Swallowtail butterfly 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. The forked appearance of the swallowtails' hindwings, which
S-comma this reason, almost all Romanian texts still use S-cedilla (or even S), despite the recommendation to migrate from cedilla to comma. The letter is placed in Unicode in the Latin Extended-B range, under "Additions for Romanian", as the "Latin capital letter S with comma below" (U+0218) and "Latin small letter s with comma below" (U+0219). In HTML these can be encoded by codice_1 and codice_2, respectively. S-comma S-comma () is a letter which is part of the Romanian alphabet, used to represent the sound , the voiceless postalveolar fricative (like "sh" in "shoe"). The letter was proposed in the "Buda