[2][1] Males are colored as the female of their respective subspecies but have longer antennae and seven rather than six metasomal segments.

[1][3] The subspecies S. dubia haematodes is colored much like Triscolia ardens but can be recognized by the forewing only possessing two submarginal cells rather than three in T.

[2] This species ranges from New England to Florida and west to California in the United States.

[3] The wasp stings the grub and frequently burrows farther down to construct a cell and lay an egg on the host.

[1] Males of this species have been observed taking part in large mating flights from mid-August to early September in Virginia.