Serrate (or pectinate/flabellate) antennae distinguish this genus (and subfamily) from Malthodes and related genera in the Malthininae, which have filiform (or subserrate) antennae(2)
Range
New World genus (e. US to Central America, &West Indies); in our area, 4 spp. of the nominate subgenus range from e. US to TX (2 spp. being FL endemics(3)), and T. (Thinalmus) bicolor is restricted to AZ(2)