Multi-Gas Detector Confined Space Kit, Detects Combustible, Oxygen, Carbon Monoxide, Hydrogen Sulfide, Nitrogen Dioxide, Sensor Range LEL 0 to 100 Percent, O2 0 to 30 Percent vol., CO 0 to 1500ppm, H2S 0 to 500pmm, NO2 0 to 150 ppm, Housing Color Black, Operating Temp.
Freebase (0.00 / 0 votes) Rate this definition: Monarch butterfly. The Monarch butterfly is a milkweed butterfly in the family Nymphalidae. It is perhaps the best known of all North American butterflies. Since the 19th century, it has been found in New Zealand, and in Australia since 1871, where it is called the wanderer.
There are three species of monarch butterflies: 1  D. plexippus, described by Linnaeus in 1758, is the species known most commonly as the monarch butterfly of North America. 2  D. erippus, the southern monarch, was described by Pieter Cramer in 1775.