Why is a specific species a micro butterfly and not a macro butterfly? It is more of a practice that has been developed over the years without being specifically laid down in any rules of taxonomy. Families consisting mainly of small species fall under the micro butterflies. In most cases, these are species where the fore wing length is less than 10mm. Furthermore, micro butterflies are generally considered to be more primitive and are therefore placed at the beginning of the order of the Lepidoptera. Questionable families are the snout moths (Pyralidae) and the grass moths (Crambidae), whose species are often as large as many geometer moths (Geometridae).
For macro moths, the flight period is an important parameter to determine the species. For micro-moths, this can also be useful for identifying a species, although common species can be found all year round. You will often find micro-moths in moth traps or on a white sheet, but you will find many species during the day in the garden, tree- and shrub-rich areas, and grasslands. During the day they are disturbed to settle down somewhere else after a short flight. Identification can be made easier by examining plants/leaves for the presence of the larvae.
