This species is named in honor of the great coccinellidologist Robert D. Gordon, author of some of the most comprehensive and valuable works on lady beetles of North and South America.
Size: 1.8 - 2 mm
Food: Poorly known; possibly mealybugs
Habitat: Poorly known
Range: New England to mid-Atlantic U.S.
Similar species: Diomus xanthaspis has reddish-yellow margin