1: National official is here, carrying identification, after challenge overwhelms local center (4-9)
2: Troop of monkeys around city garden spot (7)
3: One of the Marx brothers making a comeback as talk show host (5)
4: Quite put out, doctor axes red tape (11)
5: Animal hiding in abattoir (3)
6: Wrong, or sure one is wrong (9)
7: Heads appearing strange in distorting lens (7)
10: Those who study bugs' motion got less confused (13)
12: Weapons to attack BS, involving way with words (11)
15: Again put together pieces from rare comb in exhibit (9)
18: Sheds last one carelessly (4-3)
20: Was resident hidden in wild net? (7)
23: He is found in the alloy described (5)
26: Worthless even when recycled (3)