The Carolina moths come from their pupa cases as featherweights step into the sparring. They feed partially by day, and their big eyes surely see more than those of most other moths, that seem small and deepset in comparison. Their legs are long, and not so hairy as is the rule. They have none of the blind, aimless, helpless appearance of moths that do not feed. They exercise violently in the pupa cases before they burst the shields, and when they emerge their eyes glow and dilate. They step with firmness and assurance, as if they knew where they wanted to go, and how to arrive. They are of direct swift flight, and much experience and dexterity are required to take them on wing.
Both my Carolina moths emerged in late afternoon, about four o'clock, near the time their kind take flight to hunt for food. The light was poor in the Cabin, so I set up my camera and focused on a sweetbrier climbing over the back door.
The newly emerged moth was travelling briskly in that first exercise it takes, while I arranged my camera; so by the time I was ready, it had reached the place to rest quietly until its wings developed. Carolina climbed on my finger with all assurance, walked briskly from it to the roses, and clung there firmly.
The wet wings dropped into position, and the sun dried them rapidly. I fell in love with my subject. He stepped around so jauntily in comparison with most moths. The picture he made while clinging to the roses during the first exposure was lovely.
His slender, trim legs seemed to have three long joints, and two short in the feet. In his sidewise position toward the lens, the abdomen showed silver-white beneath, silvery grey on the sides, and large patches of orange surrounded by black, with touches of white on top. His wings were folded together on his back as they drooped, showing only the under sides, and on these the markings were more clearly defined than on top. In the sunlight the fore pair were a warm tan grey, exquisitely lined and shaded. They were a little more than half covered by the back pair, that folded over them. These were a darker grey, with tan and almost black shadings, and crossed by sharply zig-zagging lines of black. The grey legs were banded by lines of white. The first pair clung to the stamens of the rose, the second to the petals, and the third stretched out and rested on a leaf.
There were beautiful markings of very dark colour and white on the thorax, head, shoulders, and back wings next the body. The big eyes, quite the largest of any moth I remember, reminded me of owl eyes in the light. The antennae, dark, grey-brown on top, and white on the under side, turned back and drooped beside the costa, no doubt in the position they occupied in the pupa case.
The location was so warm, and the moth dried so rapidly, that by the time two good studies were made of him in this position, he felt able to step to some leaves, and with no warning whatever, reversed his wings to the 'fly' position, so that only the top side of the front pair showed. The colour was very rich and beautiful, but so broken in small patches and lines, as to be difficult to describe. With the reversal of the wings the antennae flared a little higher, and the exercise of the sucking tube began. The moth would expose the whole length of the tube in a coil, which it would make larger and contract by turns, at times drawing it from sight. When it was uncoiled the farthest, a cleft in the face where it fitted could be seen.
The next day my second Carolina case produced a beautiful female. The history of her emergence was exactly similar to that of the male. Her head, shoulders, and abdomen seemed nearly twice the size of his, while her wings but a trifle, if any larger.
As these moths are feeders, and live for weeks, I presume when the female has deposited her eggs, the abdomen contracts, and loses its weight so that she does not require the large wings of the females that only deposit their eggs and die. They are very heavy, and if forced to flight must have big wings to support them. I was so interested in this that I slightly chloroformed the female, and made a study of the pair. The male was fully alive and alert, but they had not mated, and he would not take wing. He clung in his natural position, so that he resembled a big fly, on the smooth side of the sheet of corrugated paper on which I placed the female. His wings folded over each other. The abdomen and the antennae were invisible, because they were laid flat on the costa of each wing.
The female clung to the board, in any position in which she was placed. Her tongue readily uncoiled, showing its extreme length, and curled around a pin. With a camel'shair brush I gently spread her wings to show how near they were the size of the male's, and how much larger her body was.