point, she digs a nest consisting of many branched burrows. She places a pollen ball and nectar in each burrow then lays a single egg on the pollen ball. The first generation offspring emerge as adults in June. By the end of June they have constructed their own nests. The larvae or pupa of the last generation overwinter and emerge as adults the following spring. Adult females overwinter beneath rotting logs in a state of diapause. Males die in the fall.

Nests may be placed close together but they do not interconnect. Females do not cooperate with others in raising the young.


Larva Food


Flower pollen and nectar


Adult Food


Pollen and nectar of at least 41 species of flowering plants, especially maple in early spring.


Distribution Map



7, 24, 27, 29, 30.




Very common and widespread



Hymenoptera (ants, bees, wasps, and sawflies)  


Apocrita (wasps, ants and bees)  


Aculeata (ants, bees and stinging wasps)  
  Clade Anthophila  


Apoidea (apoid wasps, bees, sphecoid wasps)  


Halictidae (sweat and furrow bees)  






  Subgenus Augochlora  



Subordinate Taxa


pure green augochlora (Augochlora pura mosieri)

pure green augochlora (Augochlora pura pura)






Common Names


a sweat bee

pure green augochlora

pure golden green sweat bee

pure green sweat bee









On insects, a hardened plate on the face above the upper lip (labrum).



A period of decreased metabolic activity and suspended development.


Jugal lobe

In Hymenoptera: The rear lobe at the base of the hindwing.



A small, hardened, plate, scale, or flap-like structure that overlaps the base of the forewing of insects in the orders Lepidoptera, Hymenoptera, Diptera, and Homoptera. Plural: tegulae.



The fourth segment of an insect leg, after the femur and before the tarsus (foot).






Visitor Photos

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Alfredo Colon

    pure green augochlora   pure green augochlora  
    pure green augochlora   pure green augochlora  
    pure green augochlora   pure green augochlora  
MinnesotaSeasons.com Photos

Pure green augochlora on meadow hawkweed

    pure green augochlora   pure green augochlora  



Sweat Bee (Augochlora pura)
Andree Reno Sanborn
  Sweat Bee (Augochlora pura)  



Visitor Videos

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Other Videos
  Halictid bee blowing bubble
Peter Chen

Published on Jun 18, 2015

A Halictid bee (Augochlora pura) lets water evaporate through a little bubble, concentrating the nectar.



Thanks to Hartmut Wisch, Beatriz Moisset, Doug Yanega for info. Oakhurst Forest Preserve, Kane County IL 6/18/15

  Cypripedium parviflorum pollen dispersal
Retha Meier

Uploaded on May 7, 2011

A native bee, probably Augochlora pura, enters the labellum of this small variety of Cypripedium parviflorum. As the bee squeezes out the rear exit hole, the anther is pressed against the bee's dorsal thorax and a sticky, yellow pollinia mass is deposited.




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  Alfredo Colon

Location: Woodbury, Minnesota

pure green augochlora  
  Alfredo Colon

Location: Woodbury, Minnesota

pure green augochlora  
MinnesotaSeasons.com Sightings




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