Moths of the Limberlost: A Book About Limberlost Cabin

by Gene Stratton-Porter

There was not a Thysbe in front of the lens, so picking up a long cudgel I always carry afield, and going quietly to surrounding thistles, I jarred them lightly with it, and began rounding up the Hemaris family in the direction of the camera. The trick was a complete success. Soon I had an exposure on two. After they had faced the camera once, and experienced no injury, like the birds, they accepted it as part of the landscape. The work was so fascinating, and the pictures on the ground glass so worth while, that before I realized what I was doing, half a dozen large plates were gone, and for this reason, work with the cardinals that day ended at noon. This is why I feel that at times in bird work the moths literally 'thrust themselves' upon me.

CHAPTER XIII The Modest Moth: Triptogon Modesta

Of course this moth was named Modesta because of modest colouring.
It reminds me of a dove, being one of my prime favourites. On wing
it is suggestive of Polyphemus, but its colours are lighter and softer.
Great beauty that Polyphemus is, Modesta equals it.

Modesta belongs to the genus Triptogon, species Modesta—hence the common name, the Modest moth. I am told that in the east this moth is of stronger colouring than in the central and western states. I do not know about the centre and west, but I do know that only as far east as Indiana, Modesta is of more delicate colouring than it is described by scientists of New York and Pennsylvania; and, of course, as in almost every case, the female is not so strongly coloured as the male.

I can class the Modest moth and its caterpillar among those I know, but my acquaintance with it is more limited than with almost any other. My first introduction came when I found a caterpillar of striking appearance on water sprouts growing around a poplar stump in a stretch of trees beside the Wabash. I carried it home with a supply of the leaves for diet, but as a matter of luck, it had finished eating, and was ready to pupate. I write of this as good luck, because the poplar tree is almost extinct in my location. I know of only one in the fields, those beside the river, and a few used for ornamental shade trees. They are so scarce I would have had trouble to provide the caterpillar with natural food; so I was glad that it was ready to pupate when found.

Any one can identify this caterpillar easily, as it is most peculiar. There is a purplish pink cast on the head and mouth of the full-grown caterpillar, and purplish red around the props. The body is a very light blue-green, faintly tinged with white, and yellow in places. On the sides are white obliques, or white, shaded with pink, and at the base of these, a small oval marking. There is a small short horn on the head. But the distinguishing mark is a mass of little white granules, scattered all over the caterpillar. It is so peppered with these, that failure to identify it is impossible.

These caterpillars pupate in the ground. I knew that, but this was before I had learned that the caterpillar worked out a hole in the ground, and the pupa case only touched the earth upon which it lay. So when my Modesta caterpillar ceased crawling, lay quietly, turned dark, shrank one half in length, and finally burst the dead skin, and emerged in a shining dark brown pupa case two inches long, I got in my work. I did well. A spade full of garden soil was thoroughly sifted, baked in the oven to kill parasites and insects, cooled, and put in a box, and the pupa case buried in it. Every time it rained, I opened the box, and moistened the earth. Two months after time for emergence, I dug out the pupa case to find it white with mould. I had no idea what the trouble was, for I had done much work over that case, and the whole winter tended it solicitously. It was one of my earliest attempts, and I never have found another caterpillar, or any eggs, though I often search the poplars for them.

However, something better happened. I say better, because I think if they will make honest confession, all people who have gathered eggs and raised caterpillars from them in confinement, by feeding cut leaves, will admit that the pupa cases they get, and the moths they produce are only about half size. The big fine cases and cocoons are the ones you find made by caterpillars in freedom, or by those that have passed at least the fourth or fifth moult out of doors. So it was a better thing for my illustration, and for my painting, when in June of this year, Raymond, in crossing town from a ball game, found a large, perfect Modesta female. He secured her in his hat, and hurried to me. Raymond's hat has had many wonderful things in it besides his head, and his pockets are always lumpy with boxes.

Although perfect, she had mated, deposited her eggs, and was declining. All she wanted was to be left alone, and she would sit with wings widespread wherever placed. I was in the orchard, treating myself to some rare big musky red raspberries that are my especial property, when Raymond came with her. He set her on a shoot before me, and guarded her while I arranged a camera. She was the most complacent subject I ever handled outdoors, and did not make even an attempt to fly. Raymond was supposed to be watching while I worked, but our confidence in her was so great, that I paid all my attention to polishing my lenses, and getting good light, while Raymond gathered berries with one hand, and promiscuously waved the net over the bushes with the other.

During the first exposure, Modesta was allowed to place and poise herself as seemed natural. For a second, I used the brush on her gently, and coaxed her wings into spreading a little wider than was natural. These positions gave every evidence of being pleasing and yet I was not satisfied. There was something else in the back of my head that kept obtruding itself as I walked to the Cabin, with the beautiful moth clinging to my fingers. I did not feel quite happy about her, so she was placed in a large box, lined with corrugated paper, to wait a while until the mist in my brain cleared, and my nebulous disturbance evolved an idea. It came slowly. I had a caterpillar long ago, and had investigated the history of this moth. I asked Raymond where he found her and he said, "Coming from the game." Now I questioned him about the kind of a tree, and he promptly answered, "On one of those poplars behind the schoolhouse."