Posts Tagged 'insects'

Wooly Bear

Pyrrharctia isabellaOur old friend the Banded Wooly Bear caterpillar, bearishly larval stage of the Isabella Tiger Moth, Pyrrharctia isabella. This was found behind a large piece of bark, which was put back. img_2643Have you heard the one about judging winter’s length/severity by the amount of black and/or orange on the animal? Turns out that the colors are just a factor of age: the orange expands and the black contracts during each successive molt.Pyrrharctia isabellaThe caterpillar is overwintering in a state of dormancy. They can actually freeze solid and thaw out without ill-effects. An Arctic Wolly Bear (I’m not sure it’s the same species) has such a short period of summer that it can stay in the caterpillar stage for a dozen years, growing a bit each summer before finally cocooning and reforming as an adult, when it lives for about a day.

I would not recommend living in a state of dormancy right now. Things to do instead.

Cocoon

cocoonThe winter woods are quiet and relatively monotone in color. But look closer. (And listen!)

We were looking at tree buds. This big cocoon with remnants of leaf-covering was just hanging there. One of the giant moths of the family Saturniidae made this, I think. Will it make it? Has it already be taken over by parasitic wasps? Overhead, a trio of Red-tailed Hawks explored their own futures.

Ah, the future. There is a subset of Americans who seem pretty immune to reality. Perhaps it is a grounding in the fiction of religion, because if they believe that, they may well believe anything. Or perhaps it is the authoritarian personality that wants to be led.  Or maybe it’s the willful ignorance of the self-satisfied. All these could be in play. Don’t forget the power of conspiracy thinking, a strange urge to make everything seem rational, orderly, and controlled by somebody. And the windowless rooms of Fox and Facebook…

It’s really up to them in too many ways. They have to be convinced that lies, more lies, and damned lies are antithetical to democracy and civilization, not to mention their own damn-fool asses.

Oak Wilt

Damn it! I really wanted to start on a positive note, but the bad news just keeps coming. Oak wilt has been discovered in Brooklyn. This is a lethal fungal infection of oaks and other species, its spores spread by beetles.

img_2116When I was in Green-Wood on Friday, I heard a chipper hard at work. As I got closer, I realized it was grinding up one of my favorite old Red Oaks! That’s about 7 feet of stump still to go. This is the tree whose globular fungal growths, which have nothing to do with the wilt as far as I’ve been able to tell, have piqued my curiosity before. The sixth image down here is what these mushrooms look like when fresh.

Here’s more about the disease.

Oaks are so damn important. Their relationship to a host of life forms, particularly insects and birds, puts them deep within a spreading web of ecological connections (Muir Webs). And we have a lot of oaks here in the city, on the street and in the parks and woodlands.

I mean, it’s a double-whammy: a killer orange fungus soon to be soiling the White House, and a nasty fungal pathogen going after some of our grandest trees.

Spiny Gall

gall2Witch-hazel (Hamamelis virginiana) is a good gall-tree. One species of aphid, Hormaphis hamamelidis, forces the tree to make cone-shaped galls on the leaves. The young aphid grows up inside this, protected from its enemies. Another species of aphid, the Spiny Witch Hazel Gall maker, Hamamelistes spinosus, makes the tree make these hard, spiny galls that come off of the twigs.gall1Ken Chaya, who identified these for us, cut a couple of them in half. A spider had taken up residence in one. Another had the white filaments of a cocoon within.
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Have to admit missing most of the White-tailed-Deer-in-Harlem story, for I have no interest in television news ratings-fodder. In response, Jason Munshi-South had a good editorial in the Daily News on the need for a sane policy on urban wild animals.

Twilight of the Gods

mosquito

Variegated

Euptoieta claudiaA Variegated Fritillary (Euptoieta claudia) yesterday in the Buddleia pollinator-magnet at Green-Wood. First time I’ve seen this species here in NYC, although I’d seen one before in Arizona. They’re a southern species, uncommon here, but have been known to get up to Canada.

Tiger Beetle

Cicindela limbalisA Common Claybank Tiger Beetle (Cicindela limbalis). Also known as the Green-margined Tiger Beetle. Spotted by a owl-eyed friend on a lichen-anchored rock on Mt. Taurus up above Cold Spring, NY, on a recent hike. Tiger beetles, in addition to being stripy are fast-moving predators of other insects.

viewThis was the view from up there.


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