Diversity of Hover Flies: (Insecta: Diptera: Syrphidae) from Agro Climatic Zones of Himachal Pradesh, India: Occasional Paper No. 416

Contents: 1. Introduction. 2. Material and methods. 3. Objectives. 4. Results. 5.  Discussion. 6. Summary. 7. Acknowledgements. 8. References. 9. Plates.