Smoky Tetanolita (
T. mynesalis) forewing is dark gray to blackish with larger and more contrasting reniform spot
Renia sobrialis - Antennae of male
T. floridana have node within basal third. Otherwise, may not be reliably separated but on average: the median band of
R. sobrialis is straighter;
T. floridana tends to have a dark patch at the apex;
T. floridana has a more contrasting st. line which continues onto the HW. See comments by Jason D. Roberts
here.