Swallowtail butterfly black swallowtail is the state butterfly of Oklahoma. Swallowtail butterfly Swallowtail butterflies are large, colorful butterflies in the family Papilionidae, and include over 550 species. Though the majority are tropical, members of the family inhabit every continent except Antarctica. The family includes the largest butterflies in the world, the birdwing butterflies of the genus "Ornithoptera". Swallowtails have a number of distinctive features; for example, the papilionid caterpillar bears a repugnatorial organ called the osmeterium on its prothorax. The osmeterium normally remains hidden, but when threatened, the larva turns it outward through a transverse dorsal groove by inflating it with fluid.
Comma certain homonyms. The comma therefore functions as a silent letter in a handful of Greek words, principally distinguishing ("ó,ti", "whatever") from ("óti", "that"). The enumeration or ideographic comma——is used in Chinese, Japanese punctuation, and somewhat in Korean punctuation. In the People's Republic of China and in North/South Korea, this comma ( , , "dùnhào") is usually used only to separate items in lists, while in Japan it is the more common form of comma (, "tōten", "clause mark"). In documents that mix Japanese and Latin scripts, the full-width comma () is used; this is the standard form of comma (