I'm not talking about tea that has been intentionally cultivated for insect-bitten leaves.
I'm talking about pouring tea and seeing very small ants or what look like beetles on the bottom of the cup. I've noticed this with Chinese green teas (namely long jing and anji bai cha) from two different sources. The teas are about mid-range in price - some $30-45 per 100g. Bugs can be seen as often as about every 5th batch of tea that I brew in my gaiwan.
The question is: are the bugs a sign of poor quality? Do they most likely originate on the field, which could mean a low use of pesticides? Alternatively, have they found their way into the tea in storage, which would imply improper storage or cleaning?