Priority Mail Dimensional Weight Calculation. 1Round off (e.g., 20.5 rounded off to the next whole number is 21, and 20.4 rounded off is 20), 2Round up (e.g., rounding up either 44.2 or 44.8 to the next whole pound is 45).
The Black Swallowtail (Papilio polyxenes) is a species of butterfly. It is also called the American Swallowtail or Parsnip Swallowtail. It is found throughout much of North America.
The Ozark Swallowtail looks exactly like the Black Swallowtail. It can only be separated by habitat and host plant choices (the host plant is the plant that the caterpillar feeds on). It is found in woodlands. The host plants are Meadow Parsnip (Thaspium barbinode) and Yellow Pimpernal (Taenidia intregerrima).