2 Unidentified Printed Pieces, 2x3 Dark Grey Slope and Black 2x2 Tile
The slope piece is Slope 33 3 x 2 with Insectoid Scope Pattern from 9 (or 10) Insectoid sets from 1998-99.



The 2 x 2 tile is Tile 2 x 2 with Insectoid Logo in Triangle Pattern from 9 (or 10) mostly-Insectoids sets.



There are a few sets with both pieces.