Polygonia comma and by the row of pale submarginal spots on the hindwing upperside, which tend to be separate and surrounded by dark shading in comma, but are larger and tend to run together into a pale band in "P. satyrus". 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
Comma semicolon should be used instead. A comma splice should not be confused, though, with asyndeton, a literary device used for a specific effect in which coordinating conjunctions are purposely omitted. Commas are always used to set off certain adverbs at the beginning of a sentence, including "however", "in fact", "therefore", "nevertheless", "moreover", "furthermore", and "still". If these adverbs appear in the middle of a sentence, they are followed and preceded by a comma. As in the second of the two below examples, if the two sentences are separated by a semicolon and the second sentence starts with an adverb, then