Posts Tagged: Art Shapiro
There's a whole lot of crunchin' going on.
The redhumped caterpillar has discovered our redbud tree, which it considers an "all-you-can" buffet.
Now this is a voracious eater on the same scale of a fellow named Joey "Jaws" Chestnut.
Seconds? Yes, please.
Thirds? Of course.
Well, say "when!"
Distinguished by a bright red head and an equally bright red hump behind its head (Joey has neither, by the way), the caterpillar is yellow with red and white stripes. It's about an inch and a half long and can defoliate or skeletonize a leaf faster than you can say "The redhumped caterpillar is a Schizura concinna in the family Notodontidae." (Or “Joey Chestnut ate 54 dogs and buns on July 4, 2010 and took home the Mustard Belt.”)
The redhumped caterpillar is quite fond of redbud leaves but it also takes a liking to liquidambar, walnut and plum leaves, to mention a few.
Noted butterfly expert Arthur Shapiro, professor of evolution and ecology at UC Davis and the person behind "Art's Butterfly World," took one look at my trio of happy campers...er...caterpillars and commented:
"As you can see, they are gregarious and warningly colored. The red hump contains a defensive formic acid gland. They hold their anal prolegs, which are not useful for walking, in the air and thrash their rear ends in unison when disturbed. This is the ONLY defoliator of redbud around here, and is very common."
Shapiro says it also "attacks walnut and a variety of other chemically distinctive trees that other things don't eat, as a rule. The damage is minor, and I strongly advise against spraying; hand-picking can be used if control is deemed necessary, but they feed so late in the season that there is no actual harm to the tree."
No, no harm. Just some skeletonized leaves and leaf stubs.
What's the adult look like?
"The moth is very nondescript," he says. "It holds its wings wrapped around the body cylindrically and looks remarkably like a cigarette butt, though it is probably 'imitating' a broken-off twig. Despite authoritative commentary to the contrary, they have two broods a year here but are usually seen in fall. The species is native on both coasts and oddly absent in most of the mid-continent."
It will be awhile before we see the adults, which are grayish-brownish.
Shapiro says the insects "pupate in litter or slightly below the soil surface and won't hatch until June or so, if true to form."
Meanwhile, it's OTL, followed by OTD and OTB (out-to-lunch, dinner and breakfast).
It's already won the Redbud Belt.
Especially when it nectars from catmint (Nepeta) in the early evening, as the sun drops low in the horizon.
Butterfly expert Art Shapiro, professor of ecology and evolution at the University of California, Davis, says the species was introduced in southern Canada in the 1850s. "The great lepidopterist Samuel H. Scudder traced its spread, but was unable to resolve the history on the West Coast," he writes on the website, Art's Butterfly World.
"It was not in San Francisco in the early 1880s, but was abundant by the time of the earthquake (1906)."
Just look at it now. It's everywhere. In fact, every year Shapiro sponsors a contest to see who can find the first cabbage white of the year in the Davis-Sacramento area.
He usually wins.
But last week, for the first time, we spotted a male Acmon Blue, Plebejus acmon, as identified by noted butterfly expert Art Shapiro, professor of evolution and ecology at UC Davis.
With its wings spread, the blue is dazzling.
Actor William Hurt starred in a 2004 movie, "The Blue Butterfly," but this Acmon Blue butterfly stars in its own galaxy.
Tame that tiger.
Wilton beekeeper Brian Fishback, president of the Sacramento Area Beekeepers' Association, stopped Friday at the Harry H. Laidlaw Jr. Honey Bee Research Facility, UC Davis, and a friendly Western tiger swallowtail greeted him.
At least, it seemed quite friendly.
Fishback and Laidlaw staff research associate Elizabeth “Liz” Frost paused to watch the butterfly (Papilio rutulus) glide in and out of the flower garden in front of the facility.
Fishback held out his hand. The butterfly obliged and touched down for just a moment.
This year is a good year for Western tiger swallowtails.
There’s an outbreak--or an elevated population--in the area, says noted butterfly expert Arthur Shapiro, professor of evolution and ecology at UC Davis. “I’ve seen as many as 11 a day in Davis recently, and the outbreak ranges from as far west as Vallejo and as far east as Reno.”
This is the second year for elevated populations of the tiger, Shapiro says. The epicenter seems to be Davis.The colorful butterfly visits a variety of hosts, including California yerba santa, milkweed, lilies, lilacs, coyote mint, California buckeye, sycamore, privet and sweet gum.
It doesn't mind being around the 6 million honey bees (from 110 hives) in the apiary at the Laidlaw facility, either.
Spreading Its Wing
Sip of Nectar
Call it the "Mournful Dusky-Wing" or the "Sad Dusky-Wing."
Call it what you will, but the Erynnis tristis, a member of the skipper butterfly family (Hesperiidae), is neither mournful nor sad when it's nectaring lavender.
The skipper, distinguishable from other dusky wings by its white fringe, is a frequent floral visitor.
As a caterpillar, its host is oak, including Valley Oak and Cork Oak, says UC Davis butterfly expert Art Shapiro, professor of evolution and ecology.
Compared with other butterflies, including the Western Tiger Swallowtail, "E. T." is not the most beautiful of butterflies.
It doesn't stand out in the crowd. But it does stand out in the lavender.