Pollinator Post 3/26/23 (1)

Q: Thank you to…

May Chen, for allowing her work to be made available to the general public on the Bringing Back the Natives Garden Tour’s website. David Faden , for solving the technical aspects of how to get the Posts, which were in an invite-only email Google Group, onto the Tour’s website. This was complicated, as you can see here . Jeffrey Samorano , owner of Fearless Digital Journey, for integrating the posts into WordPress and making them functional and attractive. Michael May , Clytia Curley , and Robin Mitchell for their help with earlier versions of this project. It was a pleasure working with all of them on this project.

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The large Common Fiddleneck, Amsinckia intermedia that grows on the side of the paved road to the Water Tank looks less than happy this morning. I notice a general white cast over the plant, and stop to investigate. Has the plant been infected with

powdery mildew?

The leaves of Common Amsinckia naturally bristle with stiff white hairs. But mixed in with the hairs now are little milky droplets. That’s not powdery mildew, a fungal infection. Honeydew then? I remember photographing a couple of tiny aphids on this plant a while ago.

Honeydew – Entomologists’ glossary – Amateur Entomologists’ Society (AES)

The white droplets are especially numerous at the base of the inflorescences.

Is that green aphid excreting a drop of honeydew from its anus?

There’s a handful of similar aphids tucked between the flower buds.

That big one with the dark wing pad appears to be an immature alate. These are the smallest aphids I have ever seen, barely visible to the naked eye. They seem to be quite mobile, not stuck in place with their mouthpart sunk into plant tissues like the other aphid species I know. And they have very short cornicles (those “tail pipes” that define aphids).

Cornicle – Wikipedia

There, the aphid is moving around the flower buds. See those dark stubs on its abdomen, the cornicles?

There’s an aphid in the space between the leaves. Has it just given birth to a baby?

Now it is looking straight at the camera. OK, there’s no doubt that the plant is infested with aphids. But where are the aphid predators?

It takes me a while to find them. Some California Lady Beetles, Coccinella californica (family Coccinellidae) are milling around at the base of the plant. There’s even a pair mating. Both adult and larval lady beetles are voracious predators of aphids. It would be fun to observe the insect interactions on the plant from now on.

How do the beetles know to gather here for the feast? When plants are attacked by herbivores, most can send out SOS by releasing volatile chemicals into the air to summon the predators and/or parasitoids of the herbivores. The messages can be quite specific. In some cases, the predators simply home in on the chemicals released by damaged plant tissues. Lady beetles are known to be able to detect the specific odor of honeydew excreted by the aphids. Honeydew volatile emission acts as a kairomonal message for the Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae) | Request PDF

Mother Nature takes care of everything!

Curious about the Pollinator Posts?

Who created the Pollinator Posts?Jeffrey Samorano2025-12-09T10:27:17-08:00

Who created the Pollinator Posts?

The Pollinator Post is a photo journal created by May Chen, a local naturalist. It started many years ago, as simple e-mails sharing the excitement of discovery with fellow hikers and gardeners. The burgeoning readership eventually necessitated the creation of the Google Group, the Native Gardeners three years ago. Now the journal has found a permanent home at our website, with easy access to all. Let May guide you through the miniature world of the creepy crawlies, regaling you with the drama that is happening right under our noses. Enjoy!

May likes to describe herself as a career volunteer. She has been a docent at Martin Griffin Preserve in West Marin for more than 20 years. Her passion for plants and insects has led her naturally to the study of pollination biology. She has taught docent-training classes on pollination at the Regional Parks Botanic Garden. As a volunteer with the Friends of Sausal Creek, May has helped in the native plant nursery and tended the BridgeView Pollinator Garden. She enjoys exploring the East Bay parks and gardens, and shares her observations on the Pollinator Post.

Because of her initial focus on pollinators, especially bees, May has titled her missives “Pollinator Post”. However, over the years of observation, she realized that we should view the botanical world as an interconnected whole that embraces other plant-insect interactions that are often overlooked – e.g. predator/prey, decomposer/recyclers, host/parasites, each contributing to the health and stability of the collective. Too often we are quick to judge insects as “good” or “bad”, ignoring their true roles in the ecosystem. We need to understand these relationships if we were to be good stewards of our gardens, our farms and wild lands.

To see more of May’s work, see the following article and videos:

The Buzz in My Garden by May Chen, originally published in the Regional Parks Botanic Garden quarterly newsletter Manzanita in 2018

Life and Death on Milkweed

Life and Death on Silverleaf Lupine

How were the photos taken?Jeffrey Samorano2026-01-06T09:08:09-08:00

How were the photos taken?

The photos in the older Pollinator Posts were taken with a series of Canon Power Shot point-and-shoot cameras with built-in macro capabilities. Once May discovered the amazing convenience of the iPhone camera in 2019, she gave away all her other camera equipment. Since then she has taken all her photos with her trusty iPhone 11Pro. The close-ups are taken with a Sandmarc attachable 10X macro lens. “Anybody with a cell phone can do it!”

There are countless other attachable macro lens available on Amazon, some as inexpensive as $30, that also work well. In fact, here’s one recommended by a bee enthusiast friend, Emil. The disadvantage of this lens, when compared to the Sandmarc, is that it clips on, and the clip could get in the way.

In what area, locations, and when were the photos taken?Jeffrey Samorano2025-12-08T15:17:07-08:00

In what area, locations, and when were the photos taken?

The photos in the Posts were taken in the East Bay of the San Francisco Bay Area; they were taken at Crab Cove and Bay Farm Island in Alameda, Skyline Gardens and the Bridgeview Pollinator Garden in Oakland, Mendocino Park in Richmond, numerous sites in the East Bay Regional Park District, such as the Regional Parks Botanic Garden, and Inspiration Point, other open space areas in Alameda and Contra Costa counties. and occasionally at private gardens, among other locations..

The Pollinator Posts began on July 12, 2019. Post creation is paused at the end of each year, during the quiet time for insects, and resumes in the following spring.

How can the Posts help me garden for wildlife?Jeffrey Samorano2025-12-08T15:16:39-08:00

How can the Posts help me garden for wildlife?

Browse the Posts to see what insects you might look for in your own garden on certain plants at a specific time of year. For example, you could search on “August”, and among the results you’ll see that you could be looking for leaf cutter bees on aster and, early in the morning, male longhorn bees sleeping on buckwheat or tarweed. If you have soap plant (aka soaproot) you might see the caterpillar of the western brown elfin butterfly, or dance flies.

Search on ‘pale swallowtail caterpillar” and you’ll see that it can be found on coffee berry, as can miner bees, hover flies, lady beetles, and more. Try it! Search on “clarkia,” “sunflower,” “gum plant,” or “acmon blue butterflies” and see what you discover!

How can I search the posts?Jeffrey Samorano2025-12-08T15:16:05-08:00

How can I search the posts?

The search engine looks at every word in a post: you can search on an insect, such as caterpillar, a plant, like lupine, a month, or a location.

Can I use the photographs or text in these Posts?Jeffrey Samorano2025-12-08T15:15:11-08:00

Can I use the photographs or text in these Posts?

The photographs and text in the Pollinator Posts are licensed as

CC BY-NC (Creative Commons: Attribution-NonCommercial). Basically, this means that the content can be used by others as long as they properly attribute it to © May Chen, and use it for non-commercial purposes.

Thank you to…Jeffrey Samorano2025-12-09T10:28:01-08:00

Thank you to…

May Chen, for allowing her work to be made available to the general public on the Bringing Back the Natives Garden Tour’s website.

David Faden, for solving the technical aspects of how to get the Posts, which were in an invite-only email Google Group, onto the Tour’s website. This was complicated, as you can see here.

Jeffrey Samorano, owner of Fearless Digital Journey, for integrating the posts into WordPress and making them functional and attractive.

Michael May, Clytia Curley, and Robin Mitchell for their help with earlier versions of this project.

It was a pleasure working with all of them on this project.