344 INSECTS AFFECTING STOCK AND POULTRY 



become unable to defend itself, or when an old or badly constructed 

 hive is used, that the moths are enabled to creep into a hive and 

 lay their eggs. 



When once established the comb is soon ruined by the activities 

 of the caterpillars (Fig. 350), which later on spin tough silken 

 cocoons throughout the hive. In severe attacks the dwindling 

 colony may desert the hive, leaving behind a foul mass of partially 

 eaten comb interlaced with webbing, defiled honey, and hundreds 

 of the destructive parasites in different stages. Methods of pre- 

 venting this injury may be inferred from the above statements. 



QUESTIONS 



1. Describe and give life history, of horse bot-fly. State remedies and means 



of preventing its attack. 



2. Do the same with the ox bot-fly or warble fly. State latest views. 



3. Are there any insects mentioned in this chapter which are directly injurious 



to man? 



4. Give habits and life history of the flesh-fly. 



5. What effects have horn-flies on cattle? Describe their habits. 



6. Give habits and life history of sheep bot-fly and remedial measures. 



7. Discuss the family Tabanidce. 



8. What causes the scab of sheep? Discuss at length. 



9. Give life history and remedies for the sheep tick. 



10. What remedial measures are suggested for lice on stock? 



11. What causes mange? 



12. Enumerate the pests of poultry. Discuss treatment of fowls and poultry 



houses to lessen their attacks. 



13. Give life history of the two cattle ticks in North America, and remedial 



measures. 



14. Discuss the bee moth. 



