- Author: Kathy Keatley Garvey
The Gulf Fritillary, Agraulis vanillae, and the Mexican sunflower, Tithonia rotundifola, seem made for one another.
Both are a showy orange. Both are show-stoppers. And both attract a photographer's eye.
Especially when a Gulf Frit flutters over a Tithonia on a warm sunny day in a Vacaville garden.
A shutter speed of 1/5000 of a second (Nikon D500 with a 200mm lens) stopped the action.
"This dazzling bit of the New World Tropics was introduced into southern California in the 19th Century--we don't know how--and was first recorded in the Bay Area before 1908, though it seems to have become established there only in the 1950s," writes butterfly guru Art Shapiro, UC Davis distinguished professor emeritus, on his website, Art's Butterfly World. "It can be quite common in the East and South Bay --particularly in Berkeley-- and has been found breeding spontaneously as far inland as Fairfield where, however, it is not established."
Shapiro, who has monitored butterfly populations in Central California since 1972, continues: "There are scattered records in the Central Valley and even up to Folsom, perhaps resulting from people breeding the species for amusement or to release at social occasions. According to Hal Michael, who grew up in South Sacramento, this species bred there in abundance on garden Passiflora in the early 1960s. It seems to have died out by the early 1970s, however. Intolerant of hard freezes, it still managed to survive the record cold snap of 1990 that largely exterminated the Buckeye regionally!"
"This butterfly has no native host plant in California and is entirely dependent on introduced species of the tropical genus Passiflora (Passion Flower, Passion Vine), including the common Maypop (P. incarnata) and P. X alatocaerulea. However, it will not eat all of the Passiflora in cultivation in California."
"In the Bay Area this species can be seen flying any day of the year, if it is warm and sunny enough."
On this day in Vacaville, it was indeed warm and sunny enough: 100 degrees.
- Author: Kathy Keatley Garvey
In its larval stage, it's a pest of cole crops.
As an adult, it's like a little Cinderella.
That would be the cabbage white butterfly, Pieris rapae.
In the fairy tale, a ragged Cinderella lives with her selfish stepmother and two mean stepsisters. Cinderella wants to attend the palace ball, but has nothing appropriate to wear. So her fairy godmother waves a magic wand and transforms her into a beautifully gowned princess, complete with glass slippers. She rides in a magnificent carriage pulled by a team of beautiful horses, dances with the prince, and at the stroke of midnight (when the magic ends), she loses a glass slipper. You know the rest. It all ends with Cinderella and the prince exchanging marriage vows and living happily after.
This butterfly appears in the spotlight every January when UC Davis emeritus professor Art Shapiro hosts his annual "Beer for a Butterfly" contest. Collect the first live butterfly of the year in the three-county area of Sacramento, Yolo and Solano and win a pitcher of beer. (See Bug Squad blog) It's all part of his scientific research long-term studies of butterfly life cycles and climate change.
Meanwhile, we see the cabbage white butterfly fluttering around the garden throughout most of the year, stopping for a little nectar here, a little nectar there.
She still reminds us of Cinderella, with a long flowing gown. Sometimes she looks a little ragged when a predator snatches part of her gown. But her magic never seems to end.
- Author: Kathy Keatley Garvey
There's a good reason why.
Shapiro has monitored the butterfly populations of central California since 1972 and maintains a research site at https://butterfly.ucdavis.edu. "I began doing the 4th of July butterfly count in 1978 and have done it every year since--always on the actual Fourth," he emailed his "posse" today.
"As I read the models, the first week of July this year will be at or near record heat every day," Shapiro wrote. "The maximum should be 108 or 109 on Wednesday, and Thursday the 4th about 106 here (Davis, Calif.)"
"As most of you know, under such heat butterflies go into heat-avoidance mode," he pointed out. "Any data generated after the T (temperature) reaches 100F are suspect. Does anyone record butterfly diversity when things are known to not be flying?"
Shapiro quipped that he knows his limits "and I am not going to push them, even with a supply of intravenous Gatorade. If I do the Willow Slough count it will be after the T retreats to a civilized level, which may not be until about the 9th or 10th."
"At any rate, don't expect a report on Thursday."
Note: You may know Shapiro not only for his incredible butterfly population data, but also for the "Beer for a Butterfly" contest he hosts every year in the three-county area of Sacramento, Yolo and Solano. The first person to net the first-of-the-year cabbage white butterfly, Pieris rapae, and win the contest receives a pitcher of beer or its equivalent. It's all part of his scientific research. P. rapae is emerging earlier and earlier as the regional climate has warmed, Shapiro says. (See Bug Squad post)
- Author: Kathy Keatley Garvey
The Gulf Fritillary, Agraulis vanillae, is definitely back from a comeback, at least in the Sacramento, Davis and Vacaville-Fairfield areas.
In September of 2009, butterfly guru Art Shapiro, now a UC Davis distinguished professor emeritus, excitedly announced the re-appearance of the Gulf Fritillary butterfly in the Sacramento metropolitan area after a four-decade absence, and in the Davis area after a 30-year absence.
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 has monitored the butterfly populations of central California since 1972 and maintains a research website at https://butterfly.ucdavis.edu.
It's a tropical and subtropical butterfly with a range that extends from the southern United States all the way to central Argentina.
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.
A recent piece in The Acorn, published by the Effie Yeaw Nature Center, Carmichael, and authored by UC Davis entomologist Mary Louise Flint (see article), indicated the Gulf Fritillary is doing well in the area.
Good news!
- Author: Kathy Keatley Garvey
A gray butterfly and a fruit fly...
Each has "fly" in its name but one is a member of the order Lepidoptera and the other, order Diptera. Etymology does not agree with entomology.
Ever managed to photograph a butterfly and fruit fly in the same image?
Presenting: a gray hairstreak butterfly, Strymon melinus, and a fruit fly, Neotephritis finalis, an organism commonly known as "the sunflower seed maggot."
They were foraging March 21 in a Vacaville garden on Coreopsis, a genus of flowering plants in Asteraceae.
N. finalis, one of the most commonly seen fruit flies (tephritids) flies in North America. develops in the seed heads of plants in the sunflower family. They're also called "picture-winged flies." BugGuide.net tells us "Wings are mostly dark in apical half with six hyaline spots forming a distinct triangle."
The wings are indeed striking!
But so are the wings of the gray hairstreak butterfly. That orange spot with a black dot on the hindwing probably resembles an eye to a predator.
Butterfly guru Art Shapiro, UC Davis distinguished professor emeritus, says on his research website that the gray hairstreak "is one of the most polyphagous butterflies known, recorded on host plants in many families. Its most frequent hosts in our area are mallows, including the weedy species of Malva; legumes, including Spanish Lotus (Lotus purshianus), Bird's-Foot Trefoil (Lotus corniculatus), White Clover (Trifolium repens) in lawns, Alfalfa (Medicago sativa) and many others; and Turkey Mullein (Eremocarpus or Croton setigerus, Euphorbiaceae)."
Maybe we'll see the butterfly and the fruit fly again...