Scarce swallowtail as far as the Arabian Peninsula, Pakistan, India and western China. A few specimens of the scarce swallowtail have been reported from central Sweden and the United Kingdom but they were probably only strays and not migrants. These swallowtail butterflies inhabit gardens, towns as well as the countryside, in fields and open woodlands. They are found in places with sloe thickets and particularly orchards. In the Alps they can be found up to altitudes of 2000 m., but usually they prefer foothills and lower levels. The presence of "Iphiclides podalirius" in the floodplain of the Morava River in the Slovak
Syntonic comma Syntonic comma In music theory, the syntonic comma, also known as the chromatic diesis, the comma of Didymus, the Ptolemaic comma, or the diatonic comma is a small comma type interval between two musical notes, equal to the frequency ratio 81:80 (= 1.0125) (around 21.51 cents). Two notes that differ by this interval would sound different from each other even to untrained ears, but would be close enough that they would be more likely interpreted as out-of-tune versions of the same note than as different notes. The comma is referred to as a "comma of Didymus" because it is the