No longer extinct,
cuckoo bee, nest parasite,
found further afield.
The Macropis Cuckoo Bee was thought to be extinct until the early 2000s when a specimen was found in Nova Scotia. The bee is one of the rarest bees in North America, with only a handful found during the past decades. A new specimen found in Alberta and reported by Sheffield and Heron (2018) has now pushed the known geographical range of the Macropis Cuckoo Bee further west and gives hope to the continued survival of this species.
The Macropis Cuckoo Bee lays its eggs in the nests of Macropis bees and therefore requires the presence of its hosts in order to reproduce, yet cuckoo bees are not always found where their hosts are. In turn Macropis bees are entirely dependent on plants of the primrose genus meaning that the there is a chain of co-dependence between the plants, bees and cuckoo bees.
Original research: http://dx.doi.org/10.3897/BDJ.6.e22837