DERMESTID BEETLES Dr Mahesha H B Associate Professor
DERMESTID BEETLES Dr. Mahesha H B Associate Professor Department of Sericulture Yuvaraja’s College, University of Mysore, India 17 October 2021 www. hbmahesh. weebly. com 1
The name Coleoptera, derived from the Greek words "koleos" meaning sheath and "ptera" meaning wings, refers to the modified front wings which serve as protective covers for the membranous hind wings. 17 October 2021 www. hbmahesh. weebly. com 2
�ORDER – COLEOPTERA �FAMILY – DERMESTIDAE Dermestes ater, D. cadverinus, D. vulpinus, Anthrenus verbasci and A. pipinellae Reported in India and Japan & other countries Occurs throughout the year, mostly cosmopolitan. Nature of Damage Attack pupae and Adults in Grainages, Causes Extensive Damage to Stored Cocoons 17 October 2021 www. hbmahesh. weebly. com 3
Damaged Cocoons Such damaged cocoons become unfit to reeling 17 October 2021 www. hbmahesh. weebly. com 4
Egg Adult Life Cycle of Dermestes ater Maggot Pupa 17 October 2021 www. hbmahesh. weebly. com 5
Dermestes ater Initially light yellow > Black, 7 mm, oviposition after 5 days Pupation 7 -8 days 17 October 2021 www. hbmahesh. weebly. com Milky White, elongated, Size 1. 9 x 0. 48 Incubation 3 -6 days Spindle, covered with hairs, 2. 4 mm length, white turns brown. II instar > black. moults 4 -6 in 27 -28 days 6
Grub Pupa Adult Different Stages of Dermestes cadverinus 17 October 2021 www. hbmahesh. weebly. com 7
Dermestes cadverinus Oval, elongated & dark Brown, 1 cm 2 mm, Milky White, elongate-oval Incubation 7 days Spindle, covered with hairs, reddish brown, moults 5 -7 in 1 -2 months, attains 1. 5 cm 17 October 2021 www. hbmahesh. weebly. com 8
Prevention and Control �Storage of unwanted cocoons for long period – avoided �Periodic Cleaning of rearing house & cocoon storage. �Periodic cleaning of Grainages. �Dipping of wooden articles in 0. 2 % Melathion for 2 -3 min, Sundry & Use. �Passing of Hot Air (50 -60°C) to Maintain low humidity – 30% helps to kill beetles. �Fumigation of Cocoon storage room with Methyl Bromide at 0. 5 kg per 283 m 3 for 1 day or Chloropicrin at 0. 5 kg per 283 m 3 for three days. 17 October 2021 www. hbmahesh. weebly. com 9
Acknowledgements to i. Internet ii. Hand book on pest and disease control of mulberry and silkworm 17 October 2021 www. hbmahesh. weebly. com 10
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