Hypanthidioides

Taxonomy

Family: Megachilidae
Subfamily: Megachilinae
Tribe: Anthidiini
Genus: Hypanthidioides Moure, 1947
Subgenera: Anthidulum, Ctenanthidium, Dichanthidium, Dicranthidium, Hypanthidioides, Larocanthidium, Michanthidium, Mielkeanthidium, Moureanthidium, Saranthidium
Common name: none

Overview

Hypanthidioides are black or brown bees, most of which have limited yellow to pale yellow markings (Michener 2007). A small number have prevalent yellow coloration, like in the Anthidulum subgenus. They range in body length from 4.5–10 mm and have body forms that vary from slender to moderately robust (Michener 2007).

Diversity

Hypanthidioides contains approximately 51 species in 10 subgenera worldwide (Michener 2007); none are known to occur in the U.S. or Canada.

Diagnostic characteristics

(modified from Michener 2007)

May be confused with

Hypanthidioides may be confused with multiple small-sized anthidiine genera due to their similar colorations or body form. Hypanthidioides can be differentiated from Hypanthidium by the presence of juxtantennal carinae. Anthodioctes differs by possessing lateral preoccipital carinae. Austrostelis also looks similar, but the female lacks scopae (Michener 2007).

Known invasives

There are no known invasives.

Host associations

Floral resources of Hypanthidioides are relatively unknown. Hypanthidioides ferrugineum is reported to show a preference for Cuphea sp. (Lythraceae) (Gonzalez and Griswold 2011; Urban and Parizotto 2011). Hypanthidioides bifasciata appears to be a generalist. Members of the Michanthidium, Larocanthidium, and Ctenanthidium subgenera have modified mouthpart hairs, which may be a specialized adaptation for pollen collection from an unknown floral association (Urban 1997; Urban and Parizotto 2011; Alvarez et al. 2015).

Nesting behavior

The nesting habits of Hypanthidioides are mostly unknown. Hypanthidioides flavofasciata forms aerial nests of multiple, resinous cells (Schrottky 1902). Hypanthidioides arenaria build nests within small cavities, including abandoned eumenine wasp nests of one or more resinous cells (Laroca and Rosado-Neto 1975). Hypanthidioides bifasciata has been found nesting in trap nests and forms cell partitions and linings from resin (Alvarez et al. 2015). Hypanthidioides luciae and H. arenarium nests found in traps consist of one row, or occasionally two rows, of cells made of pale brown resin (Urban 1992; Aguiar et al. 2005).

Distribution

Hypanthidioides is restricted to the neotropical Central and South America. The subgenus Anthidulum occurs from Costa Rica south through Columbia to Paraná, Brazil and Tucumán and Misiones in northern Argentina (Smith-Pardo 2003; Michener 2007). Ctenanthidium occurs from Bolivia south to Paraná, Brazil; Uruguay; and Córdoba, Argentina. Dichanthidium occurs from Salta, Argentina; Santa Cruz, Bolivia; Minas Gerias and Matto Grosso du Sul, Brazil (Michener 2007; Parizotto and Urban 2010). Dicranthidium occurs from Paraná and Paraíba, Brazil; Valle, Colombia; and Trinidad (Urban 2002; Smith-Pardo 2003). Hypanthidioides occurs from Paraíba to Rio Grande du Sol, Brazil (Michener 2007). Larocanthidium occurs from Pará south to Paraná, Brazil west to Bolivia. Michanthidium occurs from Santa Catarina and Rio Grande do Sol, Brazil and south to Misiones and Tucumán, Argentina (Michener 2007). It may also be found in Costa Rica, although it is unlikely. Mielkeanthidium occurs from Santa Catarina and Rio Grande do Sol, Brazil. Moureanthidium occurs from Santa Catarina to Bahía, Brazil. Saranthidium occurs from Oaxaca and Veracruz, Mexico south through Colombia to Paraguay and Santa Catarina, Brazil (Smith-Pardo 2003; Michener 2007).

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

<p><em>Hypanthidioides panamense </em>female face, photo: C. Ritner</p>
Hypanthidioides panamense female face, photo: C. Ritner
<p><em>Hypanthidioides panamense</em> female lateral habitus, photo: C. Ritner</p>
Hypanthidioides panamense female lateral habitus, photo: C. Ritner
<p><em>Hypanthidioides panamense</em> female abdomen, photo: C. Ritner</p>
Hypanthidioides panamense female abdomen, photo: C. Ritner
<p><em>Hypanthidiodes mourei </em>male sterna, photo: C. Ritner</p>
Hypanthidiodes mourei male sterna, photo: C. Ritner