Hella Bee Nerd
@sfbaybees.bsky.social
Learning about native bees.
Western Pygmy Blue, America’s smallest butterfly and one of the world’s smallest. About the size of a thumbnail. [Alameda, CA 11-8-25] #butterflies
November 9, 2025 at 12:25 AM
Western Pygmy Blue, America’s smallest butterfly and one of the world’s smallest. About the size of a thumbnail. [Alameda, CA 11-8-25] #butterflies
Ma’am, you can’t just wander the sidewalk like that. Most people pay no attention to where they’re stepping. [Foothill carpenter bee, Alameda, CA 11-4-25] #bees #nativebees
November 6, 2025 at 6:32 PM
Ma’am, you can’t just wander the sidewalk like that. Most people pay no attention to where they’re stepping. [Foothill carpenter bee, Alameda, CA 11-4-25] #bees #nativebees
Usually one sees female bees shooing away other male or female bees with the traditional leg swipe, so it was notably bemusing to see a male longhorn bee use it on another male. I'm pretty sure this is the only time I've seen that. [Alameda, CA 8-16-25] #bees #nativebees
November 4, 2025 at 6:52 PM
Usually one sees female bees shooing away other male or female bees with the traditional leg swipe, so it was notably bemusing to see a male longhorn bee use it on another male. I'm pretty sure this is the only time I've seen that. [Alameda, CA 8-16-25] #bees #nativebees
In moderately Halloween-appropriate content, this Nomada bee that never takes off her wasp costume. Hey, you gotta appreciate their commitment to the bit... [Alameda, CA 7-20-25] #bees #nativebees
October 31, 2025 at 6:06 PM
In moderately Halloween-appropriate content, this Nomada bee that never takes off her wasp costume. Hey, you gotta appreciate their commitment to the bit... [Alameda, CA 7-20-25] #bees #nativebees
Ever see a complete bee grooming routine up close? I’m not saying this Agapostemon subtilior female and I are heroes, but we are here to help. Enjoy this quality motion picture, complete with PG&E construction noises for that true California flavor. [Alameda, CA 10-27-25] #bees #nativebees
October 27, 2025 at 8:53 PM
Ever see a complete bee grooming routine up close? I’m not saying this Agapostemon subtilior female and I are heroes, but we are here to help. Enjoy this quality motion picture, complete with PG&E construction noises for that true California flavor. [Alameda, CA 10-27-25] #bees #nativebees
Here's an uncommonly clear view of Anthidium manicatum (European wool carder bee) mating interaction. You can see how the female positions her wings safely out of the way, and how she's interacting with the male's feathery forelegs. [5-24-25] #bees #nativebees
October 24, 2025 at 5:40 PM
Here's an uncommonly clear view of Anthidium manicatum (European wool carder bee) mating interaction. You can see how the female positions her wings safely out of the way, and how she's interacting with the male's feathery forelegs. [5-24-25] #bees #nativebees
🎼 Tongue shadow, tongue shadow- 🎶 Watch this little male Zadontomerus carpenter bee perform an elaborate nectar-probing routine in a rock purslane flower. [Alameda, CA 10-21-25] #bees #nativebees
October 21, 2025 at 8:15 PM
🎼 Tongue shadow, tongue shadow- 🎶 Watch this little male Zadontomerus carpenter bee perform an elaborate nectar-probing routine in a rock purslane flower. [Alameda, CA 10-21-25] #bees #nativebees
Sure, you can use fill flash to have perfectly shadowless macro photos. But where's the Dialictus Drama? Where's the Theater? Bees prefer it theatrical, I'm pretty sure. ¯\_(ツ)_/¯ [Alameda, CA 5-29-25] #bees #nativebees
October 20, 2025 at 5:01 PM
Sure, you can use fill flash to have perfectly shadowless macro photos. But where's the Dialictus Drama? Where's the Theater? Bees prefer it theatrical, I'm pretty sure. ¯\_(ツ)_/¯ [Alameda, CA 5-29-25] #bees #nativebees
On the one hand, this jumping spider was a bit lacking in ambition, deciding this female Osmia bee was too much to try and take down. On the other hand, there was a moment of "Weeeeel, maaaaaybe-" in there... [Alameda, CA 6-7-25] #bees #nativebees #spiders
October 16, 2025 at 5:37 PM
On the one hand, this jumping spider was a bit lacking in ambition, deciding this female Osmia bee was too much to try and take down. On the other hand, there was a moment of "Weeeeel, maaaaaybe-" in there... [Alameda, CA 6-7-25] #bees #nativebees #spiders
Cuckoo vs Cuckoo... the cuckooning? A Nomada bee (perhaps a male, from the looks of the slightly longer sniffing sticks) flies by a Coelioxys bee female (easy to tell from the one large spike on the abdomen vs several small ones males have). [Alameda, CA 6-7-25] #bees #nativebees
October 14, 2025 at 5:00 PM
Cuckoo vs Cuckoo... the cuckooning? A Nomada bee (perhaps a male, from the looks of the slightly longer sniffing sticks) flies by a Coelioxys bee female (easy to tell from the one large spike on the abdomen vs several small ones males have). [Alameda, CA 6-7-25] #bees #nativebees
Agapostemon are terrible at mating (they still get it done - must be sheer numbers), but they are very, very thorough foragers. [Alameda, CA 10-3-25] #bees #nativebees
October 13, 2025 at 4:53 PM
Agapostemon are terrible at mating (they still get it done - must be sheer numbers), but they are very, very thorough foragers. [Alameda, CA 10-3-25] #bees #nativebees
When you’re just trying to groom but it’s a rough neighborhood. Presented in scientifically applied SloMoVision. [Leafcutter male aka Mittens vs Agapostemon subtilior male, Alameda, CA 10-7-25] #bees #nativebees
October 8, 2025 at 4:16 PM
When you’re just trying to groom but it’s a rough neighborhood. Presented in scientifically applied SloMoVision. [Leafcutter male aka Mittens vs Agapostemon subtilior male, Alameda, CA 10-7-25] #bees #nativebees
It’s surprising how seldom I see European wool carder bees mating considering how ubiquitous they are around here. But I have seen it more often than usual this year. [Alameda, CA 10-5-25] #bees #nativebees
October 6, 2025 at 12:40 AM
It’s surprising how seldom I see European wool carder bees mating considering how ubiquitous they are around here. But I have seen it more often than usual this year. [Alameda, CA 10-5-25] #bees #nativebees
Sometimes it is your larvae that are the soil predator. Sometimes another relentless soil predator decides to hunt you and it’s quite the nuisance. Stiletto fly vs ant: the reckoning. [Alameda, CA 10-3-25] #flies #diptera #entomology #ants
October 3, 2025 at 9:23 PM
Sometimes it is your larvae that are the soil predator. Sometimes another relentless soil predator decides to hunt you and it’s quite the nuisance. Stiletto fly vs ant: the reckoning. [Alameda, CA 10-3-25] #flies #diptera #entomology #ants
I was away out of state for a few weeks (and the end of Summer bee season), but I was greeted by a few holdouts when I got back, like this Western Leaf Cutter female, still getting it done with her one remaining sniffing stick. [Alameda, CA 9-30-25] #bees #nativebees
October 2, 2025 at 8:20 PM
I was away out of state for a few weeks (and the end of Summer bee season), but I was greeted by a few holdouts when I got back, like this Western Leaf Cutter female, still getting it done with her one remaining sniffing stick. [Alameda, CA 9-30-25] #bees #nativebees
I love dragonflies, even though it is always so frustrating trying to photograph them. But eventually with enough patience you can catch fun scenes like "Variegated Meadowhawk and Flame Skimmer are friends". [Alameda, CA 9-14-25] #dragonfly #dragonflies
September 17, 2025 at 5:26 PM
I love dragonflies, even though it is always so frustrating trying to photograph them. But eventually with enough patience you can catch fun scenes like "Variegated Meadowhawk and Flame Skimmer are friends". [Alameda, CA 9-14-25] #dragonfly #dragonflies
Speaking of the end of Longhorn bee season, here is the most impressively elderly male I've yet seen. An amazing amount of hair loss considering they never go into nests, which is how females lose their hairs (hole/tunnel friction). [Alameda, CA 8-16-25] #bees #nativebees
September 16, 2025 at 4:44 PM
Speaking of the end of Longhorn bee season, here is the most impressively elderly male I've yet seen. An amazing amount of hair loss considering they never go into nests, which is how females lose their hairs (hole/tunnel friction). [Alameda, CA 8-16-25] #bees #nativebees
The species identity of these gray Andrena bees that reliably fill the local California Poppies every year in April remains a head-scratcher. Double head-scratcher, according to this one. [Alameda, CA 4-26-25] #bees #nativebees
September 11, 2025 at 5:35 PM
The species identity of these gray Andrena bees that reliably fill the local California Poppies every year in April remains a head-scratcher. Double head-scratcher, according to this one. [Alameda, CA 4-26-25] #bees #nativebees
Like other bee nerds around here, I have had unusually few Hylaeus bee sightings this year. There’s no obvious explanation so far. And yes, that’s a Agapostemon subtilior flyby - many sightings of them this year, as usual. [Alameda, CA 9-9-25] #bees #nativebees
September 9, 2025 at 8:07 PM
Like other bee nerds around here, I have had unusually few Hylaeus bee sightings this year. There’s no obvious explanation so far. And yes, that’s a Agapostemon subtilior flyby - many sightings of them this year, as usual. [Alameda, CA 9-9-25] #bees #nativebees
Usually I see wasps digging nests or going into an existing nest, so it was a fun surprise to see this Sphex lucae engaging in some very different nest related work. [Alameda, CA 9-8-25] #entomology #wasps
September 8, 2025 at 9:10 PM
Usually I see wasps digging nests or going into an existing nest, so it was a fun surprise to see this Sphex lucae engaging in some very different nest related work. [Alameda, CA 9-8-25] #entomology #wasps
Ceratina small carpenter bee mating is a more complicated activity than I realized before recording this. Many bees do antenna stroking but note he’s also grabbed her back legs with his and is rapidly stroking them with his middle legs. A lot to keep track of. [Oakland, CA 9-1-25] #bees #nativebees
September 4, 2025 at 5:15 PM
Ceratina small carpenter bee mating is a more complicated activity than I realized before recording this. Many bees do antenna stroking but note he’s also grabbed her back legs with his and is rapidly stroking them with his middle legs. A lot to keep track of. [Oakland, CA 9-1-25] #bees #nativebees
"Aw, Damselflies are so delicate and charming!"
"You mean the beasts of the hunt that snatch you from mid-air and eat you alive head first?"
"...that's the ones."
[Oakland, CA 8-30-25] #entomology #macro #odonata
"You mean the beasts of the hunt that snatch you from mid-air and eat you alive head first?"
"...that's the ones."
[Oakland, CA 8-30-25] #entomology #macro #odonata
September 2, 2025 at 4:24 PM
"Aw, Damselflies are so delicate and charming!"
"You mean the beasts of the hunt that snatch you from mid-air and eat you alive head first?"
"...that's the ones."
[Oakland, CA 8-30-25] #entomology #macro #odonata
"You mean the beasts of the hunt that snatch you from mid-air and eat you alive head first?"
"...that's the ones."
[Oakland, CA 8-30-25] #entomology #macro #odonata
The smallest bees also have appropriately proportioned infinitesimal phoretic mites. Look closely at this male Hylaeus bee's left eye. No verdict on whether the mites get shinier as they get smaller. This one is very shiny. [Oakland, CA 7-6-25] #bees #nativebees
August 29, 2025 at 5:46 PM
The smallest bees also have appropriately proportioned infinitesimal phoretic mites. Look closely at this male Hylaeus bee's left eye. No verdict on whether the mites get shinier as they get smaller. This one is very shiny. [Oakland, CA 7-6-25] #bees #nativebees
Meanwhile on the island we are also winding down to a few elderly males and the occasional female Longhorn bee. You can see this veteran’s age from all the hair loss and his ragged wing edges. [Alameda, CA 8-28-25] #bees #nativebees
August 29, 2025 at 12:06 AM
Meanwhile on the island we are also winding down to a few elderly males and the occasional female Longhorn bee. You can see this veteran’s age from all the hair loss and his ragged wing edges. [Alameda, CA 8-28-25] #bees #nativebees