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The first foggy days of Autumn coincide with the mass emergence of males. They fly in the mist and drizzle. There must be millions of larvae in the soils of Christchurch where these mass flights occur yet the larvae are virtually unknown. It is possible that they are deep among the roots of trees and shrubs. See also L. tapleyi and L. sinclairi. The females are brachypterous and emerge late in the afternoon, mate, lay their eggs, and die a few hours later.
Text updated: 23/07/2016