The flying pseudo-athropods of Silvanus have still some features of their aquatic ancestors, for example the reproduction. They all must lay their eggs into water or at least a wet habitat. In Addition this habitat must be warmer than 5 degrees which could be a problem at the poles where the temperature often falls under 3 degrees. Saccicauda and it's kin found a solution. After laying the egg, the female put it into a pouch at the base of the males tail. In this warm and wet enviroment the babys can grow easily. After hatching the males beginns to produce a light blue secretion on which the young feed during the first two weeks. After that short, but intense time of parental care the male fly as high as possible and throw ou the juvenile. When it's healthy and fit it will beginn to flap with it's wings instinctively, if not the natural selection get a new victim.
With sometimes 80 cm wingspan Albidaperus is the biggest known flying pseudo-athropd and a nightmare for all small surface swimmers. These "piscivoures" animals often remain several days in the air over Xibalba until they return to their small colonies at the shores of the rifts which split the living planetal crust of Silvanus. In difference to it southern and northern cousins Albidapterus have no breeding season and produce offspring all year round. The females lay their eggs in small ponds which often arise in dead trunks of Mundodendralis major.