Macrotera

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Hymenopterida
Ordo: Hymenoptera
Subordo: Apocrita
Superfamilia: Apoidea

Familia: Andrenidae
Subfamilia: Panurginae
Tribus: Perditini
Genus: Macrotera
Subgenera: M. (Cockerellula) – M. (Macrotera) – M. (Macroteropsis)

Species overview: M. anthracina – M. arcuata – M. azteca – M. bicolor – M. bidenticauda – M. carinata – M. crassa – M. echinocacti – M. haplura – M. knulli – M. laticauda – M. latior – M. lobata – M. magniceps – M. mellea – M. mortuaria – M. nahua – M. nigrella – M. opacella – M. opuntiae – M. parkeri – M. peninsularis – M. pipiyolin – M. portalis – M. robertsi – M. rubida – M. seminigra – M. sinaloana – M. solitaria – M. texana – M. tristella
Name

Macrotera Smith, 1853
References

Smith, F. 1853: Catalogue of the hymenopterous insects in the collection of the British Museum. Part 1. Andrenidae and Apidae. London: British Museum, [i] 1: 1–198 pp., pls. i–vi.
Snelling, R.R. & Danforth, B.H. 1992: A Review of Perdita, Subgenus Macrotera (Hymenoptera: Andrenidae). Contrib. Sci. Nat. Hist. Mus. Los Angeles Co. 436: 1–12.

Macrotera is a genus of bees native to North America, particularly diverse in the desert regions of the United States and Mexico.[1][2] According to Wilson and Carril, there are "around 30" species of Macrotera.[3] Macrotera are small to medium sized (2.0 mm to 16.0 mm) and often black or reddish in coloration. The genus was treated by P.H. Timberlake who, in addition to T.D.A. Cockerell, described most of the known species. Macrotera used to be considered part of the genus Perdita but was split apart by C.D. Michener in 2000. Most species are extreme specialists (oligoleges) with respect to pollen and will only collect pollen from a few closely related species or genera of plants, particularly the plant genus Sphaeralcea and various Cactaceae.
Species

These 31 species belong to the genus Macrotera:

Macrotera anthracina (Timberlake, 1980) i c g
Macrotera arcuata (Fox, 1893) i c g
Macrotera azteca (Timberlake, 1954) i c g
Macrotera bicolor Smith, 1853 i c g
Macrotera bidenticauda (Timberlake, 1953) i c g
Macrotera carinata (Timberlake, 1968) i c g
Macrotera crassa (Timberlake, 1958) i c g
Macrotera echinocacti (Timberlake, 1954) i c g b (barrel cactus macrotera)
Macrotera haplura (Cockerell, 1922) i c g
Macrotera knulli (Timberlake, 1960) i c g
Macrotera laticauda (Timberlake, 1953) i c g
Macrotera latior (Cockerell, 1896) i c g b
Macrotera lobata (Timberlake, 1953) i c g
Macrotera magniceps (Timberlake, 1960) i c g
Macrotera mellea (Timberlake, 1954) i c g
Macrotera mortuaria (Timberlake, 1954) i c g
Macrotera nahua (Snelling & Danforth, 1992) i c g
Macrotera nigrella (Timberlake, 1954) i c g
Macrotera opacella (Timberlake, 1956) i c g
Macrotera opuntiae (Cockerell, 1922) i c g b (sandstone mining bee)
Macrotera parkeri (Timberlake, 1980) i c g
Macrotera peninsularis (Timberlake, 1968) i c g
Macrotera pipiyolin (Snelling & Danforth, 1992) i c g
Macrotera portalis (Timberlake, 1954) i c g
Macrotera robertsi (Timberlake, 1968) i c g
Macrotera rubida (Timberlake, 1968) i c g
Macrotera seminigra (Timberlake, 1956) i c g
Macrotera sinaloana (Timberlake, 1958) i c g
Macrotera solitaria (Cockerell, 1897) i c g
Macrotera texana Cresson, 1878 i c g b (Texas macrotera)
Macrotera tristella (Timberlake, 1954) i c g

Data sources: i = ITIS,[4] c = Catalogue of Life,[5] g = GBIF,[6] b = Bugguide.net[7]
References

Charles Duncan Michener (2000). The Bees of the World. JHU Press. pp. 283–4. ISBN 978-0-8018-6133-8.
Snelling, Roy; Danforth, Bryan (1992). "A review of Perdita, subgenus Macrotera" (PDF). Contributions in Science: 1–12. Retrieved 23 April 2017.
Joseph S. Wilson; Olivia J. Messinger Carril (24 November 2015). The Bees in Your Backyard: A Guide to North America's Bees. Princeton University Press. p. 89. ISBN 978-1-4008-7415-6.
"Macrotera Report". Integrated Taxonomic Information System. Retrieved 2018-04-21.
"Browse Macrotera". Catalogue of Life. Retrieved 2018-04-21.
"Macrotera". GBIF. Retrieved 2018-04-21.
"Macrotera Genus Information". BugGuide.net. Retrieved 2018-04-21.