Posts Tagged: aphids
Mother's Day, insect-style, dawned like any other day. In our back yard, golden honey bees foraged in the lavender and those ever-so-tiny sweat bees visited the rock purslane.
The honey bees? Those gorgeous Italians.
The sweat bees? Genus Lasioglossum, as identified by native pollinator specialist Robbin Thorp, emeritus professor of entomology at UC Davis. He figures the female sweat bee (below) may be L. mellipes, which is brownish toward the tips of the hind legs.
A trip to Benicia yielded a photo of a ladybug chasing aphids. It was almost comical. A fat aphid appeared to be playing "King of the Hill" while other aphids sucked contentedly on plant juices, unaware of pending predators.
While the aphids wreaked havoc on a very stressed Escallonia (fast-growing hedge in the family Escalloniaceae), the ladybugs, aka lady beetles, wreaked havoc on some very stressed aphids.
After all, "stressed" spelled backwards is "desserts."
Italian honey bee foraging on lavender. (Photo by Kathy Keatley Garvey)
Sweat bee (genus Lasioglossum) visiting rock purslane. (Photo by Kathy Keatley Garvey)
Ladybug, aka lady beetle, chasing aphids. (Photo by Kathy Keatley Garvey)
"You can never be too rich, too young, too blonde or too thin," a quote often attributed to Wallis Simpson, Duchess of Windsor.
Well, you can never have too many ladybugs, aka lady beetles, in your garden.
These colorful beetles devour aphids and other soft-bodied insects. It's a war of the predators and their prey.
Fortunately, when there are scores of aphids sucking the very lifeblood out of your plants, you're likely to see both ladybugs AND soldier beetles. Both like to dine on aphids.
Soon the ladybugs and soldier beetles do what comes naturally. (Unfortunately, so do the aphids.)
More ladybugs, please! More soldier beetles, too!
Ladybugs and soldier beetles--along with aphids--on a plum tree. (Photo by Kathy Keatley Garvey)
Fast-moving soldier beetle crawls toward a pair of ladybugs on a plum tree. (Photo by Kathy Keatley Garvey)
Ladybug eggs mean more ladybugs. (Photo by Kathy Keatley Garvey)
There's a good reason why lady beetles, aka ladybugs, are prevalent this time of year: aphids.
Ladybugs, from the family Coccinellidae, are actually beetles with voracious appetites for those soft-bodied insects that suck plant juices.
Wherever there are aphids, you'll usually see ladybugs. It may take awhile for the ladybugs to find them, but find them they will.
Two ladybugs converging on a plum tree leaf. (Photo by Kathy Keatley Garvey)
Aphids covering a rosebud. (Photo by Kathy Keatley Garvey)
Ladybugs are easy to "spot."
As soon as the weather warms and those dratted plant-sucking aphids emerge, here come the polka-dotted ladybugs. The prey and the predator. The pest and the beneficial insect. The bad and the good.
Actually, many folks have already reported ladybug sightings. Facebook friends are photographing them and posting macro images. Ray Lopez of El Rancho Nursery in Vacaville said he's seen scores of them this season. The building that houses Fox 40 in Sacramento is resplendent with them.
In fact, tomorrow morning (Wednesday, Feb. 24) senior museum scientist Steve Heydon of the Bohart Museum of Entomology, UC Davis, will be interviewed by Fox 40 on that very subject: ladybugs! Look for a 7:20 a.m. live interview.
An article in today's Science Daily calls aphids "the mosquitoes" of the plant world. That's because they depend on the "blood" of plants to survive.
David Stern, professor of ecology and evolutionary biology at Princeton University, is quoted as saying "Look at this little insect, sitting on a plant and sucking plant juices. You don't realize that it is involved in a historic battle with plants for access to its life blood. All its genes have evolved to allow it to exploit its feeding relationship."
The article, about how an aphid's genome reflects its reproductive, symbiotic lifestyle, points out that an aphid can reproduce both sexually and asexually."
That's certainly a key factor in the aphids' evolutionary success.
All the more for the hungry ladybugs.
So, whether you call them "ladybugs" or "lady beetles" or by their family (beetle) name, Coccinellidae, they're found worldwide, with more than 5000 described species.
And they're coming to a garden near you...
A light rainstorm strikes the garden, pummeling and shredding some of the blossoms.
As the rain lets up, a honey bee buzzes into a rock purslane blossom for a sweet shot of nectar.
She is not alone.
If you look closely, you'll see three green aphids on an unopened blossom next to her.
There are, entomologists say, about 450 different species of aphids in California.
One specie found the rock purslane (Calandrinia grandiflora).
Score: Beneficial insect: 1. Destructive pests, 3.
Aphids and Honey Bee