The Life Cycle Study of Holotrichia serrata (Fab) (Coleoptera: Scarabaeidae)

The scarab beetles or May-June beetle or Chaffer beetle causing loss to economic crops, hence is called National pest.An adult feed on wild plant leaves such as Azadirachta indica, Zizupus zizupa, Acacia arabica, etc. and damage leaves infestation to the medicinal and forest plants.After feeding and mating, female laid the eggs which may commence 2 to 4 days of pre-monsoon season.The incubation period ranges from 12 to 18 days.The duration of first instar larvae is 24-28 days; the duration of second instar larvae is 34-38 days and duration of third instar larvae is 124-130 days and pupal period was recorded 170-190 days.Adult period was determined about 35-42 days.In the present study, life cycle of Holotrichia serrata (Fab) was determined to be univoltine.