Family: Megachilidae
Subfamily: Megachilinae
Tribe: Anthidiini
Genus: Anthidioma Pasteels, 1984
Subgenera: none
Common name: none


Anthidioma females are medium-sized black bees with a stocky build that range in body length from 8–13 mm. They have abundant long grey to white hairs and no maculations on their thorax or abdomen (Michener 2007). They are not commonly found. Males of this genus are unknown (Michener 2007).


Anthidioma contains 2 species worldwide (Griswold and Gonzalez 2013); none are known to occur in the U.S. or Canada.

Diagnostic characteristics

(modified from Michener 2007)

May be confused with

Anthidioma is most similar morphologically to Afranthidium and Pseudoanthidium, however, they differ in the lack of hair on the propodeum and the absence of yellow maculations (Michener 2007).

Known invasives

There are no known invasives.

Host associations

Floral associations of Anthidioma are largely unknown; however, a single specimen of Anthidioma was observed on Fabaceae (Gess and Gess 2007).

Nesting behavior

Nesting behavior is unknown. However, Anthidioma is in the series of wool carder bees, so they likely use plant materials to build cotton-lined nest cells rather than using resin.


Anthidioma only occurs in western Cape Providence, South Africa, and Namibia (Michener 2007).

Distribution map generated by Discover Life -- click on map for details, credits, and terms of use.

<p><em>Anthidioma chalicodomoides</em> female face, photo: C. Ritner</p>
Anthidioma chalicodomoides female face, photo: C. Ritner
<p><em>Anthidioma chalicodomoides</em> female lateral habitus, photo: C. Ritner</p>
Anthidioma chalicodomoides female lateral habitus, photo: C. Ritner