- Author: Kathy Keatley Garvey
When you're in your garden, look up.
Sometimes you'll see a Gulf Fritillary caterpillar outlined against the sky, munching away on its host plant, the passionflower vine (Passiflora).
The bright orange caterpillars can be as striking as the adults (Agraulis vanillae).
This caterpillar, however, is not the only critter hungry in the Passiflora. We saw evidence that a praying mantis also calls this home. One wing of a Gulf Frit here. One wing of a Gulf Frit there.
Everything eats in the garden.
In a previous Bug Squad, we mentioned that the Gulf Frits are found in many parts of the world and arrived in California (San Diego) in the 1870s, according to butterfly guru Art Shapiro, UC Davis distinguished professor of evolution and ecology. They spread through Southern California in urban settings and were first recorded in the Bay Area about 1908, Shapiro says. They "became a persistent breeding resident in the East and South Bay in the 1950s and has been there since.”
Shapiro says the Gulf Frits “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.”
Yes, they're back and a joy to see.
- Author: Kathy Keatley Garvey
So here's this Gulf Fritillary, Agraulis vanillae, nectaring on a Mexican sunflower, Tithonia rotundifola.
It's National Pollinator Week. All's right with the world. The butterfly had visited a passionflower vine, Passiflora, its host plant.
Now for a little fuel. The nectar is enticing. The Gulf Frit flutters from flower to flower.
And then...it's targeted.
Get off my flower, that's mine! A very territorial male long-horned bee, Melissodes agilis, buzzes past, trying to dislodge the butterfly. Then another male appears. And another.
What's going on? Like frenzied kamikaze pilots, the males patrol the flowers, dive-bombing and dislodging any temporary tenants, in hopes of saving the nectar for the females of their species. And to mate with them.
It works.
After four attacks, the Gulf Frit decides the nectar is not worth it.
- Author: Kathy Keatley Garvey
One point about insect wedding photography is that you don't need an invitation to attend. You just have to keep your distance and not disturb the bridal couple. No sudden movements. No stressful impatience. And no camera flash, please.
It helps, though, if you grow the host plant so a bride and a groom will show up. In this case, we grew passionflower vine (Passiflora), the host plant of the Gulf Fritillaries (Agraulis vanillae).
One morning we saw a butterfly eclose from her chrysalis. Wedding Day! Within minutes, a male suitor arrived.
They became a couple.
Then unexpected guests arrived...a hungry caterpillar munching on the leaves and a second prospective suitor (PS) (rejected) and a third PS (rejected) and a fourth PS (rejected).
PS, leave them alone!
When the "ceremony" ended, the couple simply left. One sipped nectar from the nearby Mexican sunflower, Tithonia rotundifola. The other flew over the fence.
Soon we'll have more eggs, more caterpillars, more chrysalids, and more adults.
Life is like that when you're growing Passiflora and hoping for a Wedding Day.
- Author: Kathy Keatley Garvey
Interviewer: "Hey, Gulf Fritillary! What happened to you? Something take a chunk out of your wings?"
Miss Gulf Frit: "I dunno. I was just fluttering around the passionflower vine and something grabbed me."
Interviewer: "Do you have any idea what happened?"
Miss Gulf Frit: "Sorry, no. It happened so fast but I managed to escape. A miss is as good as a mile, right?
Interviewer (turning to praying mantis): "Ms. Mantis, do you have any idea what happened here?"
Ms. Mantis: "What? You talking to me? You talking to me?"
Interviewer: "Yes, you're the only other one in the passionflower patch."
Ms. Mantis (smiling): "It wasn't me, y'hear. It wasn't me! Okay, well, maybe it was me. I was hungry. I'm still hungry. I missed!"
Interviewer: "Well, a miss is as good as a smile."
- Author: Kathy Keatley Garvey
If you have a passionflower vine (Passiflora), you probably have cats.
No, not the four-legged ones that meow, chase mice or cavort with catnip.
These 'cats or caterpillars are part of the life cycle of the Gulf Fritillary butterflies (Agraulis vanillae) and Passiflora is their host plant.
Watch for the chewed leaves, the frass (poo) and the chrysalids.
Expect a cat-tastrophe when predators like the California scrub jays, European paper wasps, and praying mantids appear and the 'cats disappear.
The circle of life...
