sp. I believe it to be A. littoralis
. I have a number of these (from 4 IN counties as well as from southern Michigan) and they all share the following characters: 3 setae on stria 7 subapically, front tibial spur simple, metallic dorsum, no ocellate puncture on elytra, antennomeres 1-3 pale, legs dark, shallow elytral striae, flat intervals, and humeral tooth evident.
My only hesitation is that Downie & Arnett (1)
do not list it as occurring in Indiana (though I realize the book is full of errors).