Genus: Microthurge Michener, 1983
Common name: none
(modified from Michener 2007)
There are no known invasives.
The nesting habits of most species of Microthurge are not known. Female M. corumbae excavate nests in dry rotten wood, forming cells without partitions. They may share common nest entrances; communal nesting reduces parasitism rates because some individuals guard nests while others forage (Garófalo et al. 1992). Nests may be reused by the following generation (Garófalo et al. 1992). Two types of cocoons may be formed by alternating M. corumbae generations. The first annual generation forms thin, single-layered cocoons and exhibits a short diapause (Mello and Garófalo 1986). Alternatively, the second generation forms thick, double-layered cocoons which, presumably, offer greater protection from predators, pathogens, or harsh climactic conditions during the extended diapause period (Mello and Garófalo 1986).
Microthurge occurs in South America from Cochabamba, Bolivia east to São Paulo, Brazil and south to Buenos Aires province, Argentina (Michener 2007).