This paper relates to studies made on Habrochila laeta Drake (Tingidae - Hemiptera), a pest of Barlaria cristata, and the effect of the weather factors like temperature, humidity and rainfall on their population. The trends of the adult and nymphal cycles varied in opposite directions. The temperature and rainfall had no significant effect on the population while the morning humidity had significant positive correlation with the population trends i. c., when the humidity was high the population increased considerably.
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