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StumbleUponPosts Tagged: Gulf Fritillary
Passionate About the Passionflower Vines
Valley carpenter bees are passionate about passionflower vines (Passiflora).
You see these black bees foraging on the blossoms. Tiny grains of golden pollen, looking like gold dust, dot the thorax.
Their loud buzz frightens many a person, but wait, they're pollinators.
Valley carpenter bees (Xylocopa varipuncta) are found in the Central Valley and southern California, Arizona, New Mexico and southward through Mexico, according to native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis.
These carpenter bees are large (about the size of a queen bumble bee). The females are solid black, while the males are golden/buff-colored with green eyes.
We receive scores of calls about "golden bumble bees." They're the male Valley carpenter bees, sometimes nicknamed "Teddy bears."
The females are the only ones we've seen in the passionflower vines, though.
The males? They must be cruising somewhere else, patrolling for females.
Most of the time we see female Gulf Fritillary butterflies (Agraulis vanillae) laying their eggs on the leaves, and male Gulf Frits searching for females.
A female Valley carpenter bee is covered with yellow pollen. (Photo by Kathy Keatley Garvey)
Female Valley carpenter bee on a passionflower blossom. (Photo by Kathy Keatley Garvey)
That's One Beautiful Butterfly
First the lantana, and then the passion flower vine.
The Gulf Fritillary butterflies (Agraulis vanillae) flutter daily around our backyard. They stop for a little nectar from lantana (family Verbenaceae), and then head over to the passion flower vines (genus Passiflora) to breed or lay their eggs.
You can't miss them. The Gulf Frit is a showy, reddish-orange butterfly. Its underside absolutely sparkles in a spangled iridescent silver.
Butterfly expert Art Shapiro, professor of evolution and ecology at the University of California, Davis, and who maintains the website, Art's Butterfly World, says the Gulf Frit was introduced into southern California in the 19th century and first recorded in the Bay Area "before 1908."
It was once prevalent in the Sacramento area in the 1960s, but seemed to have died out by the early 1970s.
Then in 2009, it began making a comeback in the Sacramento area.
It's definitely making a comeback. A beautiful comeback.
Gulf Fritillary butterfly on lantana. (Photo by Kathy Keatley Garvey)
Another view of the Gulf Fritillary. (Photo by Kathy Keatley Garvey)
Side view (underside) of Gulf Fritillary about to lay an egg on a passion flower vine. (Photo by Kathy Keatley Garvey)
The Wearing of the Orange
It was a perfect St. Patrick's Day--not just for the wearing of the green, but for the wearing of the orange.
The Gulf Fritillary butterfly (Agraulis vanillae) arrived in our yard Sunday afternoon, March 16 and deposited an egg, just like E. Bunny will do soon.
The Gulf Frit's host plant is the Passiflora or passion flower vine. Last winter Jack Frost nipped at the leaves and nearly killed one of our two plants but they're both springing back.
The butterfly first touched down on an Amaryllis (Amaryllis belladonna) before she located the two passion flower vines. Her battle-scarred wings related the story of a close encounter with a bird or other predator.
Once quite common in the Sacramento area in the 1950s and 1960s, the Gulf Fritillary vanished for about 40 years and is now making a comeback. It's a brightly colored orange butterfly with black markings and silvery spangled hindwings.
It's good to see it again!
Gulf Fritillary butterfly touches down on the leaves of an Amaryllis, aka naked lady. (Photo by Kathy Keatley Garvey)
Gulf Fritillary checks out the leaves of a passion flower plant. (Photo by Kathy Keatley Garvey)
Egg of a Gulf Fritillary. (Photo by Kathy Keatley Garvey)
Love Those Gulf Frits
If you're passionate about Passiflora (passion flower vine), you're probably passionate about those Gulf Fritillary butterflies (Agraulis vanillae).
It's November with temperatures in the unseasonal mid-80s, and the butterflies are laying eggs like there's no tomorrow.
From eggs to larvae to chrysalises to adults--what a sight to see.
We watched a caterpillar munch leaves as an ant scooted down to investigate. Then a magnificent adult, its wings fresh and showing no visible signs of predatory bites, fluttered down right in front of us.
Butterfly expert Art Shapiro, distinguished professor of evolution and ecology at the University of California, Davis, calls these butterflies a "dazzling bit of the New World Tropics."
Indeed they are. Orange never looked so good.
Ant investigates a Gulf Fritillary caterpillar. (Photo by Kathy Keatley Garvey)
Gulf Fritillary, Agraulis vanillae, spreads its wings. (Photo by Kathy Keatley Garvey)
The Amazing Gulf Fritillary
The showy reddish-orange butterfly (Agraulis vanillae) is making a comeback in the Sacramento-Davis area. In the early 1970s, it was considered extinct in that area.
“It first appeared in the vicinity of San Diego in the 1870s,” says noted butterfly expert Art Shapiro, distinguished professor of evolution and ecology at the University of California, Davis, and a member of the UC Davis Center for Population Biology. “It spread through Southern California in urban settings and was first recorded in the Bay Area about 1908. It became a persistent breeding resident in the East and South Bay in the 1950s and has been there since.”
Shapiro says it “apparently bred in the Sacramento area and possibly in Davis in the 1960s, becoming extinct in the early 1970s, then recolonizing again throughout the area since 2000.”
Shapiro describes the Gulf Fritillary as “one of the most widespread weedy butterflies in the Americas." However, he points out, it has no “native host plant in California."
Those who want to attract the Gulf Frit can do so by planting its host plant, passion flower vine (tropical genus Passiflora). The butterflies lay their eggs on the plant and voila! Leaf-munching caterpillars. Shapiro points out that the Gulf Frit caterpillars "will not eat all of the Passiflora in cultivation in California." They can be particular.
One of the Gulf Frit's favorite nectar sources is lantana (genus Lantana, family Verbenaceae.)
The Gulf Frit "has no diapause and is subject to killing out by hard freezes; in my experience, 22F is completely lethal to all stages," Shapiro says. "It has been bred for release at weddings, garden parties and the like, but there is no direct evidence linking its return in this region to such activities. If gardeners find it a pest on their Passifloras it is easily controlled by hand-picking or BT (Dipel), but it seems, to judge by my email, that most people are thrilled and delighted to have it in the garden."
Shapiro and two co-authors recently published a paper in the Journal of Biogeography (J. Biogeog.39: 382-396, 2012) on the pylogeography (geography of molecular-genetic variation) of widespread Western Hemisphere human-associated butterflies. The reearch is the work of Erik Runquist, UC Davs Department of Evolution and Ecology; Matthew Forister of the Department of Biology, University of Nevada; and Shapiro.
"We had suspected the Gulf Frit might be introduced in the United States but the genetics show not only that it is not, but that it is apparently two species--one entirely South American and one North American--but we have made no move to name anything!"
It's interesting that another host specialist butterfly, Cacyreus marshallili, a native of South Africa, is becoming a pest of garden geraniums (Pelargonium) in Europe, where "there are no native Pelargoniums," Shapiro says. "The butterfly (known as the Geranium Bronze) is becoming a real threat to the tradition of having geraniums in window boxes. Some European butterfly folks like its presence--unless they grow geraniums."
The silver-spangled underside of the Gulf Fritillary, shown here nectaring lantana. (Photo by Kathy Keatley Garvey)
Gulf Fritillary shows its familiar colors. (Photo by Kathy Keatley Garvey)
Gulf Fritillary spreading its wings on lantana. (Photo by Kathy Keatley Garvey)
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