Q.70
The most destructive natural enemy of silk worm cocoon is
- Pests of Stored Silkworm Cocoons:
- The Dermestid Beetle (Dermestes spp.):
- In sericulture cocoon storage rooms and grainages, dermestid beetles (Dermestes ater and Dermestes cadverinus) are the most destructive natural enemies.
- Both larvae and adult beetles bore into dry cocoons to feed on dead pupae, cutting through silk filaments, staining silk fibers, and rendering cocoons unreelable as waste.
- Other Beetles Listed: Tribolium feeds on flour; Lasioderma on tobacco; Stegobium on dried bread.
- Conclusion: Dermestes is the most destructive natural enemy of silkworm cocoons (Option 2).
Correct option: (2) Dermestes
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