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Immature Stages of Psychopsidae


Detailed information on immature stages of Psychopsidae is being acquired.  However, Tillyard (1918) noted that in Psychopsis elegans Guer., the larvae are predaceous on various insects that frequent trunks and branches of Eucalyptus and related trees.  The oval eggs are laid in small groups on the bark during midsummer.  Larval feeding occurs at long intervals, and thus the period of development extends over two seasons.  Incubation of the egg takes 12 days, and hibernation occurs as 1st instar larvae.  The 2nd winter is passed in the 3rd larval stage after feeding is completed.  The cocoons resemble Chrysopa, and are found in bark crevices.  The cocoon stage lasts 3 weeks.



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