Does anyone know what these are? The are tiny, about 2/8 in size and are quite hard to smash with fingers. They completely ruined half of the early Asparagus sprouts (killed 3 before the freeze hit and killed the rest) and now they are onto my shallots in the other part of the garden, already killed 2, and seems 2 more are on the way (haven't dug them out yet)... Looks like they have a 'star' looking end. I put the bulbs in water, and they sunk right away. I believe (not sure now) I saw some borer holes on asparagus at/under ground level