Found on hosta in mainly shade in residential organic garden in SW CT, surroundings are White Oak, norway maple, hemlock, rhododendron, compost bin. Approx. 1″ in length, horns also maybe 1″ long. No hairs. a shorter, stockier bug rather thanthe long, slim profile of say an Eyed Click Beetle. It also had a brown spike sticking out of it’s rear end (folded wings?)
From your clear description, tho the photo is not at a good angle nor very clear, I think your beetle might be a Broad-necked Root Borer.
If so this is a longhorned beetle, family Cerambycidae.
This beetle can be found in the northeastern US, as well as then west to Minnesota down to Oklahoma and to Florida.
The adults of this beetle feed on foliage of fruit trees and grapes. Larva feed on the roots of those plants.
The projection out the back is probably the ovipositor of a female beetle.