Posts Tagged 'insects'

Last Insects?

It’s definitely autumn. Yet there are lingerers in the freakish-now-normal mildness. On Wednesday, for instance, I was quite surprised to see a Monarch Butterfly vibrating by on my lunchtime walk in Green-Wood. At first I thought it was a leaf, as one would this time of year. Further exploration also turned up a skipper in a still-blooming patch of buddleia. There were also a half dozen bumblebees, a few honeybees, and a fly or two. In addition, there were a couple of Green Darner Dragonflies. Oh, and nearby, a bat in the air! There were, however, many fewer birds than there were on Sunday, the last time I was there. I photographed this madcap Japanese maple on Sunday. While doing so, I saw some movement under its branches. Another late butterfly!It came out for the sun. A Red Admiral. An adult like this, presuming it made it past the gauntlet of Phoebes, will hibernate through the winter. The northern reaches of this species’ territory are too cold, however (still?), so they head south. Could this one be going further south or will it try to over winter here?

Catching Up

One post a day, occasionally two, is hardly enough to keep track. Here then is a miscellany of things I’ve seen in recent months which haven’t made it to these pages yet. Smeared Dagger Moth caterpillar in the Bronx.American Bittern in Prospect Park, seen on the same day as that Purple Gallinule that made all the news.Others saw this one capture and devour a songbird. It pays to be still, at least if you’re a bittern.This wasp was cleaning out the inside of the exoskeleton of something.

A finale to milkweed…

This is fascinating: where does the Anthropocene start? 1610? 1964?

These Eyes

From a distance, I thought this was a wasp. Look at that patterning!But then, those eyes…This is a wasp-mimicking fly of the Spilomyia genus, perhaps S. longicornis.Now here’s a bee, one of the Agapostemon sweat bees. Note how the eyes are on the side of the animal. Flies have front-facing eyes that often meet near the middle. In this image you can also see the two pairs of wings that bees and the other Hymenoptera (wasps, reproductive ants) have. Flies, Diptera, have only two wings.

Skipper

Tongue-of-a-skipper — my new all-purpose exclamation — but some of the Hesperiidae family of critters are hard to identify. The ones that perch with wings half-cocked, looking like jet fighters, are the folded-wing type in the Hesperiinae subfamily, the grass skippers.

Wings are more moth-like than butterfly-like; antennae are generally hooked. They just don’t really want to be in either camp. Here, by the way, the tongue is curled up and out of the way.

Details

Same patch, same day.Crab spider lurking…

Another generation of something arthropod…

One Giant Spreadwing

The largest damselfly in the Northeast is a Southwestern species that has been expanding its range our way for the last century. The Giant Spreadwing Archilestes grandis can be up to 2.4″ long, as big as a medium-sized dragonfly. I spotted two males in the Bronx and had a very hard time getting a usable image. (Previous to getting my new camera: there’s always next year… one hopes.) Studied them intently through the binoculars, however: highlights include the bright blue eyes and wide yellow stripe on the thorax.

Someone posted a picture of a pair mating at this location on iNaturalist two days previous to my sighting. Let’s hope the pesticides spread in this wetlands and pond complex at the NY Botanical Garden don’t preclude a return of this impressive species next season.

For those keeping count, I’ve now seen 12 species of damselflies in NYC and all have lived to tell the tale! That includes two spreadwing species in the Bronx; I’ve yet to see any spreadwings in Brooklyn. Amongst the non-spreadwings, the Familiar Bluet and the Fragile Forktail are the most frequently spotted.

Three Wasps Walk Into A Bar…

I. Probably Common Thread-waisted Wasp, Ammophila procera, although the whole Ammophila genus sounds confusing for IDing via camera. So let’s enjoy that orange midriff.Members of the genus parasitize caterpillars and sawfly larvae for their young. A big, bold creature, spotted late last week supping the nectar of seaside goldenrod. Have been seeing these for a few weeks but this was the first time I could get a lens on one.With a sweat bee (Agapostemon) in the mix.II. Gold-marked Thread-waisted Wasp (Eremnophila aureonotata) nectaring on white snakeroot (Ageratina altissima). The gold marking, which is what “aureonotata,” means, seems to be the white gold on the sides of the thorax, seen below. I have a hard time picturing all the plumbing and wiring, as it were, going through that long narrow waist.The females make burrows that they provision with a single caterpillar. Like a lot of wasps, the adults are vegetarians. And note that there’s a dusting of pollen on underside of the body and legs.III. One of the Ichneumonidae family wasps. But which one? iNaturalist suggested a couple of Antipodian species, which was alarming… but a false alarming. Bugguide.net suggested Cryptanura septentrionalis, no common name, and this looks good for a match. That’s an ovipositor not a stinger. Since her antennae were moving so rapidly, it’s hard to see them, but they are very long, with some white in the middle of them. She was rapidly sense-feeling the oak bark’s crevasses, presumably for lunch or something to lay her eggs into. No luck in finding any natural history about this species, except that it’s one of two in the genus found north of Mexico. All of the bugguide.net examples are from southern states. On iNaturalist, my example is the furtherest north reported; next nearest is Washington DC.Though the holotype specimen, named in 1945, was collected in Cleveland in the 1930s, and Cleveland, to be fair, is slightly further north than the Bronx.


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