You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: INSECTS 
Clue: This snout beetle reached Texas from Mexico around 1890 & spread into most cotton-growing areas of the U.S.
the boll weevil

Category: LOW COUNTRIES 
Clue: This name of one of the low countries means "low country"
netherlands

Category: FIRST LADIES 
Clue: A portrait of her, painted by her husband, hangs in grandson David's dining room

mamie eisenhower