Posts Tagged 'ladybugs'

USDA Prime

Harmonia axyridisNot only does the Multicolored Asian Ladybeetle (Harmonia axyridis) come in multiple colors, they’re also found with a variable number of spots. Or none at all. That’s me in the reflection of those high-gloss elytra.

(Post title refers to the first release of the species in the U.S., which was done by the USDA. Subsequent releases may have been accidental.)

Twenty-Spotted

Psyllobora vigintimaculataOn the veldt of my arm, a tiny lady beetle that turned out to be the 20-spotted, Psyllobora vigintimaculata. Found throughout most of the US, barring FL and the SE coast, and into Canada. Unlike most lady bugs, carnivorous-chompers if there ever were any, the Pysllobora genus ladies are fungus-eaters. The “Latin” name of the genus is actually Greek and means “flea [of the} north”. It was awfully small, perhaps 3mm long, the smallest lady beetle I’ve ever seen. Light enough to start crawling up one of my arm hairs. I was sitting by the Hudson River in Battery Park City when I noticed it landing on me. Psyllobora vigintimaculataA handsome example with the orange, black, and white markings. They come in quite a range of variations. (And all, I’ll wager, a challenge to half-century old eyeballs: I took these pictures with the phone)

Brooklyn’s Two-Spotted Continue

Two years ago, I stumbled upon some unfamiliar ladybugs. There were Two-spotted (Adalia bipunctata), which turned out to be rather rare. It was the first Brooklyn report for the species. Last summer, the site was inaccessible to civilians because of construction. This weekend I took a look at the trees, as I usually do. They have been quite active with Multicolored Asian Ladybugs (Harmonia axyridis) for the last couple of weeks. But hello! Something different from the very round, very large (for a ladybug) H. axyridis, a nuisance species, if not worse, spread by gardeners and garden-suppliers. Indeed, many think the spread of these beetles has been the cause, or one of the causes, of the decline of the likes of A. bipunctata and other now rare native species. Adalia bipunctataBut the Two-spotted is still in town. Adalia bipunctataWhile trying to get a live photo, the beetle flew down to my camera lens, so I snapped this pic with my phone.

From the Lost Lady Project, I’ve learned that A. bipunctata has been reported at four New York State sites. Like many native species, it has been declining in numbers for the last twenty years or more. The location here is tiny, just a few trees, and isolated from other bits of green. It shows the importance of having a variety of trees and plants in as many places as possible. But this location is much busier with humans than it used to be…

Only three other places in New York! This isn’t to say there aren’t more places, which haven’t been discovered because there aren’t as many people looking for lady beetles as, say, there are people enabling FIFA’s looting, and/or staring at their toenails, but it does suggest their specialness. Adalia bipunctataSpeaking of nails. The Two-spotted comes in a variety of color forms. This one, found at the same time, is particularly striking.

Lady-like

Harmonia axyridisThe Catalpa trees — both the Northern Catalpa (C. bignonioides) and the Southern (C. speciosa) are found in the park — are ladybug magnets. The large heart-shaped leaves are often sticky, perhaps from the excretions of aphids, a favorite ladybug food. Right now, the nymph stages of the lady beetles, these small but frightful looking creatures, are out and about. This is one of the Multicolored Asian Ladybeetle (Harmonia axyridis). Here’s a passel of them in their pupal stage, transforming into adults under a Catalpa leaf:Harmonia axyridisMetamorphosis is so wonderfully strange (to this mammal, anyway): the nymphs, which are actually larger than the adult, will completely transform into the more familiar round red (and other colored) beetles, their bodies chemically broken down and reformed while they are inside the pupa.lb1An earlier instar of the all too-common MAL? (This one is on a milkweed.) Ladybug nymphs typically have four instars, or stages, which they molt through as they grow.

Once emerged, the adult beetle will harden, darken, and get spotted. Here’s another adult on a Catalpa leaf so sticky it’s glistening:Harmonia axyridisThe pale things are aphids.

Bugs and Blooms, Finally!

bug1

bug2

bug3Aphids feasting on plant juices, a 14-spotted lady beetle (Propylea quatuordecimpunctata) and syrphid fly larva (h/t for the ID on this one, Lost Ladybug Project) feeding on aphids.

High Gloss Lady

My “Year of the Ladybug” continues. Or, should I say, Year of the Aphids? Since it is the aphids, those little buggers, who have ushered in the ladies. This glossy creature is the Polished Lady Beetle, Cycloneda munda, a species new to me.Also known commonly as the Red Lady Beetle and the Immaculate — that is, spotless — Ladybug. There are three species of Cycloneda in North America, with C. munda being the one found here in the North East.
One of the larva stage C. mundas, no orisons here, with a crunchy aphid at the business end. Photographed yesterday, in a drizzly, foggy, damp, humid, clammy Brooklyn Bridge Park, where the polish on the adult beetle shone out like a lighthouse.

Life Cycles in Brooklyn Bridge Park

The rare Two-spotted lady beetles (Adalia bipunctata) I discovered in July are still active in Brooklyn Bridge Park. In fact:“Houston, we have coition.” Luckily, I didn’t learn about reproduction from Republicans, so I know that this kind of activity leads to:Lady beetle eggs. I assume Two-spotted, but don’t know for sure.A recently emerged adult, whose markings and coloring will soon develop.

And continuing on the theme of life cycles:Fall Webworms (Hyphantria cunea) have broken out, formed silken webs, and are skeletonizing their hosts inside the webs.This defoliator is sometimes confused with Gypsy Moths and Eastern Tent caterpillars, who also make communal silk nests in trees. The Fall Webworm can make a tree look fairly ghastly but isn’t very dangerous because it strikes in the fall, when the trees are at the end of their leaf cycle. Brooklyn Bridge Park tends to leave “pests” like this alone because they will attract other species, including predators. Indeed, the aphid infestation on the catalpas probably lured in the Two-spotted lady beetles. H. cunea, meanwhile, has been called a “parasitoid hotel” because it is parasitized by more than fifty species of wasps and flies.

When I poked my camera lens in for the close-ups, the caterpillars outside the nest started wagging in unison, a characteristic of the species. It’s the dance sensation sweeping the nation: the “Funky Caterpillar.”


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