Fortunately, I have a preliminary sketch-doodle that I can post.
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A dobsonfly, in case you don't know, is what a hellgrammite grows up into. The thing that's missing from the preliminary sketch is a sense of scale: for insects, dobsonflies are large, and those pincers the males have are pretty impressive.
And as I was scanning that doodle, I thought, "Where have I seen that before?"
It turns out that my notebook for Spring 1996, early in my grad-school days, is full of drawings of dobsonflies and hellgrammites.
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I was working on a poem then, eventually drafted too much under the influence of Hart Crane I think, about water insects.
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The diagram of the three arrows represented the three worlds I wanted to describe: the water-strider's transit across the surface of the pond, the metamorphosis of insects like the hellgrammite and the dragonfly, and the hand of the human collector passing down into the underwater world. Or at least that's how I read it now, fifteen years later.
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Like most of my old creative efforts, it's a little embarrassing to look at: yet another old failure. But maybe there's something I could learn from those fifteen-year-old notebooks (scribbled by a twenty-four-year-old) if I had a little more tranquillity in which to recollect them. Today, however, I'm back to the grading piles. Poetry (and drawing) is for another day.