Bombus brasiliensis Lepeletier brasiliensis Lepeletier,

[1835]:470, examined 3 names

DISTRIBUTION: E Neotropical Region.

Bombus bellicosus Smith thoracicus Sichel,

1862:121, not of Spinola, 1806:30 (= B. pascuorum (Scopoli))

bellicosus Smith, 1879:131, examined Emiliae Dalla Torre,

1890:139, replacement name for thoracicus Sichel,

1862:121 7 names

DISTRIBUTION: E Neotropical Region, S Neotropical border.

Bombus atripes Smith atripes Smith,

1852a:44, examined 1 name

DISTRIBUTION: Oriental Region.

Bombus steindachneri Handlirsch
Steindachneri Handlirsch, 1888:239
TAXONOMIC STATUS: B. medius and B. steindachneri have been regarded both as separate species (Milliron, 1973a; Labougle, 1990) and as conspecific (G. Chavarría, pers. com.).
DISTRIBUTION: S Nearctic Region.

Bombus pullatus Franklin
niger Franklin, 1913:120, examined
pullatus Franklin, 1913:122, examined
TAXONOMIC STATUS: At least four species of the subgenus Thoracobombus from Central and South America have many individuals for which the pubescence is almost entirely black. The genitalia of the males are quite distinctive, but association of the conspecific females with these males has caused problems.
DISTRIBUTION: N Neotropical, W Neotropical Regions.

Bombus inexspectatus (Tkalcu)
lutescens Krüger, 1939:105, not of Pérez, 1890:154 (= B. flavidus Eversmann)
inexspectatus (Tkalcu, 1963:187 [Agrobombus])
[inexpectatus (Reinig, 1981:161 [Megabombus]) incorrect subsequent spelling]
DISTRIBUTION: Palaearctic Region.

Bombus brevivillus Franklin
brevivillus Franklin, 1913:119, examined
abditus (Tkalcu, 1966:271 [Megabombus])
DISTRIBUTION: E Neotropical Region.

Bombus personatus Smith
personatus Smith, 1879:132, examined
Roborowskyi Morawitz, 1887:197, examined

DISTRIBUTION: Oriental Region.

Bombus melanurus Lepeletier
melanurus Lepeletier, [1835]:469, examined
Tschitscherini Radoszkowski, 1862:591
[lan-tschóuensis Vogt, 1909:53, infrasubspecific]
subdistinctus Richards, 1928a:333, examined
lantschouensis Tkalcu, 1961:360, examined, not of Vogt, 1908:101 (= B. patagiatus Nylander)
TAXONOMIC STATUS: The taxa melanurus, difficillimus, and tschitscherini have been treated both as conspecific and as separate species (Williams, 1991 [pdf]). Aside from differences in colour pattern, they are closely similar in morphology.
Nonetheless, B. melanurus can be differentiated by the morphology of the male genitalia (Williams, 1991 [pdf]). Evidence from comparisons of 16S gene sequences is consistent with B. melanurus and B. difficillimus being separate species (Cameron et al., 2007 [pdf]). A study of larger samples of COI barcodes (Williams et al., 2011 [pdf]) supports the interpretation that B. melanurus is a broadly distributed species that includes the taxon tschitscherini, while B. difficillimus is well supported as a separate species. It remains possible that the taxon tschitscherini might be considered a separate species, depending on which species concept is applied.
DISTRIBUTION: Oriental, Palaearctic Regions.

Bombus fedtschenkoi Morawitz
Fedtschenkoi Morawitz in Fedtschenko, 1875:5, examined
fertoni Vogt, 1911:63, examined

DISTRIBUTION: Palaearctic Region.

Bombus appositus - Cresson, 1878
White-Shouldered Bumble BeeSynonym(s): Bombus (Subterraneobombus) appositus Cresson, 1878
Taxonomic Status: Accepted
Related ITIS Name(s): Bombus appositus Cresson, 1878
Informal Taxonomy: Animals, Invertebrates - Insects - Bumble Bees
Bombus appositus is a species of bumblebee known commonly as the white-shouldered bumblebee. It is native to western North America, including western Canada and the western United States.
This species is a host to Bombus insularis, a species of cuckoo bumblebee.

Bombus amurensis Radoszkowski
Amurensis Radoszkowski, 1862:590, examined
mongol Skorikov, 1912:607, examined
chaharensis Yasumatsu, 1940:94, type lost

TAXONOMIC STATUS: This species has been much confused with B. fragrans (Williams et al., 2011 [pdf]).

DISTRIBUTION: Palaearctic Region, Oriental borders.

Bombus sulfureus Friese
sulfureus Friese, 1905:521, examined

DISTRIBUTION: Palaearctic Region.

Bombus sibiricus (Fabricius)
fibirica [sibirica] (Fabricius, 1781:478 [Apis]) examined
flaviventris Friese, 1905:514, examined
ochrobasis Richards, 1930:655, examined
nikiforuki Tkalcu, 1961b:354, examined

COMMENT: B. flaviventris has long been placed in the subgenus Subterraneobombus (e.g. Skorikov, 1922a; Richards, 1930, 1968), although the characters of the females (Williams, 1991 [pdf]) and the males agree with the species of the subgenus Sibiricobombus.

DISTRIBUTION: Oriental, Palaearctic Regions.

Bombus obtusus Richards
obtusus Richards, 1951:196, examined

DISTRIBUTION: Palaearctic Region.