Well if you are talking about the invasion that has taken place in Greenshore in the north of the Tibian capital so far and it probably does not give you more than the opportunity to face the creatures of the invasion (Insectoid Scout). These raids do not give you the drop of silver tokens and the lot of this creature is bad giving only a few coins of more value. This invasion is quite strange since the most propitious place for these creatures to exist is on the island of Quirefang along with other incects and it is very far from the location of the invasion, that may be the answer for these creatures to be so weak. Apparently these creatures only occur there and only in invasions that are not so rare. It is a challenge to complete the bestiary as they appear in pairs in certain locations west of Greenshore but the good news is that invasions occur throughout the day.