Both the femora and tibiae are club-shaped. Nannodioctria seminole has been recorded in FL and AL, and Nannodioctria albicornis is known from CA.
Nannodioctria seminole
Long-stalked antennae similar to Taracticus and Cerotainia. Black thorax with silver stripes on sides. Abdomen black on dorsum and mostly orange-yellow on sides. Orange-yellow legs with black rear tibia.
Size: 8 mm
Range: FL (Holotype from Tallahassee) and AL (Oak Mountain SP)
Season: May in both AL and FL
References
Bromley, S. W. (1921). Bot & Zool. Occasional Papers of the Boston Society of Natural History, 5, 125-127.
Robber Flies of Florida 