Golden Bug

The Golden Bugs are collected in The Legend of Zelda: Twilight Princess. There is one type of bug for each of the major areas of the world map, and there are two versions of each bug (male and female).

Locations

 * Gerudo Desert
 * Upper Zora's River
 * North of Castle Town (check the rocky northern part of the field for the female)
 * West of Castle Town
 * South of Castle Town
 * Field north of Kakariko Gorge (i.e. East of Castle Town)
 * Kakariko Village (one in the village and one in the Graveyard)
 * Kakariko Gorge
 * Bridge to Eldin
 * Faron Field
 * "Great Bridge of Hyrule" (the big bridge above Lake Hylia)
 * Sacred Grove

Purpose
The bugs are for Princess Agitha (sp?) who lives in Castle Town in a "shop" called Agitha's Castle. The "shop" is open day and night, and Link can give bugs to Agitha in exchange for Rupees and Wallet upgrades. The bugs come in pairs of male and female and Agitha will big you a purple rupee (50) for the first of a set (either sex) and an orange rupee (100) for the matching bug. 1800 total rupees can be earned this way. When all the bugs have been turned in, she rewards Link with the Giant Wallet that can hold 1000 Rupees, making it the biggest wallet in the game.

Tips
The best way to find bugs is with patience and a sharp eye. It's easier to look at night (especially in places like Gerudo Desert) because all the bugs glow. Another give away is the tinkling bell sound heard whenever Link is near a bug.

The Clawshot can be used to retrieve far away bugs, and some can only be obtained this way.

Most of the time, both bugs share the same "habitat." Look everywhere for the first bug, then note it's surroundings: tall grass, on a tree trunk, dark places, up high, etc. It's mate is most likely in the same habitat.