Polygonia comma Polygonia comma Polygonia comma, the eastern comma, is a North American butterfly in the family Nymphalidae, subfamily Nymphalinae. This butterfly is seasonally variable. The upperside of the summer form's hindwings are all black, whereas the winter forms hindwings are reddish orange. The underside of both forms is striped with dark and light brown. There is a silvery comma mark in the middle of the hindwing in both forms. Its wingspan is . The eastern comma may be spotted in woods near rivers, ponds, marshes, swamps, and other water sources. This butterfly seldom visits flowers, but rather feeds on sap, rotting
Comma "coordinate adjectives" (i.e., adjectives that directly and equally modify the following noun). Adjectives are considered coordinate if the meaning would be the same if their order were reversed or if "and" were placed between them. For example: Some writers precede quoted material that is the grammatical object of an active verb of speaking or writing with a comma, as in "Mr. Kershner says, "You should know how to use a comma."" Quotations that follow and support an assertion are often preceded by a colon rather than a comma. Other writers do not put a comma before quotations unless one would