Vol. 12, Special Issue 11 (2023)

Author(s):
Balaji Nayak M, Dr. C Chinnamade Gowda, Chidananda Hirematha and Dr. Aravinda Hubballi

Abstract:
The genus Raoiella represents one of the important genera of the family Tenuipalpidae, which comprises half a dozen species. Members of this group have been given the status of an economic species. Present experiment was carried out on different developmental stages of R. macfarlanei viz., egg, larva, protonymph, deutonymph and adults were described under laboratory conditions at UAS GKVK Bengaluru. Current study revealed that, eggs are ovoid in shape, reddish in colour, soft, smooth measured 96.0 long and 62.0 wide, larva with three pairs of legs measured 174.0 long and 119.0 wide, the protonymph possessing four pairs of legs 185.0 long and 127.6 wide, the deutonymph larger in size than protonymph, red in colour, 267.0 long and 184.0 µm wide and the freshly emerged adult almost similar in size of deutonymph except for development of genital structures. Posterior end of male is conical in shape while that of the female is broader.