Hi...My E.campestratus has probably lost at least half of it's abdominal size over the last 3-4 weeks.(REALLY dramatic size decrease!) I have seen it eat good sized red runner at least 3 times during that time period. This is a spider I purchased as a small sling approximately 1 1/2 years ago so it is not really an 'elderly' spider. It has been very active and continues to cruise alot! Any ideas what might be going on? I am becoming concerned at this point but suspect there's nothing I can do but continue good care.