Swallowtail butterfly passed in a pupal diapause stage. As swallowtail butterflies are large, colorful, and attractive, they were once targeted by butterfly collectors. The largest of these, the birdwing butterflies are particularly sought after and are cultured in butterfly farms for the purpose of collectors. Many members of the family feed as larvae on plants of the citrus family, Rutaceae. Some of these attractive butterflies are therefore considered pests in citrus orchards. The Oregon swallowtail is the state insect of Oregon. The eastern tiger swallowtail is the state insect of Virginia and the state butterfly of Georgia, Delaware, and South Carolina. The
Comma bacon, eggs, toast and marmalade, and tea"). "The Chicago Manual of Style", and other academic writing guides, require the serial comma: all lists must have a comma before the "and" prefacing the last item in a series. If the individual items of a list are long, complex, affixed with description, or themselves contain commas, semicolons may be preferred as separators, and the list may be introduced with a colon. In news headlines, a comma might replace the word "and", even if there are only two items, in order to save space, as in this headline from Reuters: Commas are often