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 female Swallowtail is nearly always much fatter than the maleâ¦.but the real distinguishing feature is the lack of claspers and the distinctive opening one segment back from the anal point of the abdomen. In many species there is some distinguishing coloration and/or wing marking to help you confirm your decision.