Table 1.

A list of non-native bee species around the world, sorted by family and including their probable method of introduction (deliberately introduced: I; accidentally introduced: A; naturally expanding or shifting range: N), year of introduction, origin, and known areas of introduction. Question marks (?) represent uncertainty in the timing or distribution of introduced and native range. This often occurs when the bee fauna of a given area has only recently been studied and in some cases the non-native species has potentially been present for a long time.

Colletidae (8)	Non-native Species		Year	From	Found in	Reference
	Chilicola rostrata	A	2008	Argentina	Chile	[8]
	Hylaeus (Prosopis) variegates	A	1990	North Africa	New York City	pers. comm. S. Droege
	Hylaeus albonitens	A	1995	Australia	Hawaii	[9]
	Hylaeus hyalinatus	A	1990	Europe	New York City, S Ontario, New Jersey, Pennsylvania	[10,11]
	Hylaeus leptocephalus	A	1900	Europe	US, S Canada	[9,11,12]
	Hylaeus punctatus	A	1980	Europe	US, Chile, Canada, Argentina, Brazil	[11]
	Hylaeus strenuus	A	2007	Asia	Hawaii	[13,14]
	Hyleoides concinna	A	1980	Australia	New Zealand	[15]
Andrenidae (1)
	Andrena wilkella	A	1900s	Europe and N Asia	NE US and S Canada	[11,12,16]
Halictidae (8)
	Halictus tectus	A	2000	Europe to Mongolia	Philadelphia, Baltimore, Washington, DC	[12]
	Lasioglossum eleutherense	A	1990	Bahamas and Cuba	Florida	pers. comm. S. Droege
	Lasioglossum imbrex	A	2013	US	Hawaii	[17,18]
	Lasioglossum impavidum	A	2003	W US	Hawaii	[9]
	Lasioglossum leucozonium	A	1900s	Europe and North Asia	US and S Canada	[11,16]
	Lasioglossum microlepoides	A	2013	continental US	Hawaii	[17,18]
	Lasioglossum zonulum	A	?	Europe and S China	North America	[11]
	Nomia melanderi	I	1970	North America	New Zealand	[19]
Megachilidae (33)
	Afranthidium (Immanthidium) repetitum	A	2000	Africa	Australia	[20]
	Anthidium manicatum	A	1960	Europe, N Africa, Near East	Chile, Brazil, Argentina, Uruguay, the US, Canada, New Zealand, Siberia, Peru, Suriname, Paraguay	[11,12,16]
	Anthidium oblongatum	A	1990	Europe and Near East	NE US and S Canada	[11,12]
	Anthidium vigintiduopunctatum	A	2006	South America, Ecuador, Peru	Galapagos, Fiji?	[21,22]
	Chelostoma campanularum	A	1960	Europe and Near East	New York, Connecticut, and S Ontario	[11,23]
	Chelostoma rapunculi	A	1960	Europe and Near East	New York and S Ontario	[11,23]
	Coelioxys coturnix	A	2000	Europe, North Africa, Mediterranean, India?	E US	pers. comm. S. Droege
	Heriades truncorum	A	2010	Europe and Near East	Maryland	pers. comm. S. Droege
	Hoplitis adunca		2016	Europe, Asia, Africa	Britain	[24]
	Hoplitis anthocopoides	A	1960	Europe	US, S Ontario	[11,25]
	Lithurgus bractipes	A	?	?	Fiji	[26]
	Lithurgus chrysurus	A	1970	Europe, Near East, N Africa	Pennsylvania and New Jersey	[12]
	Lithurgus huberi	A	1907	Asia	South America, Argentina	[27,28,29]
	Lithurgus scabrosus	A	1907	Europe	Hawaii, Vanuatu	[9]
	Megachile apicalis	A	1930	Europe, N Africa, Near/Middle East	US, Canada	[11,12]
	Megachile australis	A		SE Asia	Vanuatu, Samoa	[26]
	Megachile chlorura	A	1988	Philippines	Hawaii	[9]
	Megachile concinna	A	1940	Africa	West Indies, Mexico, US, Argentina	[12]
	Megachile ericetorum	A	2000	Europe, Near East, China	S Ontario and New York	[11]
	Megachile fullawayi	A	1921	Guam	Hawaii	[30]
	Megachile gentilis	A	?	W US	Hawaii	[9,31]
	Megachile lanata	A	1700–1800	India and China	West Indies and N South America, Florida, Antilles, Hawaii	[32]
	Megachile rotundata	I,A	1920–1940	Europe to China	North America to N Mexico, New Zealand, Chile, Argentina, Australia, Canada, Denmark	[11,12,19,33]
	Megachile rufipennis	A	1511–1867	Old World	Antilles	[32]
	Megachile sculpturalis	A	1990	Far east China, Korea, Japan	US, S Canada, Europe	[11,12,34,35]
	Megachile timberlakei	A	2010	Hawaii?	Galapagos	[9,22,36]
	Megachile umbripenne	A	2013	S Asia	Fiji, Samoa, Hawaii?	[9,26]
	Osmia caerulescens	A	1800s	Europe, N Africa, Near East, India	US, S Canada, New Zealand	[11,12]
	Osmia cornifrons	I	1960	East China, Japan	US, Denmark, Korea	[12]
	Osmia cornuta	I	1980	Europe, N Africa, Near East	establishment not documented	[37]
	Osmia ribifloris	I	1991	W US	Maine/E US, establishment uncertain	[38]
	Osmia taurus	A	2000	East China, Japan	E US, Michigan	[16] Gibbs et al in prep
	Pseudoanthidium nana	A	2000	Europe and Near East	NE US	pers. comm. S. Droege
Apidae (30)
	Amegilla pulchra	A	?	Australia	Fiji	[39]
	Anthophora villosula	I	1980	Japan	E US	[12]
	Apis cerana	A	2007	Asia	Australia, Russia, Iran (Crane 1995), Papua New Guinea (Bradbear and MacKay 1995), Samoa, Fiji, Vanuatu	[40]
	Apis dorsata	A	?	Asia	Japan	[41]
	Apis florea	I	1985	Oman, Asia, Indonesia	Iraq, Sudan (Glaiim 2005)	[42,43,44,45]
	Apis mellifera	I	1620	N Europe, Meditteranean	globally introduced	[11,12]
	Bombus hortorum	I	1885	UK	New Zealand	[19]
	Bombus hypnorum	N	2001	Europe	UK	[46,47]
	Bombus impatiens	I	2003	North America	Chile, Mexico, Central America, Canada	[33,48]
	Bombus lucorum		1981	Europe, China	Iceland	[19]
	Bombus ruderatus	I	1885	UK	New Zealand, Chile, Argentina, Patagonia, Canary Islands	[19,33,49]
	Bombus subterraneous	I	1885	UK	New Zealand	[19]
	Bombus terrestris	I	1885	UK	Chile, China, Israel, Japan, Mexico, South Africa, South Korea, New Zealand, Tasmania, and Taiwan	[19,33,49,50,51]
	Braunsapis puangensis	A	2003	Asia, india	Fiji	[52,53,54,55]
	Centris nitida	A	2000	SW US, Mexico, central, S America	Florida	[56]
	Ceratina arizonensis	A	1950	W US	Hawaii	[9]
	Ceratina cobaltina	A	1970	Mexico	Texas	pers. comm. S. Droege
	Ceratina dallatorreana	A	1940	Meditteranean	California	[57]
	Ceratina dentipes	A	1909	Turkey, Cyprus, S Asia, Australia	Vanuatu, Fiji, Samoa, Cook Islands, Hawaii, Japan, Mauritius	[9]
	Ceratina smaragdula	I	1960	Pakistan, India, SE Asia	Hawaii, Australia	[9]
	Euglossa dilemma	A	2000	Mexico and Central America	Florida	[58]
	Peponapis pruinosa	N	?	Mexico	North America	[59]
	Plebia frontalis	I?	2010	Mexico, Central, South America	California	pers. comm. S. Droege
	Triepeolus remigatus	N	?	Mexico	North America	pers. comm. S. Droege
	Xenoglossa strenua	N	?	Mexico	North America	pers. comm. S. Droege
	Xylocopa appendiculata	A	2010	Japan and China	California	[60]
	Xylocopa augusti	A	2013	Argentina	Chile	[61]
	Xylocopa sonorina	I	?	W US	Samoa, Hawaii, Guam, Northern Marianas Islands, Japan	[9,41,62]
	Xylocopa tabaniformis parkinsoniae	A	1990	South Texas	W US	pers. comm. S. Droege
	Xylocopa tranquebarorum	A	2005	Asia	Japan	[63]