Insect we hear in the country (4)

I believe the answer is:

laos

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'country' is the definition.
(I know that Laos is a country)

I don't understand the rest of the clue.

(Other definitions for laos that I've seen before include "Republic of southeast Asia" , "Country between Thailand/Vietnam" , "Landlocked south-east Asian country" , "Asian country, capital Vientiane" , "Country of SE Asia" .)

I've seen this clue in The Times.

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