Family: Megachilidae
Subfamily: Megachilinae
Tribe: Megachilini
Genus: Schizomegachile Michener, 1965
Common name: none


The single species in this genus, Schizomegachile monstrosa, has a black integument and sparse white hairs throughout its body (Houston 2018). They range in body length from 17–22 mm (Michener 2007). Schizomegachile had previously been considered a subgenus of Megachile but was elevated to genus status by Gonzalez et al. (2019).

Diagnostic characteristics

(modified from Michener 1965; Michener 2007)

  • Preoccipital carina present laterally.
  • Pronotal lobe with lamellate carina.
  • Female tarsal claws three-toothed.
  • Female S6 with a median ridge.
  • Female T6 has a shiny, flat-topped longitudinal ridge.
  • Male front tarsus is enlarged and pale.
  • Male hind tibia lacks spurs, but has a single large apical spine.
  • Male mandible is bidentate with a transparent basal lamella.
  • Male S4 is exposed, and less hairy and smoother than S3.
  • Male S6 divided by a broad median membranous region.

May be confused with

Schizomegachile may be confused with Hackeriapis as they have similar coloration, females share a similar mandible and clypeus shape, and the males of both groups have three exposed sternites (Michener 1965). However, Schizomegachile females have three-toothed tarsal claws and a projection on S6 (Michener 1965). Schizomegachile males have bidentate mandibles, lack hind tibial spurs (and instead have an immovable spine), and do not have teeth on the apical margin of T6 (Michener 1965).

Host associations

Schizomegachile are known to visit flowers of plants in the family Myrtaceae (Houston 2018).

Nesting behavior

Schizomegachile nest in pre-existing cavities and have been observed nesting in bamboo trap nests (Houston 2018). They use masticated plant material in the construction of their nests and partitions between nest cells (Houston 2018).


Schizomegachile consists of one species, S. monstrosa (Michener 2007); this species is not known to occur in the U.S. or Canada.

Known invasives

There are no known invasives. 


Schizomegachile occurs in the temperate regions of eastern and western Australia (Michener 2007).

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

Specimens of this taxon not available for imaging.