Hypanthidioides (Michanthidium), Urban

Gonzalez, Victor H. & Griswold, Terry L., 2011, Taxonomic notes on the small resin bees Hypanthidioides subgenus Michanthidium (Hymenoptera, Megachilidae), ZooKeys 117, pp. 51-58 : 53

Subgenus Michanthidium Urban

Gnathanthidium Urban 1993 [1992]: 337 (not Pasteels 1969: 92). Type species: Gnathanthidium sakagamii Urban, 1992 [= Anthidium albitarse Friese, 1917]

Michanthidium Urban 1995 [1994]: 281. Nomen novum pro Gnathanthidium Urban, 1993.

Comments.

Michanthidium is most similar to the subgenus Larocanthidium , from which it can be separated by the following characters: female mandible without distinct carinae on outer surface, without a strong basal tooth separated from mandibular margin by a deep emargination; male T6 without distal margin expanded, elevated, or bilobed medially. In the key to the subgenera of Hypanthidioides ( Michener 2007), the presence of a hind coxal spine in the male is one of the characters that separates Michanthidium from Larocanthidium . However, this spine is not present in the male of Hypanthidioides ferrugineus and therefore should be removed from the key.