Starr County Butterflies
Egg, 9-26-10
Pre-emergent; head visible, 9-29-10
Fresh caterpillar, 9-30-10
Second instar, black face, 10-3-10
10-9-10
Pre-molt, 10-11-10
New instar, head now green, 10-12-10
10-18-10
Mature caterpillar, 10-24-10
Fresh chrysalis, 10-26-10
Chrysalis, 10-30-10
Fresh Sickle-winged Skipper, 11-5-10
A yellow dot on a 6" seedling of Lime Prickly-Ash, Zanthoxylum fagara, proved to be a butterfly egg, and I was soon raising a Sickle-winged Skipper caterpillar. As the pictures to the right show, the caterpillar's head was clearly visible in the egg a day before it emerged. The yellowish face soon became black, and then olive as the caterpillar matured.
Like many skippers, the caterpillar sewed several leaves together to make a shelter. It would stay in a given shelter until I decided the leaves needed to be discarded because they were too deteriorated and in danger of becoming moldy. It would then form a new shelter on the fresh branches I provided.
The caterpillar took 25 days to pupate; the adult emerged 11 days later.