__ Diagram, Graphics That Map Advent of Sunspots
Puzzle 12 of City Nicknames Hard Pack
Question is: __ Diagram, Graphics That Map Advent of Sunspots
and the answer is: BUTTERFLY
Word Meaning:
BUTTERFLY — A flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring.
Definitions from Wiktionary.