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 splice Jr. advises using a semicolon, not a comma, to join two grammatically complete clauses, except when the clauses are "very short" and "similar in form", for example: Comma splices are similar to run-on sentences, which join two independent clauses without any punctuation and without a conjunction such as "and", "but" "for", etc. Sometimes the two types of sentences are treated differently based on the presence or absence of a comma, but most writers consider the comma splice as a special type of run-on sentence. According to "Garner's Modern English Usage": Comma splices often arise when writers use conjunctive adverbs (such