Posts Tagged: Art Shapiro
The Gulf Frit is definitely back.
Back in September of 2009, butterfly expert Art Shapiro, professor of evolution and ecology at the University of California, Davis, excitedly announced the re-appearance of the Gulf Fritillary butterfly (Agraulis vanillae) in the Sacramento metropolitan area after a four-decade absence, and in the Davis area after a 30-year absence.
It's a tropical and subtropical butterfly with a range that extends from the southern United States all the way to central Argentina.
The Gulf Frit is a beautiful butterfly with bright orange-red wings, spangled iridescent silver on the underside, and a four-inch wingspan.
The larvae or caterpillars of the Agraulis vanillae feed on the leaves of the passion flower vine; they eat "many but not all species of the genus Passiflora," Shapiro says. "There are no native members of this genus in the state of California, but several are widely cultivated in gardens."
No one knows exactly when the first Gulf Frit first arrived in California, but "it was already in the San Diego area by about 1875, Shapiro says, and it was first recorded in the San Francisco Bay Area around 1908.
The showy butterfly colonized both south Sacramento and the Winding Way/Auburn Boulevard area in the 1960s but by 1971 "apparently became extinct or nearly so," recalled Shapiro, who moved to the Davis area in 1971.
The butterfly can breed where there is a "critical mass" of these plants in a town or neighborhood," he told us back in 2009.
Well, there's a thriving passion flower vine behind a west Vacaville residence that makes one think: "Critical mass!"
On one recent sunny afternoon, we spotted about 10 to 12 Gulf Frits breeding on the vine. Squadrons of brightly colored orange and black caterpillars munched on the leaves.
Yes, the Gulf Frit is alive and well.
Very alive and very well.
So if you have a passion for the Gulf Frit, plant Passiflora.
Plant it and they may come.
Gulf Fritillary butterfly on passion flower. (Photo by Kathy Keatley Garvey)
Gulf Frits breeding on passion flower vine. (Photo by Kathy Keatley Garvey)
Hungry caterpillar munching passion flower leaves. (Photo by Kathy Keatley Garvey)
A "squadron" of caterpillars on a passion flower vine. (Photo by Kathy Keatley Garvey)
The Gulf Fritillary butterfly is one of the showiest butterflies in California, says butterfly guru Art Shapiro, professor of evolution and ecology at UC Davis.
Indeed it is.
The bright orange-red butterfly with a wingspan that can reach four inches visited our back yard yesterday. It nectared the lantana and sedum, competing for the sweet treats with honey bees, sweat bees and leafcutting bees.
Last year we planted a passionflower (Passiflora) vine (larval host of the Gulf Fritillary). None came. No butterflies, no breeding site, no little orange-and-black caterpillars to chew the passionflower leaves. We removed the vine and replaced it with vegetables.
The Gulf Fritillary (Agraulis vanillae) is even more beautiful when it folds its wings. Then you can see what makes this butterfly so utterly breathtaking: the iridescent silvery spots.
Shapiro says this is a tropical and subtropical butterfly, with a range extending from the southern United States all the way to central Argentina. It appeared in southern California in the late 1800s, and was first recorded in the San Francisco Bay Area around 1908.
Like to attract this butterfly? Its larval hosts include passionflower vines, such as the maypop (Passiflora incarnata), blue passionflower (P. caerulea), and corky-stemmed passionflower (P. suberosa). As an adult, it nectars on such plants as lantana (Lantana camara), tall verbena (Verbena bonariensis), pentas (Pentas lanceolata), drummond phlox (Phlox drummondi) and something called "tread softly" (Cnidosculous stimulosus).
"Tread softly" is also a good idea if you're trying to photograph it. It's a very skittish butterfly and the slightest movement will prompt it to take off.
But if you wait patiently, the fluttering orange flash will likely return.
Close-up Gulf Fritillary on sedum. (Photo by Kathy Keatley Garvey)
Wingspan of Gulf Fritillary (Agraulis vanillae) can reach four inches. (Photo by Kathy Keatley Garvey)
Leafcutter bee heads for the same nectar spot as the brilliant Gulf Fritillary. Note the iridescent silverly spots. (Photo by Kathy Keatley Garvey)
Collembola! Watch the springtails spring!
Over the last several days, Art Shapiro, professor of evolution and ecology at the University of Caifornia, Davis, has patrolled a UC Davis sidewalk checking out a huge volume of springtails.
"Literally millions of little buff-colored springtails," he related Monday, "have been swarming for the past three days on the sidewalk and adjacent strip under the oak trees on the east side of Howard Way, about halfway between the parking garage and Russell Boulevard, mostly around 7 to 8 a.m. and after 5 p.m. I've never seen such numbers, except for the snow springtails in winter in upstate New York."
I trekked over to Howard Way at 7 a.m. today and it took awhile to find these little buff-colored organisms. That's because they're oh, so tiny! They're less than six millimeters long--that's 0.24 inches in length. And they move fast.
Obviously, Art Shapiro has the eyes of an eagle. I don't.
Springtails (order Collembola) are those primitive, wingless six-legged critters you find in soil, leaf litter, decaying wood and other damp places. Basically, they're known for working the soil. However, some springtails, such as Sminthurus viridis, are agricultural crop pests.
Why are they called springtails? Retired UC Berkeley entomologist Jerry Powell writes in California Insects (a University of California Press book co-authored by entomologist Charles Hogue): "Most springtails are readily recognizable by a forked, tail-like appendage (furcula) which arises toward the rear of the abdomen and which the insect snaps against the substratum, springing itself into the air."
California has about 130 species that spring themselves into the air.
Frankly, it's a wonder anyone can see them, springing or not springing.
A springtail (look to the right of "of") next to a penny. (Photo by Kathy Keatley Garvey)
The springtail is less than 6 millimeters long. (Photo by Kathy Keatley Garvey)
Site of the springtail sightings on Howard Way, looking toward Russell Boulevard on UC Davis campus. (Photo by Kathy Keatley Garvey)
Noted butterfly expert Art Shapiro of UC Davis sees about 40 yellow sulphur butterflies, aka alfalfa butterflies, during alfalfa-cutting time.
We saw one yesterday.
It was fluttering over by the tennis courts, corner of Russell Boulevard and Howard Way, on the University of California, Davis campus.
Shapiro, professor of ecology and evolution, writes on his popular "Butterfly World" website that these yellow sulphur butterflies (Colias eurytheme) reach "very high densities in alfalfa fields in midsummer to autumn."
When the alfalfa is cut, they "may emigrate en masse, even flooding into cities," he says.
"Although it is a significant alfalfa pest, this butterfly overwinters as a larva almost entirely in annual vetch at low altitudes, and colonizes alfalfa only as the vetch senesces in May-June," Shapiro points out. "Aside from alfalfa and annual vetches, it also breeds on a variety of clovers and sweet clovers and occasionally on lupines. It seems certain that the planting of alfalfa has greatly increased its range and abundance."
With these colorful butterflies, they don't stay linger long during their flight of fancy. You have to shoot on the run. Aim, pre-focus, shoot.
And away it flutters.
Yellow sulphur butterfly ready for take-off. (Photo by Kathy Keatley Garvey)
A streak of gray, but don't wash it away.
The gray hairstreak is a butterfly.
We spotted this delicate-looking butterfly (Strymon melinus) on a red pincushion flower (Scabiosa) this week in Winters, Yolo County.
Gray on red. Fauna on flora. A Strymon on a Scabiosa.
Butterfly expert Arthur Shapiro, professor of evolution and ecology at UC Davis, includes hairstreaks in his book, Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions (University of California Press).
If you look on his website, Art Shapiro's Butterfly Site, you can read all about the butterflies he studies.
You'll often see the butterfly on the mallows, Spanish lotus, bird's-foot trefoil, white clover, alfalfa, and scores of other plants. We saw it nectaring on catmint (Nepeta) in our yard.
And on Scabiosa. A Strymon on a Scabiosa.
Gray hairstreak (Strymon melinus) on a red pincushion flower (Scabiosa). (Photo by Kathy Keatley Garvey)
Close-up of a gray hairstreak. (Photo by Kathy Keatley Garvey)