[2] Species slender 5.6-12mm long with extremely large hemispherical male terminalia, after which the common name globetail was created (see gallery).

The face is usually yellow, often with black markings, and has a prominent tubercle that only recedes slightly to the lower facial margin.

The scutum is glossy black with a wide yellow stripe that either terminates at the transverse suture or extends to the scutellum.

The dorsal lobe is slightly swollen at the top, round, and has a thick mass of long, coarse yellow hairs.

The ventral lobe is flattened, sometimes elongate, and often split into two parts at the tip, with sparsely-haired but a densely setulose longitudinal ridge on its inner side.