Genus: Aztecanthidium Michener and Ordway, 1964
Common name: none
Aztecanthidium have a somewhat elongate, parallel-sided body. They range in body length from 11–21 mm. They are either black with yellow maculations on their head and body, or almost entirely reddish-brown (Snelling 1987).
(modified from Michener and Ordway 1963)
Aztecanthidium resembles bees in the genus Notanthidium in its size, color, and parallel-sided shape, but Notanthidium lacks juxtantennal and preoccipital carinae and does not possess the lateral teeth on T5 or T6 that are present in Aztecanthidium.
There are no known invasives.
Floral associations are unknown.
Aztecanthidium is restricted to central Mexico, from the states of Puebla and Nayarit south to Oaxaca (Michener 2007).