Hello,The USPS will not send you a note, if the parcel was opened and inspected in customs then you will recive a letter from the USDA or a phone call depending on the agent and port of entry.
I had in the past received both letters and calls from USDA officers. Not a good experience so be aware and do it at your own risk!!!!!
Now the beetles from Taiwan, the person who imported them was or still is in jail for the illegal importation of these many beetles.
The investigation was conducted nation wide as this person had records of custumers.