Characteristics
The species most similar to Sobarocephala cruciger in North America is S. quadrimaculata, which has a similar arista, head and colour pattern. The scutellum and epandrium are entirely brown in S. quadrimaculata, however, as is the dorsum of tergites 3, 4 and 6. There is also one pair of anterolateral spots on the scutum in addition to the supra-alar spots, not one pair of posteromedial spots, and the surstylus is subrectangular (not pointed).

Similar species
The species most similar to Sobarocephala cruciger in North America is S. quadrimaculata, which has a similar arista, head and colour pattern. The scutellum and epandrium are entirely brown in S. quadrimaculata, however, as are tergites 3, 4 and 6. There is also one pair of anterolateral spots in addition to the supra-alar spots (not one pair of posteromedial spots), and the surstylus is subrectangular (not pointed).

Sobarocephala affinis and S. muesebecki also have a densely plumose arista, but the sides of the frons are parallel, the ocellar bristles are well-developed, the face is flat and the thorax is entirely yellow.

Distribution
Sobarocephala cruciger
is known only from peninsular Florida.