- Author: Kathy Keatley Garvey
Those attending the Bohart Museum of Entomology's recent Moth Night learned all about silkworms, moths, cocoons and textiles at a display staffed by Michael "Mike" Pitcairn, a retired senior environmental scientist/supervisor with the California Department of Food and Agriculture.
Mulberry silk production originated in China at least 5000 years ago. Folklore indicates that the wife of a Chinese emperor watched a cocoon fall from a mulberry tree into her teacup. She reportedly watched the cocoon unravel, revealing a long delicate thread. She collected thousands of the threads and made a robe for the emperor.
Biology Professor Richard Peigler of University of the Incarnate Word, San Antonio, donated the items to the Bohart Museum in 2020, said UC Davis Distinguished Professor Emerita Lynn Kimsey, former director of the Bohart. "What's cool about it is," she said, "is that the silk pieces were made from silk produced by multiple silk moth species, not just the one we think of commercially."
The mulberry moth is the primary producer of silk. Tussah is the most well known of the wild silks.
Peigler has worked extensively with wild silk moths, studying their phylogeny, taxonomy and biology. His donations comprise the Wild Silks collection at the McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, University of Florida.
"Wild silk is not nearly as luxurious as domestic silk found in today's clothing industry," the McGuire Center website relates. "This is raw, rough, and textured silk which feels almost paper-like to the human touch. This silk is harvested from the cocoons of various silk moths that encounter little to no human interaction. The practice of producing silk – termed sericulture, stretches back 5 millennia, and astonishingly, is a craft performed to this very day."
They included a woman's chaddar (head covering and shawl) and tablecloths.
Eri Silk (Samia ricini). Displayed was a woman's chaddar of 100 percent eri silk (Samia ricini), handwoven in Assam, India, and of naturally colored yarn. The brocade was done in traditional Assamese motifs. Women in rural villages in Northeast India wear these traditional shawls in winter. Peigler bought the chaddar for $47 from a seller in India in 2019.
Tussah Silk (Antheraea pernyi). Displayed was an antique tablecloth of tussah silk, handwoven in China in the 1920s or 1930s. The tablecloth, hand-reeled and in the natural beige color, is hand-embroidered with mulberry silk (Bombx mori). China has exported thousands of tablecloths and handkerchiefs made of tussah silk (called "pongee" or "Shantng silk") to the United States and the United Kingdom. Peigler purchased this tablecloth in April 2019 from an internet seller in Mount Dora, Fla., for $35.
Also of interest was a sample of tussah silk fabric in a pattern called "Honeycomb," mimicking the hexagonal cells in a bee colony. "The yarns were machine spun and the fabric was machine woven," said Peigler, who purchased the fabric from Oriental Silk Import Co. in Los Angeles for $32.95 per yard. There are several species of tussah silk moths (family Saturniidae) in China, India, Japan, Africa and North America.
Mulberry Silk (Bombx mori). Displayed was a tablecloth created in the early 1900s in China. "It was spun, woven and embroidered by hand," Peigler related.
The Bohart Museum, founded in 1946, is located in Room 1124 of the Academic Surge Building, 455 Crocker Lane, UC Davis campus. It also includes a live petting zoo and an insect-themed gift shop. Director of the museum is Professor Jason Bond, the Evert and Marion Schlinger Endowed Chair of UC Davis Department of Entomology and Nematology, and associate dean, Agricultural Sciences, UC Davis College of Agricultural and Environmental Sciences.
The Bohart Museum is open to walk-in visitors on Tuesdays from 9 a.m. to noon and from 1 to 4:30 p.m. through Aug. 27. It will be closed to the public Sept. 1-22.
The next open house is set for 1 to 4 p.m., Saturday, Sept. 28. The theme is "Museum ABC's: Arthropods, Bohart and Collecting." All open houses are free and family friendly. Parking is also free. For more information, contact bmuseum@ucdavis.edu or access the website at https://bohart.ucdavis.edu.
- Author: Kathy Keatley Garvey
Meanwhile, here's another look at the Bohart Museum of Entomology's 2024 Moth Night, which drew widespread interest.
No one knows exactly how many moth events took place across the nation during National Moth Week, just as no one can predict how many species of moths and other night-flying insects will come to your porch light at night, or to your blacklighting display (UV light illuminating a hanging white sheet).
"Scientists estimate there are at minimum 150,000 moth species, and some believe that there could be over 500,000! Moths have been found that are small as a pinhead and as large as an adult-human's hand," according to NationalToday.com. "But of course, it's the incredibly complicated wing colors and patterns that make them especially dazzling."
A New Jersey non-profit organization, Friends of the East Brunswick Environmental Commission, launched the national event in 2012. The organization is dedicated to the conservation and promotion of the local environment.
The Bohart Museum's global collection of 8 million insects includes some 825,454 specimens of moths and butterflies, including 618,750 moths, ranging in size from the huge Atlas moths (10-inch wingspan) to the extremely tiny (4 mm wingspan) leafminer moths, says Jeff Smith, curator of the Lepidoptera collection. He and Bohart associate Greg Kareofelas showed dozens of moth specimens and answered questions.
What moths were drawn to the blacklighting display? (See list on Bug Squad blog). Retired UC Davis staff associate John "Moth Man" De Benedictus and his colleagues set up the blacklighting display. UC Davis doctoral student Iris Quayle fielded questions about the differences between moths and butterflies (See Bug Squad blog).
In today's blog, we share images of
- Moth-er Volkmar Heinrich, UC Davis associate professor of biomedical engineering
- Moth-ers UC Davis doctoral candidate Peter Coggan and his father, Pete Coggan of Minnesota (See Bug Squad blog)
- UC Davis student Kaitai Liu who showed stick insects and Madagascar hissing cockroaches from the live petting zoo
- UC Davis graduate student Riley Hoffman and fellow Bohart volunteer Barbara Heinsch, who staffed the family arts-and-crafts table.
Light Pollution. The Coggans answered many questions about light pollution. "Most organisms have come to rely on nighttime darkness for knowing when to reproduce, preparing for the winter, and moving around their environment," commented UC Davis doctoral student Peter Coggan. "The Industrial Revolution Artificial Light At Night (ALAN) has become a major conservation issue, disorienting and confusing countless species, often resulting in death. ALAN often kills or displaces organisms like bats, moths, and fireflies, making our nights less bio- diverse and more mosquito filled."
"Not only does it alter animal behavior but ALAN also has been linked to many human health issues like depression, obesity, and cancer," he said. "Although not widely known, ALAN is one of the easiest environmental crises to solve. Raising awareness and getting communities to reduce their light usage can solve the issue overnight and bring back the animals of darkness and the stars back to them."
The Bohart Museum's Moth Night also featured a display of various silk textile and cocoons, donated to the museum by Professor Richard Peigler of the University of the Incarnate Word, San Antonio. Bohart associate Mike Pitcairn, retired senior environmental scientist and supervisor, California Department of Food and Agriculture's Biological Control Program, staffed the table. (See more in upcoming Bug Squad blog.)
The Bohart Museum, founded in 1946, is located in Room 1124 of the Academic Surge Building, 455 Crocker Lane, UC Davis campus. Director of the insect museum is Professor Jason Bond, the Evert and Marion Schlinger Endowed Chair of UC Davis Department of Entomology and Nematology, and associate dean, Agricultural Sciences, UC Davis College of Agricultural and Environmental Sciences.
The open houses are free and family friendly. The next open house is on Saturday, Sept. 28 from 1 to 4 p.m. The theme: "Museum ABC's: Arthropods, Bohart and Collecting." Access the website at https://bohart.ucdavis.edu or email bmuseum@ucdavis.edu for more information.
- Author: Kathy Keatley Garvey
That was a key question asked at the Bohart Museum of Entomology's annual Moth Night, held both indoors and outdoors on the UC Davis campus on Saturday, July 20.
Doctoral student Iris Quayle of the laboratory of Professor Jason Bond, director of the Bohart (and the Evert and Marion Schlinger Endowed Chair of UC Davis Department of Entomology and Nematology, and associate dean, Agricultural Sciences, UC Davis College of Agricultural and Environmental Sciences), staffed a station explaining the differences.
Some major points:
- Both butterflies and moths are members of the order Lepidoptera and both are pollinators.
- Both go through a complete metamorphosis, from egg to larva (caterpillar) to pupa to adult. Butterflies pupate in a chrysalis while a moth pupates in a cocoon.
- A butterfly's antennae have club-like tips whereas moths have feathery, thick, comb-like antennae.
- Butterflies are diurnal or active during the day, while moths are generally active at night. But some moths, including the white-lined sphinx moth, are both diurnal and nocturnal (active at night).
- Generally, a butterfly's wings are brightly colored and moths are dull in color, but not always. Some moths, such as the Ranchman's tiger moth, are beautifully colored.
Globally, scientists have described about 18,000 species of butterflies and 180,000 species of moths, "and hundreds of newly named species are added every year," according to Jeff Smith, curator of the Lepidoptera collection at the Bohart. "It's also believed that we may know of no more than 10-15 percent of the species actually out there, with the small 'micro-Lepidoptera' likely with over 90 percent of the species in the world still unknown. This emphasizes the importance of preserving natural environments so things don't go extinct before we can ever recognize their importance to the Earth and their relationships in their habitats."
The Bohart Museum's global collection of 8 million insects includes some 825,454 specimens of moths and butterflies, including 618,750 moths, ranging in size from the huge Atlas moths (10-inch wingspan) to the extremely tiny (4 mm wingspan) leafminer moths.
Founded in 1946, the Bohart Museum is located in Room 1124 of the Academic Surge Building, 455Crocker Lane, UC Davis campus. The open houses are free and family friendly. The next open house is on Saturday, Sept. 28 from 1 to 4 p.m. The theme: "Museum ABC's: Arthropods, Bohart and Collecting." Check out the website at https://bohart.ucdavis.edu or email bmuseum@ucdavis.edu for more information.
- Author: Kathy Keatley Garvey
So much to see and do, and so many moth experts will be on hand to answer your questions.
It's all in keeping with National Moth Week.
The event, free and family friendly, will take place inside and outside the Bohart Museum, located in Room 1124 of the Academic Surge Building, 455 Crocker Lane, UC Davis, as well as in the hallway of Academic Surge,and outside.
Moth'ers Peter Coggan, a doctoral student in the laboratory of Santiago Ramirez, UC Davis Department of Evolution and Ecology, and his father, Peter Coggan of northern Minnesota, and active in the Minnesota chapter of National Dark Skies, will staff a moth sensory booth.
Together they can address such topics as moth sensory biology, husbandry, trapping, and light pollution.
The younger Coggan, a member of the UC Davis Population Biology Graduate Group, was born and raised in Boulder, Colo., where he developed a love for biodiversity in the surrounding mountains. He is broadly interested in how sensory processing shapes memory formation and other cognitive traits. He is currently investigating "how hover flies decide which flowers to visit based on innate color preference and learned odors." He began conducting research in high school and has participated in projects from cancer diagnostics to waste water management. He received a bachelor of science in biology from Case Western Reserve University, Cleveland. As an undergraduate, he worked with Dr. Mark Willis and studied how moths perceive smell while moving through a complex environment. Coggan anticipates a career in academia and "to continue to raise awareness about invertebrates."
Jeff Smith, curator of the Lepidoptera collection, and Bohart associate Greg Kareofelas will show moth specimens and answer questions. The Bohart Museum's global collection of 8 million insects includes some 825,454 specimens of moths and butterflies, incluing 618,750 moths, ranging in size from the huge Atlas moths (10-inch wingspan) to the extremely tiny (4 mm wingspan) leafminer moths.”
Moth'er Volkmar Heinrich, UC Davis associate professor of biomedical engineering, will be displaying his images of moths and answering questions.Silks of the world also will be displayed, announced Tabatha Yang, education and outreach coordinator.
In the hallway, visitors can view wing scales and antennae through microscopes at a table staffed by Iris Quayle, doctoral student in the lab of Professor Jason Bond, director of the Bohart Museum, the Evert and Marion Schlinger Endowed Chair, UC Davis Department of Entomology and Nematology, and associate dean, Agricultural Sciences, UC Davis College of Agricultural and Environmental Sciences.
The petting zoo, featuring Madagascar hissing cockroaches and stick insects, also is scheduled to include Polyphemus caterpillars, "if they haven't all pupated," Yang said. The caterpillars will turn into silk moths. Staffing the petting zoo are UC Davis undergraduate student Kaitai Liu and doctoral candidate Emma Jochim of the Bond lab.
The family craft activity will involve making caterpillar stress balls in a cocoon bag, donned with leaves on the outside.
A free public snack of hot chocolate and cookies will be offered, Yang said.
Outside on the grounds, Bohart research associate John "Moth Man" De Benedictus and his colleagues will set up a blacklighting display (a white sheet and a UV light to attract moths and other night-flying insects). De Benedictis has amassed a moth collection of some 600 species from the Stebbins Cold Canyon Reserve and 300 species from his backyard in Davis. He received a grant from the former Institute of Ecology to study moths at the Stebbins Cold Canyon Reserve where he collected from 1989 until the last major fire in 2020.
“I began a similar inventory of the species in my backyard after I purchased my home in 1998," De Benedictis said. "It continues to this day, and a synoptic collection of the 300 or so species that I've collected in my yard is housed alongside the Cold Canyon collection in the Bohart Museum.” Graduate student Grace Horne of the lab of urban landscape entomologist Emily Meineke, Department of Entomology and Nematology, is analyzing the data from these studies as part of her doctoral research.
DeBenedictus retired in 2001 from the UC Davis Department of Entomology and Nematology, where he worked as a staff research assistant from 1995 to 2001 in the laboratory of medical entomologist Tom Scott. De Benedictis, who holds a master's degree in entomology from UC Berkeley, studied with noted professor Jerry Powell (1933-2023), emeritus director of the Essig Museum of Entomology.
Worldwide, scientists have described about 18,000 species of butterflies and 180,000 species of moths, "and hundreds of newly named species are added every year," Smith said. "It's also believed that we may know of no more than 10-15 percent of the species actually out there, with the small 'micro-Lepidoptera' likely with over 90 percent of the species in the world still unknown. This emphasizes the importance of preserving natural environments so things don't go extinct before we can ever recognize their importance to the Earth and their relationships in their habitats."
- Author: Kathy Keatley Garvey
If you attend the Bohart Museum of Entomology's annual Moth Night celebration, affiliated with National Moth Week, you'll meet John De Benedictis, better known as “The Moth Man.”
The indoor-outdoor event, free and open to the public, is set from 7 to 11 p.m., Saturday, July 20 in Room 1124 of the Academic Surge Building, 455 Crocker Lane.
De Benedictis and his colleagues annually set up a blacklighting display, using UV lighting to attract moths and other night-flying insects. He has blacklighted for 37 years.
His moth collection of some 600 species from the Stebbins Cold Canyon Reserve and 300 species from his backyard in Davis is housed in the Bohart Museum.
"Jerry Powell (the late UC Berkeley professor and director of the Essig Museum of Entomology) once estimated that there are about 17,000 North American butterflies and moths," De Benedictus commented. "I would not be surprised if it's closer to 20,000."
'Expertise in Moth Identification Is Invaluable'
"John has been great volunteer and supporter of the Bohart Museum," said UC Davis distinguished emerita professor Lynn Kimsey, former director of the Bohart Museum. "His expertise in moth identification is invaluable and now that Jerry Powell is gone, there's really no one else who can identify moths, particularly little brown moths (LBMs) of California."
De Benedictis, a research associate at the Bohart Museum, is closely linked to UC Berkeley, his alma mater, and UC Davis, where he retired. He holds a bachelor's degree in biology, with an emphasis in entomology (1979), and a master's degree in entomology (1998) from UC Berkeley. "Jerry was my major professor and also recruited me as an undergraduate to work in his lab."
A UC Davis retiree since 2001, De Benedictis worked as a staff research assistant from 1995 to 2001 in the laboratory of medical entomologist Tom Scott, UC Davis Department of Entomology and Nematology.
"I came to Davis in 1989 for a two-month job to key out aphids for Beth Grafton-Cardwell, who at that time was a postdoc of (Professor) Jeffrey Granett. During that time, the rootstock that was being used to protect wine grapevines from grape phylloxera began to fail in Napa and Sonoma counties, so I was able to prolong my stay at Davis through a series of grants to address that problem. While working for Beth and Jeffrey, I got a mini-grant from the former Institute of Ecology to study moths at the Stebbins Cold Canyon Reserve where I collected from 1989 until the last major fire in 2020."
“I began a similar inventory of the species in my backyard after I purchased my home in 1998," De Benedictis said. "It continues to this day, and a synoptic collection of the 300 or so species that I've collected in my yard is housed alongside the Cold Canyon collection in the Bohart Museum.” Grace Horne of the lab of urban landscape entomologist Emily Meineke, Department of Entomology and Nematology, is analyzing the data from these studies as part of her doctoral research.
When Children Were 'Free-Range'
John traces his interest in entomology to his childhood. Born in Oakland in 1945, the second of six children on Aldo and Eleanor De Benedictis, he grew up in Berkeley.
“I am grateful that I had parents who not merely tolerated but encouraged our activities and to have grown up in an era when chickens were confined and children were free-range rather than the reverse as is the case today.”
“I attended Berkeley public schools and later UC Berkeley, except for my last year of junior high school which was in Mt. Vernon, N. Y., while my dad was temporarily transferred,” De Benedictis said. “My older brother Paul was keenly interested in natural history, which switched from subject to subject whenever a new Golden Nature Guide came out. We spent much of our free time poking around in the East Bay Regional Parks and in Strawberry Canyon behind Berkeley's Central Campus.” (Paul went on to obtain a doctorate in ecology in Michigan.)
While in the fourth grade, John began “collecting butterflies, a few flashy moths, and other insects with my older brother and a couple of classmates. A highlight of my youth was the return trip from New York by car where we chased butterflies that we never saw in New York or in California as often as we could complain long and loud enough to make my dad stop the station wagon.”
When John was attending junior high in the late 1950s, he found a Polyphemus moth under a streetlight on the UC Berkeley campus. “It was a highly prized find. At UC Berkeley, we collected on spring field trips with the systematics professors and students and we---whoever was participating--ran lights on during our spruce budworm field trips. I ran a sheet a few times on San Bruno Mountain on my own and was surprised to find that very few of the moths that I had reared from caterpillars flew to my light. While in grad school and afterwards, I went on a few of Jerry Powell's trips to the California Channel Islands to assist him in his inventory of the islands' Lepidoptera species. There we ran lights and set out light traps when it wasn't too cold and windy.”
Species Named for Him
De Benedictis recalled that he and Dave Wagner, now a professor at the University of Connecticut, started graduate studies with Powell at UC Berkeley at the same time. "Jerry had a long-term project studying larval host plants of caterpillars, and Dave and I were among the succession of students who took care of his larval rearing lots on the Berkeley campus. Dave went on to become the current authority on the caterpillars of large moths. I was more interested in smaller moths and prolonged my graduate years by collecting caterpillars on San Bruno Mountain by the San Francisco Airport.” There De Benedictis discovered a handful of new species, one of which Powell named Gnorimoschema debenedictisi.
“The Mid-Winter Gathering is a legacy of Jerry Powell,” said De Benedictus, who spent more time in the field with Powell than any other UC Berkeley graduate student. "I was privileged to be Jerry's student and lucky to have him become my friend."I
In a tribute to Powell, the Essig Museum wrote: "Jerry's rearing program was the most extensive in the history of the study of New World Microlepidoptera. For over 50 years he and his students processed more than 15,000 collections of larval or live adult Lepidoptera. Resulting data encompass more than 1,000 species of moths, through rearing either field-collected larvae or those emerging from eggs deposited by females in confinement. This total includes more than 60% of an estimated 1,500 species of Microlepidoptera occurring in California."
Powell and Paul Opler, two Lepidoptera legends, co-authored Moths of Western North America.