Systematics Revised by Dugdale (1994). Monophyletic by male genitalia with narrow dorsal flange of the pseudotegumen with a bridge or partially bridged ventral pseudoteguminal processes, and a hood-like development of the dorsolateral pseudoteguminal base. Larval morphology is described by Dugdale (1994). The popular name of ‘porina’ for these species derives from most species originally being placed in the genus Porina (Dugdale, 1994).
Habitat Open ground or forest clearings except for Wiseana jocosa that may also occur in forest and shrublands (Dugdale, 1994).
Biology Young larvae live among leaf litter on the ground surface for 6-8 weeks and may feed on dead or dying plant leaves, but no detailed observations have been made (Grehan, 1989, Dugdale, 1994). Older instars excavate vertical tunnels in soil and feed at night on ground foliage of grasses and herbs. Root-feeding may occur, but no direct observations have been made. Large numbers of adults may emerge with the onset of a frontal weather system or after a warm day with cloudy nights and an air temperature of about 8°C. Several Wiseana species are economically significant because late instar larvae may be present in sufficient densities to compete with stock for spring pasture grown. Pasture damage by Wiseana larvae at 30 late-instar larvae per square meter is equivalent to the grazing of one ewe per hectare for 280 days (Dugdale, 1994). Practical constraints on implimentation of control measures are discussed by Ferguson & Peoples (2013).