- Author: Kathy Keatley Garvey
We haven't had a cat since our 16-year-old tuxedo, Xena the Warrior Princess crossed the Rainbow Bridge in March of 2016. She sported a butterflylike marking on her left leg.
Monarch butterflies fascinated her. They brought out "the princess" instead of "the warrior" in her.
If you don't have a cat or a feline pollinator partner, plant milkweed and you'll get another kind of 'cat, the larvae of monarch butterflies, Danaus plexippus.
Today we have several 'cats on our tropical milkweed, Asclepias curassavica, in our Vacaville garden. None this year on our narrowleafed milkweed, A. fascicularis; showy milkweed, A. speciosa; or butterfly weed, A. tuberosa.
If you want to learn more about monarchs, their life cycle, milkweed and other related topics, attend the Bohart Museum of Entomology open house on Saturday, Nov. 4 from 1 to 4 p.m. in Room 1124 of the Academic Surge Building, 455 Crocker Lane, UC Davis. The theme is "Monarchs" and scientists will be there to answer your questions.
The event is free and family friendly and a great opportunity to learn more about D. plexippus.
The scientists will include:
- UC Davis distinguished professor emeritus Art Shapiro of the Department of Evolution and Ecology, who has studied butterfly populations in central California since 1972 and maintains a research website, Art's Butterfly World.
- UC Davis emeritus professor Hugh Dingle, a worldwide authority on animal migration, including monarchs. He is the author of Migration: The Biology of Life on the Move (Oxford University Press), a sequel to the first edition published in 1996. See news story on the UC Davis Entomology and Nematology website.
- UC Davis professor Louie Yang, who does research on monarchs. Due to parental duties, he may be able to attend only the last part of the open house. See news story about his work.
- UC Davis professor Elizabeth Crone of the Department of Evolution and Ecology, formerly of Tufts University, who researches monarchs. See news story about the declining monarch population on the UC Davis Entomology and Nematology website.
The Bohart Museum houses a global collection of eight million insect specimens, plus a living insect petting zoo (Madagascar hissing cockroaches and stick insects, among others), and a insect-themed gift shop. UC Davis distinguished professor Lynn Kimsey has directed the Bohart Museum, founded in 1946, since 1990.
![A monarch caterpillar chomping on showy milkweed, Asclepias speciosa, in a Vacavile garden. (Photo by Kathy Keatley Garvey) A monarch caterpillar chomping on showy milkweed, Asclepias speciosa, in a Vacavile garden. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/102980.jpg)
![Two monarch caterpillars devouring the leaves of a narrowleafed milkweed, Asclepias fascicularis, in a Vacaville garden. (Photo by Kathy Keatley Garvey) Two monarch caterpillars devouring the leaves of a narrowleafed milkweed, Asclepias fascicularis, in a Vacaville garden. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/102981.jpg)
![A very hungry caterpillar on milkweed in a Vacaville garden. (Photo by Kathy Keatley Garvey) A very hungry caterpillar on milkweed in a Vacaville garden. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/102982.jpg)
![A monarch caterpillar and a bee on a tropical milkweed, Asclepias curassavica, in a Vacaville garden. (Photo by Kathy Keatley Garvey) A monarch caterpillar and a bee on a tropical milkweed, Asclepias curassavica, in a Vacaville garden. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/102983.jpg)
![Xena the Warrior Princess (2000-2016) checking out a monarch butterfly in a Vacaville garden. (Photo by Kathy Keatley Garvey) Xena the Warrior Princess (2000-2016) checking out a monarch butterfly in a Vacaville garden. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/102984.jpg)
- Author: Kathy Keatley Garvey
On Friday, Aug. 26, he met with success. He spotted four within half an hour.
It all began with his stroll through the UC Davis Arboretum and Public Garden, "where construction at Wyatt Deck was finally completed and the paths have been reopened," he related in a group email.
"It was my first time there in about 3 weeks. As usual, I scoped out the big Asclepias speciosa clone and found...nothing." He then crossed over Arboretum Drive to the Environmental Horticultural gardens where he knew of another small clone of A. speciosa. "By now it was 4:30 p.m. and the area was in dappled light and shade--and there were two brilliantly fresh-looking male monarchs chasing each other in the trees above the milkweed!"
"I looked over the plants for evidence of larval feeding and found absolutely none; I can't believe they were 'born' there despite being so brilliantly fresh-looking. I then walked west on Arboretum Drive, intending to turn north toward Mrak Hall, when an old, worn male monarch flew directly in front of me near eye level. It was now 4:50.
"As I went to turn toward Mrak (Hall) a fresh-looking one--sex undetermined--was cruising up in the trees near the bridge. I believe I saw four different individuals within half an hour. That's almost as many as I've seen in Davis all year."
Then, on Aug. 29, Shapiro ventured to north Davis where Professor Louie Yang of the UC Davis Department of Entomology and Nematology and collaborators had planted several dozen narrow-leaf milkweed, Asclepias fascicularis, several years ago for their research projects. "Nearly all the plants are in seed; I only found three still in bloom," Shapiro said. "And one had a beautiful, fresh-looking male monarch nectaring at it at 11.55 a.m. I didn't try inspecting all those plants but on casual inspection, I noted no evidence of larval feeding, nor pupae nor pupal exuviae."
That's good news on The Monarch Front.
Shapiro's colleague and former doctoral student Matt Forister, the McMinn Professor of Biology at the University of Nevada, Reno (UNR), alerted him to more good monarch news: "They're passing through Reno with increasing frequency. I am personally seeing ~1 per day now. All stopping for nectar, and heading your way, Art. Looks like the production in the desert has been good." (See latest research by Forister and colleagues on "Milkweed Plants Bought at Nurseries May Expose Monarch Caterpillars to Harmful Pesticide Residues," published in the science journal Biological Conservation.)
As you may know, Shapiro has been studying the butterfly populations at 10 sites in Central California for 50 years and maintains a research website, Art Shapiro's Butterfly Site, aka Art's Butterfly World.
The North American Butterfly Monitoring Network (NABA) website praises his work as "the longest continually running butterfly monitoring project in the world":
"Art Shapiro began monitoring 10 transects in 1972 and has been conducting bi-weekly monitoring of those sites ever since. He also monitors an additional site as part of NABA's Seasonal Count Program! Art's program is the longest continually running butterfly monitoring project in the world, predating even the British Butterfly Monitoring Scheme."
Elsewhere in Davis, Bohart Museum of Entomology associate Greg Kareofelas has seen monarchs in his Davis backyard three times this year: May 6, May 11, and in early June. "A couple of days ago, in the Inner Coast Range, Glenn county I saw nine or ten adults and that many larvae."
![A monarch butterfly nectaring on a showy milkweed, Asclepias speciosa, in Vacaville, California in June, 2016. (Photo by Kathy Keatley Garvey) A monarch butterfly nectaring on a showy milkweed, Asclepias speciosa, in Vacaville, California in June, 2016. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/94670.jpg)
![Bohart Museum of Entomology associate Greg Karoefelas took this image of a monarch in his backyard in Davis on May 6, 2022. (Photo courtesy of Greg Kareofelas) Bohart Museum of Entomology associate Greg Karoefelas took this image of a monarch in his backyard in Davis on May 6, 2022. (Photo courtesy of Greg Kareofelas)](/blogs/blogcore/blogfiles/94674.jpg)
- Author: Kathy Keatley Garvey
Our showy milkweed (Asclepias speciosa) is putting on a show.
The towering plant--a good eight feet--anchors the garden as we patiently wait for monarch butterflies to arrive and lay their eggs.
It's mid-August and it appears the monarchs are not coming here to our little pollinator garden in Vacaville, Calif. Maybe we'll see some during their late summer or early fall migration--on their way to their overwintering sites along coastal California.
Meanwhile, the speciosa has more than its share of lady beetles (aka ladybugs) and aphids.
But now we have a new visitor, well, maybe a permanent resident.
A praying mantis, Stagmomantis limbata (as confirmed by mantis expert Lohit Garikipati, a UC Davis graduate and Bohart Museum of Entomology associate now attending graduate school in Towson University, Maryland) has arrived.
For the first several days, Ms. Mantis hung upside down and did not eat (at least in our presence). She watched the bees buzzing around but made no effort to snag one. We think she was yawning. "Okay, I know you're there. I don't care and I'm not hungry."
Then we found her exoskeleton on one of the speciosa leaves.
A mantid's "skeleton," you know, is outside its body and it's known as an "exoskeleton." It reminds us of a suit of armor, for protection, support and form (is it a "suite of amour" when love abounds?).
A young mantis eats and outgrows its exoskeleton and then it molts (sheds it). Scientists say some species of growing mantids may lose their exoskeletons as many as 10 times.
And, according to Garikipati, a mantis that has just molted may not eat for two or three days.
Did you hear that, bees?
So, bottom line, no monarchs on the milkweed.
But we do have assorted lady beetles, aphids, and one praying mantis and her exoskeleton.
Wait, correct that. Just one mantis. A breeze just swept away the exoskeleton.
![A praying mantis, Stagmomantis limbata, hanging out on a milkweed in Vacaville, Calif. after molting. (Photo by Kathy Keatley Garvey) A praying mantis, Stagmomantis limbata, hanging out on a milkweed in Vacaville, Calif. after molting. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/85606.jpg)
![The exoskeleton that the praying mantis just shed is lying on a milkweed leaf. (Photo by Kathy Keatley Garvey) The exoskeleton that the praying mantis just shed is lying on a milkweed leaf. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/85607.jpg)
- Author: Kathy Keatley Garvey
Dear Ms. Mantis,
We see you. You're trying to camouflage yourself, but we see you.
You're hanging out on a showy milkweed, Asclepias speciosa, trying to catch a butterfly or a bee.
So, will you try to nab a monarch? A Mama Monarch that's trying to lay her eggs on her host plant?
You know, the declining monarch population is on “life support,” as butterfly guru Art Shapiro, UC Davis distinguished professor of evolution and ecology, says.
Ms. Mantis, we remember when one of your kin ambushed a monarch on our butterfly bush in September of 2015. Your kin ate the head, thorax and abdomen and discarded the wings. The wings fluttered to the ground. Yes, we know you have to eat, too. Everything in the garden eats.
But now that we have your attention, Ms. Mantis, would you kindly consider the following menu--à la carte, if you wish?
- Appetizing aphids
- Scrumptious stink bugs
- Magnificent milkweed bugs
- Crunchy cabbage white butterflies
- Luscious leaffooted bugs
Thank you, Ms. Mantis, for your kind attention to this culinary matter. If we may be of any future help in menu planning (it's important to consider the principles of adequacy, balance, calorie or energy control, nutrient density, moderation and variety), please let us know.
Signed,
The Gardeners
![Find the praying mantis! It's on the showy milkweed, Asclepias speciosa. (Photo by Kathy Keatley Garvey) Find the praying mantis! It's on the showy milkweed, Asclepias speciosa. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/85459.jpg)
![A praying mantis lurking beneath a leaf of the showy milkweed, Asclepias speciosa, in a Vacaville, Calif. garden. (Photo by Kathy Keatley Garvey) A praying mantis lurking beneath a leaf of the showy milkweed, Asclepias speciosa, in a Vacaville, Calif. garden. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/85460.jpg)
![Yes, monarchs are on the menu of the praying mantis. They polish of everything but the wings. This archived image is from Sept. 29, 2015. (Photo by Kathy Keatley Garvey) Yes, monarchs are on the menu of the praying mantis. They polish of everything but the wings. This archived image is from Sept. 29, 2015. (Photo by Kathy Keatley Garvey)](/blogs/blogcore/blogfiles/85461.jpg)
- Author: Kathy Keatley Garvey
So here are all these milkweed bugs clustered on a showy milkweed leaf, Asclepias speciosa. It's early morning and the red bugs are a real eye opener.
They're seed eaters, but as Hugh Dingle, emeritus professor of entomology, UC Davis Department of Entomology and Nematology says: "They are opportunistic and generalists." They not only eat seeds, but monarch eggs and larvae, as well as the oleander aphids that infest the milkweed.
But wait, one of these is not like the other.
A lady beetle, aka ladybug, photobombs the scene. It sleeps with them and eats (aphids) with them. They are sharing the same food source: oleander aphids.
Goodbye, aphids!
![bugsquadnewDSC 0074 copy bugsquadnewDSC 0074 copy](/blogs/blogcore/blogfiles/63774.jpg)