Department of Zoology, Govt. Raza P. G. College, Rampur, U.P., India
*Correspondence author's E-mail: akscsir@rediffmail.com
Additional morphological characteristics/variations of an ischnoceran biting louse, Degeeriella regalis infesting black kite (Milvus migrans) have been recorded through lM and SEM. the microtopography of egg, the chaetotaxy of three nymphal instars and the nature of antennal sensilla have also been discussed.