From the over one hundred Cecropia Moth eggs that hatched, only a handful survived. Unfortunately, an earwig ate the caterpillars in their tiny first instar. I keep the tanks on the front porch and even though we use a layer of cheesecloth underneath the screening to help keep pests out, I found an earwig inside the tank.
Because many of the eggs are laid on the side of the tank, there is no safe way to remove and give the eggs away without damaging the eggs. Next year, if we have a good batch of eggs again, I am going to keep the tanks inside until the caterpillars reach their second instar. At that point I’ll be able to safely give the caterpillars away.
So very sorry to disappoint anyone who was interested in raising these beautiful creatures. Hopefully, the few caterpillars remaining will reach maturity and we’ll try again next year 🙂
Over the past week, we have released thirty-one Cecropia Moths. A neighbor over on Harriet Ave photographed a Cecropia Moth and I am wondering if it is one of ours 🙂
To clarify for anyone who may be wondering, Cecropia Moth caterpillars are not like the invasive, non-native Gypsy Moths and Winter Moths, which defoliate trees. Cecropia caterpillars cause very little harm to trees.
Cecropia Moth eggs
We had approximately nine pairs mating and the females deposited a treasure trove of eggs. I have the names of several people who have expressed interest in raising the moths and will contact everyone as soon as all eggs are deposited. Please let me know if you would like to nurture the funniest looking caterpillars that turn into the grandest beauties.
Raising Cecropias is not quite as simple as rearing Monarchs, but it’s not challenging either and is just as interesting and as much fun. This is a fantastic project to do with children. Kids love giant silk moths. The creatures are so large you can easily observe every stage of their life cycle, from egg to caterpillar to pupation to cocoon to adult. Our Charlotte is crazy about Cecropias and looks after them throughout the day. The caterpillars live for about two months. You will need to constantly replenish the leaves as they mature because the later instars are voracious eaters.
After the caterpillar pupates and becomes a cocoon, you’ll need a safe place to keep them where they will experience ambient winter temperatures. We keep ours on our front porch, which is not enclosed, in large glass terrariums (fish tanks) during all four seasons.
Cecropia caterpillars eat the leaves of many trees and shrubs, including alder, ash, birch, box elder, chokecherry, elm, lilac, maple, poplar, Prunus and Ribes species, and willow. Cecropia Moth caterpillars are not like invasive non-native Gypsy Moths and People are always a bit dismayed when I tell them that the adult moth ecloses without mouthparts and cannot eat during its brief lifespan. The adult’s only purpose in life is to mate and lay eggs of the next generation. The males and females only live for about a week or so.
If you are interested in rearing cecropia Moth caterpillars, please read the following two articles to better understand the moth’s life cycle. Contact me at kimsmithdesigns@hotmail.com if you are still interested after reading the articles.
For readers interested in raising Cecropia Moths, I have some eggs. Raising Cecropias is not quite as simple as rearing Monarchs, but it’s not challenging either and is just as interesting and as much fun. The caterpillars live for about a month and you need to constantly replenish the leaves as they mature because the later instars are voracious eaters.
Cecropia Moths Mating – the pair stay coupled together for about a day; the female is on the left, the male, right
After the caterpillar pupates and becomes a cocoon, you’ll need a safe place to keep them where they will experience ambient winter temperatures. We keep ours on our front porch, which is not enclosed, in large glass terrariums (fish tanks) during all four seasons.
Cecropia caterpillars eat the leaves of many trees and shrubs, including alder, ash, birch, box elder, chokecherry, elm, lilac, maple, poplar, Prunus and Ribes species, and willow. People are always a bit dismayed when I tell them that the adult moth ecloses without mouthparts and cannot eat during its brief lifespan. The adult’s only purpose in life is to mate and lay eggs of the next generation. The males and females only live for about a week or so.
It you are interested in rearing cecropia Moth caterpillars, please read the following two articles to better understand the moth’s life cycle. Contact me at kimsmithdesigns@hotmail.com if you are still interested after reading the articles.
Noticeably growing larger day by day, the biggest caterpillar of our batch of Cecropia Moth caterpillars (nicknamed Mothra) still has a ways to go before he/she pupates and becomes a cocoon for the winter.
The colorful protuberances with black spikes are thought to mimic either a poisonous plant or animal and are a defense against predators. Like most caterpillars, the Cecropia moth caterpillar has five pairs of prolegs. The green prolegs are blue at the base with a row of microscopic hooks, or crochets, that enable walking and clinging.
Although the Cecropia Moth has the largest wingspan of any moth found in North America, its caterpillar is not the largest caterpillar. That honor goes to the caterpillar of the Royal Walnut Moth, also called Regal Moth, which in its caterpillar stage is called the Hickory Horned Devil.
Adult Male Cecropia Moth
Thank you again to friend Christine for the Cecropia Moth eggs. The eggs that she gave me are the offspring of the male Cecropia Moth that she is holding in the photo above.
Don’t you love the colors of the third stage, or instar, of the Cecropia Moth caterpillar? Only about an inch and a half long in the photo, in the final fifth instar, before it pupates into a cocoon, the caterpillar will be as large as a large man’s thumb.
In its second instar in the above photo, the caterpillar resembles the developing birch flower catkins. This is an evolutionary form of mimicry against predation by birds. Cecropia Moth caterpillars eat not only the foliage of American White Birch trees, but also other species of birch trees, apple, ash, beech, elm, lilac, maple, poplar, Prunus and Ribes species, white oak, and willow.
First instar Cecropia Moth Caterpillars
Thank you so much again to my friend Christine for the gift of the Cecropia moth eggs.
Considered by many to be North America’s most beautiful insect, a newly emerged Luna Moth will melt the heart of even the most vehement of insectophobes. These male and female pristine beauties were photographed at new friend Jane’s lush garden in Gloucester. Jane, along with her friend Christine (who we met last week), intend to repopulate Cape Ann with members of our native Giant Silkmoth Family. See story here.
In the photo above, the female is in the lower right. You can easily tell the difference because the male has much fuller antennae–all the better to detect the female’s pheromones.
Her abdomen is swollen with eggs. A female Luna Moth will oviposit between 400 to 600 eggs, more during warm weather.
Not quite as large as the Cecropia Moth, nonetheless its wings span nearly four and a half inches. You are most likely to see Luna Moths flying during evening hours and the caterpillars munching on birch leaves, one of their favorite food plants in our region. The adult moths only live for a week and during that time are unable to eat (they emerge without mouthparts). The mature Luna Moth’s sole purpose is to mate and deposit eggs of the next generation.
Many thanks to Christine and Jane for sharing their passion for the gorgeous Giant Silkmoths!
This short film of a Luna Moth in flight was made after finding a Luna Moth at Willowdale Estate. I returned home with the moth and as evening approached it began to quiver and vibrate in preparation for flight. I had been listening to Ave Maria and it was playing in the background so I left it in the video and think the music perfect for this most stunning of creatures.
Jane’s Garden
Rare-for-these-parts Blue Poppy (Meconopsis rudis)
This newly emerged Cercropia Moth, the largest species of Lepidoptera found in North America, was photographed at the home of my new friend Christine. She lives on the backshore of Gloucester and, with her friend Jane, who lives on the opposite side of Gloucester in the Lanesville area, are trying to repopulate Cape Ann with several species of the stunning and charismatic moths of the Saturn Family. These include the Cecropia Moth (commonly called Robin Moth), Luna Moth, and Polyphemus Moth.
Where formerly abundant, these most beautiful members of the native Giant Silkworm Moth group of Lepidoptera are at extreme risk of becoming extirpated (extinct from a region). Christine recalls a time when she could easily find the cocoons in her neighborhood. Now she finds none. The reasons for their decline are severalfold; loss of habitat, the poison in the pesticides sprayed on trees is highly toxic to all insects, and because they are suffering from a parasitism by a tachinid fly (Compsilura concinnata) that was introduced to control the Gypsy Moth. Each and every person on Cape Ann can help these moths make a comeback by making a commitment to not use pesticides and herbicides, for any reason, ever.
Cecropia Moth cocoon
Christine and Jane purchase the cocoons at Magic Wings in Deerfield, MA. They place the cocoons in the screened butterfly house where they have also placed branches of the caterpillar’s food plant (in this case, birch branches). Cecropia Moth caterpillar food plants include the foliage of maple, birch, ash, apple, cherry, and lilac.
If both male and female are present, they will mate almost immediately, within the first day or two, and the female will begin depositing eggs soon after. She releases the eggs on nearly every surface within the enclosure, dozens and dozens of eggs, up to 100!
Cecropia Moth eggs
If the eggs are viable, within several weeks, the caterpillars will chew their way out of the egg casing and begin to eat the caterpillar food plants provided.
Perhaps like Christine and Jane who, moth by moth, are trying to save our native Giant Silkworm Moths, you’ll be inspired to raise these North American beauties, too!
More photos to come if a batch of caterpillars emerges.
Lecture Tuesday night, April 9, at 7:30 at the Manchester Community Center: Oh Garden of Fresh Possibilities! ~ Notes from a Gloucester Garden.
Cabbage White Butterflies Mating in the Native Flowering Dogwood Foliage
The lecture tonight is based on the book of the same name, which I wrote and illustrated. In it I reveal how to create the framework, a living tapestry of flora, fauna, and fragrance that establishes the soul of the garden. Using a selection of plant material that eliminates the need for pesticides and herbicides, and guided by the plants forms, hues, and horticultural demands, we discuss how to create a succession of blooms from April through November. This presentation is as much about how to visualize your garden, as it is about particular trees, shrubs, vines, perennials, and annuals. Illuminated with photographs, and citing poetry and quotations from Eastern and Western cultural influences, this presentation engages us with an artist’s eye while drawing from practical experience.
For a complete lit of my 2013 – 2014 programs and workshops, visit the Programs and Lectures page of my blog.
The Cecropia Moth, or Robin Moth (Hyalophora cecropia) is the largest moth found in North America, with a wingspan of up to six inches. He is perched on the foliage of our beautiful native Magnolia virginiana (Sweetbay Magnolia), one of several of the caterpillar’s food plants. You can tell that he is a male because he has large, feathery antennae, or plumos, the better for detecting scent hormones released by the female. This photo was taken in our garden in early June.
The Manchester Community Center is located at 40 Harbor Point, Manchester.
