Photos / Sounds

Observer

swisschick

Date

July 5, 2024 09:49 AM PDT

Photos / Sounds

What

Alkali Nomia (Nomia melanderi)

Observer

swisschick

Date

July 6, 2024 01:01 PM PDT

Description

Last segments on abdomen are iridescent

Photos / Sounds

What

Common Digger Bees (Genus Anthophora)

Observer

mylodon

Date

May 7, 2023 11:25 AM PDT

Photos / Sounds

What

Bumble Bees (Genus Bombus)

Observer

mylodon

Date

May 28, 2023 01:09 PM PDT

Photos / Sounds

What

Pacific Green Small-Mason (Hoplitis fulgida ssp. platyura)

Observer

mylodon

Date

July 12, 2023 04:22 PM PDT

Photos / Sounds

What

Valley Carpenter Bee (Xylocopa sonorina)

Observer

mylodon

Date

April 8, 2024 05:01 PM MST

Photos / Sounds

Observer

mylodon

Date

May 4, 2024 07:43 AM PDT

Description

What is going on here?

Photos / Sounds

What

Bees (Epifamily Anthophila)

Observer

mylodon

Date

April 9, 2024 01:31 PM MST

Photos / Sounds

What

Nomad Bees (Genus Nomada)

Observer

mylodon

Date

May 4, 2024 07:14 AM MDT

Photos / Sounds

Observer

watercolorist

Date

July 20, 2022 09:39 AM PDT

Description

foraging on Knapweed

Photos / Sounds

What

Brown-winged Striped Sweat Bee (Agapostemon splendens)

Date

August 19, 2018 05:26 PM PDT

Photos / Sounds

What

Nomad Bees (Genus Nomada)

Date

August 7, 2021 02:52 PM PDT

Photos / Sounds

Observer

eebee

Date

July 2023

Photos / Sounds

Observer

perigee

Date

April 26, 2023 06:05 PM PDT

Photos / Sounds

What

Western Wasp Fly (Ceriana tridens)

Observer

janeabel

Date

May 1, 2024 11:14 AM PDT

Photos / Sounds

What

Mining Bees (Genus Andrena)

Observer

janeabel

Date

May 1, 2024 12:05 PM PDT

Description

possibly A andrenoides

Photos / Sounds

What

Thrips (Order Thysanoptera)

Observer

wenatcheeb

Date

June 18, 2021 04:09 PM PDT

Description

Umptanum Creek Trail near burn site. We stayed on the trail and did not walk in very far.

Photos / Sounds

Observer

la4bonte

Date

April 21, 2024 05:54 PM PDT

Description

Are there parasites / mites in / on the abdomen? (See pics #1-7)

Photos / Sounds

What

Eastern Carpenter Bee (Xylocopa virginica)

Observer

janeabel

Date

April 6, 2024 08:26 AM PDT

Description

A very cold bumblebee

Photos / Sounds

What

Nomad Bees (Genus Nomada)

Observer

little_mousie

Date

April 2024

Description

This is part of a study of the bee hole above and the passer by's who stop to visit her nest. The penny and the stick are my reference marks for this nest similar to dropping a numbered reference tage.

Continuing the association this Nomad bee to this bee hole, the Nomad bee is in a 1:1 relationship with the bee species it paracitizes in a similar manner to some bees and their flowers. The Nomad must produce the pheromones of its bee host in order to remain undetected in the nest and be reproductively successful. It may have other host species in other regions but here, locally it has only one. To the extent that Nomad bee's species can be known, it's prey can also be known. It is not an accident that it is here inspecting this hole. It followed the pheromone trail produced by the bee who lives there. The question the Nomad has to answer is whether she will be caught by the nest owner.

For more information:
Under the radar: detection avoidance in brood parasitic bees https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6388046/?report=classic

Harrison’s rule corroborated for the body size of cleptoparasitic cuckoo bees (Hymenoptera: Apidae: Nomadinae) and their hosts https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9243014/?report=classic

Photos / Sounds

What

Pacific Dune-Digger (Habropoda miserabilis)

Observer

bradmoon

Date

April 5, 2024 01:48 PM PDT

Description

One video shows the mating behavior of many males around a female that emerged recently, and the other videos show some of the male activity over the nesting area as they search for emerging females. It's hard to capture how many bees were active and how impressive of their activity is in both sight and sound, but these videos give a limited sense of it, although you'll have to imagine the immersive buzz the bees made all around me unless/until I can extract audio to upload as a sound file. (By the way, the slight motion of the background relative to the foreground in the videos is an artifact of processing used stabilize the hand-held video so it doesn't jump around.)

The still photos show new nests (indicated by the fresh sand piles) being dug by females that have already emerged and mated. Over the past few days, the number of new nests went from a few to dozens in several nesting areas I've observed throughout this area; nearly all of the nests in the last two photos were new since I searched that sand ridge a few days ago.

Here's an approximate timeline of activity for these bees based on my observations:

Around March 15, the first males became active. They were common and active around the flowering manzanitas and huckleberries; it looked like they were patrolling for females as well as occasionally feeding at the flowers (e.g., this observation).

About 10 days later, around March 26, males were actively patrolling nesting sites in the sand, although no new nest burrows were present yet. The first females became active and the first mating took place (e.g., this observation).

About a week later, around April 3, males became abundant and highly active around nesting areas, while some males still patrolled flowering plants (in this area still mainly manzanita and huckbleberry plants), and additional females became active along with more mating. The first large mating aggregations became obvious. New nest burrows were still rare (e.g., this observation and this observation).

Within days (by April 5), females that had mated were digging many new nest burrows (e.g., this observation and today's observation above).

For now, activity continues whenever rain stops, clouds thin, and temperatures reach the high 40s to mid 50s F.

Photos / Sounds

Observer

alexwilson5

Date

September 10, 2023 06:36 PM PDT

Description

On hollyhock leaves and buds, which had a rust fungal disease, weevils, and earwigs. Also visited by many wasps and bees.

Photos / Sounds

Observer

melanie388

Date

November 11, 2020 02:38 PM +13

Description

Found nesting in flax

Photos / Sounds

What

Van Dyke's Bumble Bee (Bombus vandykei)

Observer

sedgequeen

Date

March 27, 2022 11:53 AM PDT

Photos / Sounds

What

Ashy Digger Bee (Habropoda cineraria)

Observer

rustybee

Date

April 20, 2021 10:15 AM PDT

Photos / Sounds

What

Ashy Digger Bee (Habropoda cineraria)

Observer

watercolorist

Date

March 12, 2024 02:10 PM PDT

Description

Several individuals present.

Photos / Sounds

Observer

chloralictus

Date

July 31, 2023 02:51 PM PDT

Description

A very worn bee found sunning on a rock, and later moved to this flower. Generally open, rocky slope habitat.

Photos / Sounds

What

Prong-faced Slender-Mason (Protosmia rubifloris)

Observer

jbartlett79

Date

June 2, 2021 05:25 PM PDT

Description

I cannot be certain these are all the same individual; 3-4 of this species were working this Spanish lavender simultaneously.

Photos / Sounds

What

Prong-faced Slender-Mason (Protosmia rubifloris)

Observer

jbartlett79

Date

May 10, 2021 02:14 PM PDT

Description

Looks like possible protandrenini but these are so small I can't really get a sharp enough photo to see the foveae clearly at all.

Photos / Sounds

What

Prong-faced Slender-Mason (Protosmia rubifloris)

Observer

edwardrooks

Date

June 2, 2023 09:54 AM PDT

Photos / Sounds

What

Mites and Ticks (Subclass Acari)

Observer

stevejones

Date

March 2, 2024 09:30 AM MST

Description

My guess on the ID. On deceased Apis mellifera, latter died on Lycium exsertum plant.

Photos / Sounds

What

Currant Orchard Bee (Osmia ribifloris)

Observer

roomthily

Date

March 3, 2024 03:32 PM MST

Photos / Sounds

What

California Digger Bee (Anthophora californica)

Observer

kneubaue

Date

March 11, 2024 12:34 PM MST

Description

~8-9 mm body. Modified rear leg resembles A. californica

Photos / Sounds

What

Mining Bees (Genus Andrena)

Observer

catherjy

Date

March 14, 2024 10:40 AM MST

Description

In sphaeralcea

Photos / Sounds

What

Globemallow Andrena (Andrena sphaeralceae)

Observer

beesearcher

Date

March 14, 2024 05:09 PM MST

Photos / Sounds

Observer

halinaa

Date

July 8, 2022 01:23 PM +03

Photos / Sounds

Observer

naturalist_ua

Date

June 25, 2022 05:33 PM EEST

Photos / Sounds

What

Greene's Giant Ichneumonid Wasp (Megarhyssa greenei)

Observer

jeongyoo

Date

July 26, 2022 04:34 PM EDT

Description

Ovipositing into a dead tree.

Photos / Sounds

What

Nomad Bees (Genus Nomada)

Observer

jeongyoo

Date

June 22, 2023 12:33 PM EDT

Description

Waiting around Agapostemon burrow. Tried to enter the nest, backed off when encountered a gatekeeper. Waited on a grass for few minutes. Made another attempt when a bee left, only to encounter another gatekeeper and backed off again. Eventually flew off.

Photos / Sounds

What

Sheepmoths (Genus Hemileuca)

Observer

wenatcheeb

Date

June 14, 2010 07:31 PM PDT

Description

Amazing caterpillar find on buckwheat.

Photos / Sounds

What

Rozen's Giant Bee (Meganomia gigas)

Observer

adamjmtz

Date

April 17, 2017 03:00 PM CEST

Photos / Sounds

What

Tansy Mustard Sweat Bee (Lasioglossum sisymbrii)

Observer

seher

Date

July 3, 2023 10:17 PM PDT

Description

On my 1L Nalgene waterbottle - very minute

Photos / Sounds

What

Hilgard's Suncup (Neoholmgrenia hilgardii)

Observer

zharkikh

Date

June 16, 2022 04:03 PM PDT

Photos / Sounds

What

Blackfoot River Suncup (Neoholmgrenia andina)

Observer

philippwickey

Date

May 15, 2019 12:42 PM HST

Photos / Sounds

What

Modest Pebble Bee (Dianthidium pudicum)

Observer

nerderific

Date

August 10, 2023 12:28 PM PDT

Photos / Sounds

What

Sharptail Bees (Genus Coelioxys)

Observer

nerderific

Date

August 6, 2021 05:01 PM PDT

Photos / Sounds

Observer

sixlegs

Date

April 21, 2023 12:27 PM CDT

Description

This is a male bee, measuring 10.5 mm, found feeding on resinbush (Viguiera stenoloba). Identified from specimen by John L. Neff. Coelioxys (Rhinocoelioxys) zapoteca is a subtropical bee. Its occurrence At Falcon SP (Starr County) marks a range extension; previously, the species’ northern range was thought to be the state of San Luis Potosi. [A description of this species can be found in: Filho, Léo Correia Da Rocha, and Packer, Laurence (2015). Revision of the neotropical subgenera Coelioxys (Platycoelioxys) Mitchell and C. (Rhinocoelioxys) Mitchell (Hymenoptera; Megachilidae) with the description of one new species. Zootaxa 3941 (2): 151-203.]

Photos / Sounds

What

Bumble Bees (Genus Bombus)

Observer

nerderific

Date

June 11, 2022 03:36 PM PDT

Description

All of its butt hair is rubbed off so I can’t tell what species.

Photos / Sounds

What

Mining Bees (Genus Andrena)

Observer

nerderific

Date

April 17, 2020 02:19 PM UTC

Photos / Sounds

What

Texas Striped Sweat Bee (Agapostemon texanus)

Observer

nerderific

Date

September 18, 2023 04:46 PM PDT

Photos / Sounds

What

Red-belted Bumble Bee (Bombus rufocinctus)

Observer

nerderific

Date

May 10, 2023 12:58 PM PDT

Photos / Sounds

What

Pallid Desert-Digger (Centris pallida)

Observer

stephenbuchmann

Date

May 10, 2023

Description

Tumamoc Hill, The Desert Laboratory, The University of Arizona, Tucson, AZ.

Historically, the eastern creosote bush flats (between two washes) has been rather consistently the nesting aggregation and emergence sites of Centris pallida for decades.

I saw metanders (large male morphs) at this site again on May 10, 2023 searching for micro sites to dig for females. However, this was not a good year. Some years, this area (perhaps 10 hectares) contains many thousands, even tens of thousands, of searching and patrolling males, mating pairs and nesting females.
Meghan Barrett conducted some of her C. pallida thermal biology Ph.D. studies (Drexel Univ.) here in 2018 and 2019. Buchmann has also worked onsite with cinematographer Keith Brush to film mating behavior, and with still photographer Dr. Bruce Taubert.

Historical (recent) bee emergence dates at this TH site have been:
14 April - 8 May 2016
24 April - 4 May, 2018
13 April - 29 April, 2019

Climate change:
Interestingly, Centris pallida emergence dates (Tumamoc Hill, Blue Pt. Bridge recreation area along the Salt River) in the 1970's and 1980's were strongly at the tail end of April, or early May. Today, we expect to see these bees emerging about 10 days earlier.

*Note- photographs of Centris pallida adults and brood cell courtesy of Dr. Bruce Taubert. Please DO NOT reuse without permission.

Photos / Sounds

What

Small Carpenter Bees (Genus Ceratina)

Observer

willkuhn

Date

July 4, 2022 11:43 AM EDT

Description

For ID of host bee larva
Body length: 7.38mm
Bee larva ex. hollow Solidago stem (photo #8), containing 3 larvae and one adult male(?), presumably all of the same parasitoid wasp species floating around the periphery (IDed here). The host bee larva is hollowed out but you can still make out the head capsule, tracheae, and probably other features.

Associated observations:

Photos / Sounds

What

Western Evening Primrose Sweat Bee (Lasioglossum lusorium)

Observer

watercolorist

Date

September 26, 2023 11:56 AM PDT

Photos / Sounds

What

Sharptail Bees (Genus Coelioxys)

Observer

watercolorist

Date

October 21, 2023 03:09 PM PDT

Photos / Sounds

What

American Hornet Moth (Sesia tibiale)

Observer

littlespacecase

Date

Missing Date

Photos / Sounds

Observer

jdjohnson

Date

June 19, 2022 03:27 PM PDT

Photos / Sounds

What

Orange-legged Furrow Bee (Halictus rubicundus)

Observer

bufface

Date

July 19, 2021 06:28 PM PDT

Photos / Sounds

What

Mining Bees (Genus Andrena)

Observer

adamschneider

Date

May 11, 2023 12:59 PM PDT

Photos / Sounds

What

Mining Bees (Genus Andrena)

Observer

little_mousie

Date

June 2022

Description

I don't think I've seen the wing fenestration / vanes displayed this clearly in any of my pictures.

Photos / Sounds

What

Western Bumble Bee (Bombus occidentalis)

Observer

hawnzd

Date

August 30, 2023 12:02 PM PDT

Photos / Sounds

What

Silver-tailed Petalcutter (Megachile montivaga)

Observer

brburke

Date

June 23, 2021 04:48 PM EDT

Description

Burrowing in to the stock of a Pale Indian Plantain (Arnoglossum atriplicifolium)

Photos / Sounds

What

Eastern Carpenter Bee (Xylocopa virginica)

Observer

filovirus

Date

April 15, 2023 04:44 PM EDT

Photos / Sounds

What

Death Camas Mining Bee (Andrena astragali)

Observer

bobmcd

Date

June 2022

Description

Note straight tibial spur

Photos / Sounds

What

Silver-tailed Petalcutter (Megachile montivaga)

Observer

jcochran706

Date

October 15, 2022 01:31 PM CDT

Tags

Photos / Sounds

What

Prong-faced Slender-Mason (Protosmia rubifloris)

Observer

cappaert

Date

April 30, 2023 02:34 PM PDT

Photos / Sounds

What

Blue-and-black Mining Bee (Andrena nigrocaerulea)

Observer

cappaert

Date

June 3, 2023 01:01 AM PDT

Photos / Sounds

Observer

jbartlett79

Date

April 29, 2023 11:41 AM PDT

Description

This is a wild-ass guess—these look more like wasps than bees to my eye—but these are beautiful insects.

Hoping that tagging a genus will help the right folks see this (and either reclassify correctly or narrow down further).

Photos / Sounds

Observer

wenatcheeb

Date

April 20, 2023 11:10 AM PDT

Description

Wasp nest with cocoons, prey seems to be diptera, by wings showing here and there. Small hole on side of stalk, I think this is Tall buckwheat. I added close-ups of wings in case the flies might be identifiable.

Photos / Sounds

What

Bullock's Oriole (Icterus bullockii)

Observer

kiwikiu

Date

May 11, 2023 08:38 AM PDT

Photos / Sounds

What

Red-tailed Stingless Bee (Trigona fulviventris)

Observer

kiwikiu

Date

December 29, 2021 09:38 AM CST

Photos / Sounds

What

Bees (Epifamily Anthophila)

Observer

kiwikiu

Date

May 11, 2023 08:38 AM PDT

Photos / Sounds

Observer

watercolorist

Date

August 9, 2022 09:17 AM PDT

Description

Mating pair, foraging on sunflower.

Photos / Sounds

Observer

watercolorist

Date

August 9, 2022 12:17 PM PDT

Photos / Sounds

Observer

watercolorist

Date

August 20, 2023 12:01 PM PDT

Photos / Sounds

What

Concave Longhorn-Cuckoo (Triepeolus concavus)

Observer

watercolorist

Date

August 20, 2023 12:26 PM PDT

Description

Female. Cleptoparasite of Svastra obliqua which was found at this location at the same time.

Photos / Sounds

What

Western Bumble Bee (Bombus occidentalis)

Observer

rjbaltierra

Date

July 10, 2020 10:26 AM PDT

Photos / Sounds

Observer

janeabel

Date

July 25, 2023 01:14 PM PDT

Photos / Sounds

What

Blood Bees (Genus Sphecodes)

Observer

jasmine193

Date

Missing Date

Description

Gathering pollen from raspberry blossoms

Photos / Sounds

What

Alkali Nomia (Nomia melanderi)

Observer

janeabel

Date

June 28, 2021 10:58 AM CDT

Description

Nomia melanderi on thistle

Photos / Sounds

Observer

watercolorist

Date

April 9, 2023 01:35 PM PDT

Photos / Sounds

What

Indiscriminate Cuckoo Bumble Bee (Bombus insularis)

Observer

wenatcheeb

Date

September 9, 2022 11:26 AM PDT

Photos / Sounds

Observer

janeabel

Date

September 25, 2022 11:15 AM PDT

Photos / Sounds

What

Yellow-faced Bumble Bee (Bombus vosnesenskii)

Observer

ben10101

Date

February 18, 2022 04:03 PM PST

Description

The circled pictures are as clear I can get, it seems like there might be a strepsiperan attached to it?

Photos / Sounds

What

Autumnal Cellophane-Cuckoo (Epeolus autumnalis)

Observer

bob15noble

Date

September 19, 2018 02:00 PM EDT

Photos / Sounds

What

Zephyr Sweat Bee (Lasioglossum zephyrus)

Observer

watercolorist

Date

October 30, 2022 01:17 PM PDT

Photos / Sounds

Observer

janeabel

Date

August 27, 2023 09:22 AM PDT

Description

On diffuse knapweed in the first photos, then under the plant.

Photos / Sounds

What

Brown-belted Bumble Bee (Bombus griseocollis)

Observer

watercolorist

Date

August 19, 2023 12:45 PM PDT

Photos / Sounds

What

Fog-belt Bumble Bee (Bombus caliginosus)

Observer

rtshaw80

Date

August 2023

Photos / Sounds

What

California Digger-cuckoo Bee (Brachymelecta californica)

Observer

jenny312

Date

August 25, 2020 05:33 PM PDT

Photos / Sounds

Observer

debbiemeader

Date

July 26, 2020

Photos / Sounds

What

Yellow-Fronted Bumble Bee (Bombus flavifrons)

Observer

wolfram06

Date

July 16, 2023 05:48 PM PDT

Description

Cell service was poor in this area, so the location is approximate.

Photos / Sounds

What

Ashton's Cuckoo Bumble Bee (Bombus ashtoni)

Observer

aksusan

Date

June 14, 2022 06:24 PM AKDT

Description

sorry, Linc, but the dry cycle maimed it.

Photos / Sounds

What

Mining Bees (Genus Andrena)

Observer

tessanoel

Date

April 7, 2022 02:56 PM PDT

Description

Was digging a hole

Photos / Sounds

Observer

tessanoel

Date

July 27, 2023 03:28 PM PDT

Photos / Sounds

What

Morrison's Bumble Bee (Bombus morrisoni)

Observer

cadelillquist

Date

June 2023

Description

Saw a couple individuals visiting this mock orange this morning.

Photos / Sounds

Observer

donnalucas

Date

May 17, 2022 10:26 AM PDT

Photos / Sounds

What

Red-belted Bumble Bee (Bombus rufocinctus)

Observer

garychang

Date

July 10, 2023 04:51 PM PDT

Description

Was ignored by the ambush bug in the 2nd photo.

Photos / Sounds

What

Ashy Digger Bee (Habropoda cineraria)

Observer

wenatcheeb

Date

April 2, 2022 04:43 PM PDT

Description

CV thinks she is a Habropoda, but I think there is an Anthophora with orange scopae…
Why aren’t ranges included on suggestions? Amegilla? In the PNW?

Photos / Sounds

What

Bumblebee-like Digger Bee (Anthophora bomboides)

Observer

stormcatcher

Date

May 15, 2015 04:40 PM PDT

Description

feeding on arugula flowers