Itchbite
Source: Vendor. A bug? Wait a minute, no, it's a small friendly spider! Undead type. Sold for 2250x by located in "The Little Strings" at the Umbral Bazaar in 's . You'll need to progress on the leveling campaign in this zone to interact with this vendor.
Itchbite is a spider pet available from multiple vendors in Azj-Kahet who accept Kej or Polished Pet Charms.
Guide awaiting review
Locate a pet vendor
Travel to the Umbral Bazaar in Azj-Kahet's City of Threads and find Clutchmother Marn'tiq at 44.2, 17.1. If the vendor interaction is unavailable, try Tyro Uwe at 44.96, 16.66 or Calmest Gobbu at 46.51, 29.33 instead. You'll need to progress through the zone's leveling campaign to interact with these vendors.
Purchase Itchbite
Buy Itchbite for 
2250 Kej or 
500 Polished Pet Charms, depending on which vendor you choose.
