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Seasonal Occurrence and Population Dynamics of Trioza hirsuta Crawford (Homoptera: Psyllidae), A Gallinaceous Insect of Terminalia tomentosa W & A. Dhiman S.C., Singh Sangeeta Entomology Research Lab., Department of Zoology, M.S. (P.G.) College, Saharanpur 247 001, India. Abstract Trioza hirsuta, a gallinaceous insect caused leafroll, epiphyllous inrolling galls on the leaves of Terminalia tomentosa. Most of the gall formation occurred during July to October at an average temperature 27±2°C and 70±5% R.H. Maximum six and minimum one gall found on a leaf and up to 72 nymphs in one gall and 176 on one leaf were observed. The diapause occurred in egg stage from November to late April. There were 2–4 generations in a year. Two braconid parasitoid were observed parasitizing the older nymphs. Top Key words Leaf galls, Population dynamics, Seasonal occurrence, Terminalia tomentosa, Trioza hirsuta. Top | | |
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