Leap Days are relatively rare events, and a paper which appears on a Leap Day is even rarer. However, this year’s Leap Day saw the birth of a new subfamily: Prestonellinae.
The name was originally coined by van Bruggen nearly 40 years ago for a family, but introduced in a way it was not available according to the ICZN rules. Moreover, during these years additional research has shed more light on the systematic position of this group. And thus any day is a good day to make it available under the Code. It happened just to be 29 February 2016.