Winter-active-nymphs
Guides
Podmosta macdunnoughi
maritime forestfly
Podmosta macdunnoughi is a small nemourid stonefly distributed across glaciated regions of eastern Canada and northern New England. The species exhibits a univoltine life cycle with adults emerging in late April and early May. A distinctive embryonic diapause delays egg hatching until September, with nymphs active through winter and growth resynchronizing before emergence.