This voracious 'insect' appeared after two days of rain and in that short time is well on the way to consuming our gooseberry bush. There were quite a few of them which we removed by hand. We fear there are more to come. I'm not sure if they came from the brown egg case shown, but it was attached to a branch in close proximity to the most damage. Last year this same creature destroyed a larger gooseberry bush. It seems to be specific to the gooseberry. We thought we had it under control. Help please!