Portraits of Wildflowers

Perspectives on Nature Photography

Posts Tagged ‘wasp

I got there before the mowers did

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I’d been noticing a few lingering basket-flowers (Plectocephalus americanus) in the little meadow at the Floral Park Dr. entrance to Great Hills Park, so on July 13th I stopped there to take some pictures. It was good timing because within days the city mowed that area. Unlike what happens many times, at least most of the wildflowers there had gone to seed, so the mowing did minimal damage. The bud shown here, however, wouldn’t have had time to become a flower head like the one it had nestled against, much less develop seeds.

On the other side of Floral Park Dr. the city mows only a narrower strip. The picture below, taken on that other side, shows a wasp that was probably either Polistes carolina or Polistes rubiginosus on a Clematis drummondii flower. As I recall, the spot was a little beyond the zone that gets mowed, so those flowers would have had a chance to produce seeds. In fact when I took a glance at that area a few days ago, I saw plenty of Clematis drummondii vines doing their thing.

 

 

 

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“There is a great difference between presuming an opinion to be true, because, with every opportunity for contesting it, it has not been refuted, and assuming its truth for the purpose of not permitting its refutation.”

That sentence from John Stuart Mill’s 1859 essay “On Liberty” is at least as pertinent today, when activists try to cancel (and too often succeed in canceling) people with whom they disagree. Unfortunately this has become the most censorious period I’ve experienced as an American.

 

 

© 2023 Steven Schwartzman

 

 

 

Written by Steve Schwartzman

August 2, 2023 at 4:25 AM

Double falsity

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I’ve never cottoned to plant names with “false” in them. Don’t tell me what something isn’t; tell me about what it is in its own right. One native plant that this applies to is the so-called false gaura, Stenosiphon linifolius, shown here. Yes, it’s in the same botanical family as gaura, but I doubt anyone who looks at this tall, wiry plant for a while would mistake it for any sort of gaura.

As things have turned out, botanists now think the genus Gaura itself is false. They’ve transferred all the Gaura species to the genus Oenothera, the same one that includes the pink evening primrose, the square-bud primrose, river primrose, and various other members of the evening primrose family. False gaura, now doubly false, also got swept up in the reclassification: Stenosiphon linifolius has become Oenothera glaucifolia.

Today’s pictures are from July 8th along Oasis Bluff Dr., the one place in the Austin area I can count on to find the species. I couldn’t, however, anticipate the paper wasp in the genus Polistes.

 

 

 

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Here’s the executive summary of a July 12th report by Mark P. Mills titled “Electric Vehicles for Everyone? The Impossible Dream”:

 

“A dozen U.S. states, from California to New York, have joined dozens of countries, from Ireland to Spain, with plans to ban the sale of new cars with an internal combustion engine (ICE), many prohibitions taking effect within a decade. Meanwhile, the U.S. Environmental Protection Agency (EPA), in a feat of regulatory legerdemain, has proposed tailpipe emissions rules that would effectively force automakers to shift to producing mainly electric vehicles (EVs) by 2032.

“This is all to ensure that so-called zero-emission EVs play a central role in radically cutting carbon dioxide (CO2) emissions. To ensure compliance with ICE prohibitions and soften the economic impacts, policymakers are deploying lavish subsidies for manufacturers and consumers. Enthusiasts claim that EVs already have achieved economic and operational parity, if not superiority, with automobiles and trucks fueled by petroleum, so the bans and subsidies merely accelerate what they believe is an inevitable transition.

“It is certainly true that EVs are practical and appealing for many drivers. Even without subsidies or mandates, millions more will be purchased by consumers, if mainly by wealthy ones. But the facts reveal a fatal flaw in the core motives for the prohibitions and mandates. As this report illustrates:

  • No one knows how much, if at all, CO2 emissions will decline as EV use rises. Every claim for EVs reducing emissions is a rough estimate or an outright guess based on averages, approximations, or aspirations. The variables and uncertainties in emissions from energy-intensive mining and processing of minerals used to make EV batteries are a big wild card in the emissions calculus. Those emissions substantially offset reductions from avoiding gasoline and, as the demand for battery minerals explodes, the net reductions will shrink, may vanish, and could even lead to a net increase in emissions. Similar emissions uncertainties are associated with producing the power for EV charging stations.
  • No one knows when or whether EVs will reach economic parity with the cars that most people drive. An EV’s higher price is dominated by the costs of the critical materials that are needed to build it and is thus dependent on guesses about the future of mining and minerals industries, which are mainly in foreign countries. The facts also show that, for the majority of drivers, there’s no visibility for when, if ever, EVs will reach parity in cost and fueling convenience, regardless of subsidies.

“Ultimately, if implemented, bans on conventionally powered vehicles will lead to draconian impediments to affordable and convenient driving and a massive misallocation of capital in the world’s $4 trillion automotive industry.”

 

You’re welcome to read the full report. Also from July 12, you can read a Wall Street Journal editorial by James Freeman highlighting some of the report’s findings; it’s called “They’re Coming for Your Cars,” and the sub-head is “Even if politicians can push us all into e-vehicles, they will have to be small and scarce to achieve emissions goals.”

 

 

© 2023 Steven Schwartzman

 

 

 

Written by Steve Schwartzman

July 16, 2023 at 4:22 AM

Insects on goldenrod

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From the morning of November 9th on the shore of the Riata Trace Pond, here are two views of flowering goldenrod plants, probably Solidago altissima. In the top photograph you may strain your eyes to make out the Ailanthus webworm moth (which I didn’t even notice when I took the picture), but you sure can’t miss the umbrella paper wasp (Polistes carolina) shown below.

 

 


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UPDATE. Last month I reported on the way the public schools in Wellesley, Massachusetts, were purposely segregating students by race. Now I’ve learned about intentional racial segregation in a New York City junior high school. Needless to say—except that I find myself having to say it—racial segregation has been illegal in American schools ever since the Brown vs. Board of Education decision by the U.S. Supreme Court in 1954.

 

© 2021 Steven Schwartzman

Written by Steve Schwartzman

November 28, 2021 at 4:24 AM

One more take on woolly croton

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On a woolly croton plant (Croton capitatus) in Bastrop State Park on September 23rd I noticed that a green lynx spider (Peucetia viridans) had caught what appears to be a potter wasp, seemingly in the genus Parancistrocerus, from the subfamily Eumeninae.

One of the great existential questions of our time, at least in the Anglosphere (i.e. the English-speaking parts of the world), is how to spell the adjectival form of wool: is it woolly or is it wooly? Dictionaries accept both, though the form with a double-l seems to be favored, for the same reason we write really rather than realy and totally rather than totaly. For people who come to woolly as non-native speakers, its non-literal meanings must seem strange. Merriam-Webster gives these:

2a: lacking in clearness or sharpness of outline
woolly TV picture

b: marked by mental confusion
woolly thinking

3: marked by boisterous roughness or lack of order or restraint
where the West is still woolly— Paul Schubert—used especially in the phrase wild and woolly

Though my pictures have usually come from the wild and my posts have sometimes been wild and woolly, I trust you haven’t found any instances of really totally woolly thinking in them.

© 2021 Steven Schwartzman

Written by Steve Schwartzman

October 16, 2021 at 4:37 AM

Paper wasps at nest hanging from a dry cattail leaf

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On September 14th at the Riata Trace Pond I found some paper wasps (Polistes sp.) building their nest on a dry cattail leaf. They kept on with their work and I with mine, which included photographing them.

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I recently came across Shane Trotter’s good article “Remedial Education for All,” which I recommend to you. Here are a couple of passages from the article:

The unfortunate reality is that ability and upbringing really do matter. Even the best teachers usually won’t make a dent against a home environment that does not value education. This is not to suggest that schools should ignore the needs of students who are less talented, have harder home lives, or come from less academic pedigrees. Indeed, it is necessary and wonderful that teachers are passionate about trying to reach such students. But we can’t expect teachers to reliably compensate for large voids. Even more, we can’t stunt the development of all students in the name of this naive pursuit.

As calls for equality of outcome gain steam and schools make plans to reduce educational gaps that have been exacerbated by 18 months of virtual learning, we’d do well to remember the predictable costs of pretending we can make everything fair. Mass education will never be a perfect fit for everyone. Schools have to identify the competencies and attitudes that are most valuable and optimize in a way that brings the most possible students to high, yet reachable standards. When high school students fall too far behind and decide they aren’t interested in catching up, they should be able to pursue a vocational track that pushes them to develop other meaningful skills. These students will be far more likely to apply themselves if we give them relevant options like work apprenticeships, trade programs, and so on.

At its core, this is about maintaining the integrity of the learning environment. Too many in education today have no sense of the value that certain skills and habits of mind can have in people’s lives (or that these are the skills of which a high school diploma is supposed to indicate mastery). Education, to them, is just a prop to be given out in hopes of advancing a person’s social positioning. They are willing to compromise standards at every turn in order to manufacture achievements that society has predetermined as “good.” But in the process, they devalue those outcomes and the surrounding educational culture.

I’ve been pointing out many of the same problems with education for years, even decades, as you’ve also heard in the last two posts.

© 2021 Steven Schwartzman

Written by Steve Schwartzman

September 16, 2021 at 4:36 AM

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Not just Lucifer Falls

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At Robert H. Treman State Park in New York’s Finger Lakes region on August 1st I didn’t only photograph Lucifer Falls and other waterfalls. Here are some non-watery scenes from the western (upper) end of the park.

I can’t not see a bell.

A hornet nest.

Living, dead, and inanimate together.

Oh, the lichens….

This reminded me of those old ruined homesteads out in the country where the only thing that’s left standing is a chimney.

© 2019 Steven Schwartzman

Written by Steve Schwartzman

August 28, 2019 at 4:39 AM

Wasp-on-the-mountain

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A few weeks ago you got a close look at the inflorescence of snow-on-the-prairie. Now you’re getting a look at its sister species, snow-on-the-mountain (Euphorbia marginata). On September 2nd I’d been driving home after photographing at two other locations in northwest Austin when I spotted a few of these familiar plants and decided to stop. Once I got close, I saw that a wasp was busy working the flowers. Like some other insects I’ve seen on flowers, this one kept moving pretty quickly, so I used a high shutter speed, 1/800 of a second, to keep from ending up with a blurred image of the wasp.

© 2018 Steven Schwartzman

Written by Steve Schwartzman

September 14, 2018 at 4:44 AM

Wasp on prairie parsley

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I photographed this wasp on prairie parsley (Polytaenia texana) at the Lady Bird Johnson Wildflower Center on May 6th.

© 2018 Steven Schwartzman

Written by Steve Schwartzman

June 24, 2018 at 4:41 AM

A wasp dragging a spider

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Along the Muir Lake Trail in Cedar Park on July 3rd I noticed a colorful and energetic wasp dragging a spider that it had immobilized. When I stepped closer to try to take a photograph the wasp went away, but I took a stance at a medium distance from the spider and waited for the wasp to return. It came and went several times, continuing with its task each time, and I managed to get some sharply focused pictures in spite of the frequent movement.

UPDATE: Thanks to John S. Ascher at BugGuide.net, I can now say this predator appears to be Tachypompilus ferrugineus, known as the rusty spider wasp, red-tailed spider hunter, or red-tailed spider wasp.

© 2017 Steven Schwartzman

Written by Steve Schwartzman

July 23, 2017 at 4:45 AM

Paper wasps

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When I was out on August 30th at a property along US 183 in Cedar Park photographing sumpweed and snow-on-the-mountain, I also found some paper wasps busy working on their nest. Notice the egg in one cell.

© 2016 Steven Schwartzman

Written by Steve Schwartzman

October 4, 2016 at 5:00 AM