Posts Tagged 'invertebrates'

Nestled Nests

It’s the time of year to spot the paper nests of Bald-faced Hornets. They usually build their nests in trees. Winter weather often destroys them and/or brings them down to the ground, like this one. But this one looks to be in excellent shape. However, it won’t be reused; the colony is gone, having only lived over the course of summer. Only the queen survives. She over-winters somewhere, perhaps behind the bark of a tree.But wait. Did you notice that hole in the glass behind the bars, visible in the first picture above? Mud-daubbing wasps have gotten in to build their nests of mud. These round holes are where the adult wasps dug their way out of their mud-encased cocoons, probably last August. This one, however, looks like it was never sealed off. Nor filled with spiders.

Mushroom Monday

To everything there is a season, and these mushrooms were on the way to deliquescing into ooze. Ants in the first picture. In the second, the white rice-looking things are alive. They are some kind of springtails, possibly of the genus Ceratophysella, and are scavenging on the rich fruit of these fruiting bodies. As always, you can click on these images to pop them open, although you may wish to pass on this one.I read recently a comment from a lower Hudson River valley mushroom hunter, who said this fall has seen the most mushroom in half a century. It was extraordinarily wet, that’s for sure.Large Yellow Webworm caterpillar.

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…

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.

Autumnal Flowers And Their Familiars

There’s only so much in bloom now.But there are still hungry insects.And insects that eat insects.The goldenrod smorgasbord.


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