The major visible plates along the dorsal midline of the mesosoma are: pronotal collar (low in Bembix, relative to the mesoscutum); mesoscutum (often simply called the scutum); scutellum; metanotum (very short); and the propodeum. When the wings are in the usual position at rest, the propodeum is obscured, as it is in species with particularly dense setae (hairs).

The U-shaped yellow mark on the mesoscutum is referred to as a discal mark. In some individuals (and species), the discal marks are much narrower than this, and the segments of the U are often not connected.

Bembix variabilis

Image courtesy Reiner Richter
https://inaturalist.ala.org.au/observations/25727992

- band on T1 has an angular median notch (in addition to the pair of more lateral emarginations)
- colour of metasomal bands is typically cream or off-white (but may be brighter yellow in some individuals)

https://inaturalist.ala.org.au/observations/25727992
(image courtesy Reiner Richter)

- tricoloured mandible
- large (broad?) S2 projection
- S6 elevated, angulate apically
- unusually dense & long pale hairs, including on T1 & propodeum
- metasoma mainly black, limited white markings

https://inaturalist.ala.org.au/observations/145146372
(image courtesy Brian Byrnes)

- central vertex above eye level
- clypeus & labrum wholly pale
- large yellow spot on mesopleura

https://inaturalist.ala.org.au/observations/145157864
(image courtesy Brian Byrnes)