Worker Arachno

The Worker Arachno is an enemy in Xenoblade Chronicles that are members of the Arachno family. They can be found at level 8 between the Spring of Grief and Vilia Lake in Tephra Cave.They can drop the Arachno Silk, which is needed for the "Arachno Silk Fundraising" quest. A story variant can be fought alongside Director Arachnos just after Shulk and Reyn found the bodies of some traders by a small unnamed pond. The story variant drop no Treasure Chests and do not respawn.

Chests Rates

 * Wood = 81.2%
 * Silver = 17.8%
 * Gold = 1%

Wood

 * Materials
 * Insect Jaw - 79.9%
 * Arachno Silk - 20.1%

Silver

 * Crystals
 * Slow Resist I / Attack Stability I - 31.3%
 * Slow Resist I / Earth Cloak I - 31.3%
 * Weapons
 * Light Driver - 6.1%
 * Spark Lancer (2 slots) - 4.1%
 * Spark Lancer (3 slots) - 2.4%
 * Armors
 * Ranger Shoes - 8.6%
 * Light Top - 7.2%
 * Light Bottoms - 4.8%
 * Regnas Boots - 4.3%

Gold

 * Weapons
 * Brave Guarder - 10%
 * Arachno Driver - 5%
 * Unique Weapons
 * Flame Gear - 15%
 * Unique Armors
 * Steady Greaves - 51.5%
 * Pistis Cap - 7.7%
 * Graft Gauntlets - 6.5%
 * Messenger Shoes - 4.3%

Drops
This enemy drops no chests, and carries no items which can be stolen.