Key to Espírito Santo species of Tenthecoris

1 Species less than 4 mm length; scutellum uniformly black; dark area of hemelytra largely oval; membrane with darkened areola; pronotum calli and anterior area redder than the disc.............................................. T. nanus

- Species longer than 4mm; scutellum not uniformly black; dark area of hemelytra with an irregular shape; areola darkened only at the base; pronotum calli and anterior area not redder than the disc................................. T. orchidearum