Bombus


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  Orientalibombus annotated checklist
KallobombusSubterraneobombus Orientalibombus
Back to tree Number of species in equal-area (611,000 kmĀ²) grid cells with an equal-interval blue scale.
3 species

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B. haemorrhoidalis
B. haemorrhoidalis worker visiting Pteracanthus.

Orientalibombus
ecology and behaviour

 

HABITAT: Forest at relatively low altitudes.

 

FOOD-PLANTS: Long tongue-length bumblebees visiting deep flowers.

 

NESTING BEHAVIOUR: Nests undescribed, but likely to be pocket-makers.

 

MATE-SEARCHING BEHAVIOUR: Males patrol circuits of scent marks.

 

Subgenus ORIENTALIBOMBUS Richards
Bombus (Orientalibombus) Richards, 1929c:378, type-species Bombus orientalis Smith (= Bombus haemorrhoidalis Smith) by original designation
Bombus (Orientalobombus) Kruseman, 1952:102, unjustified emendation

braccatus

funerarius

haemorrhoidalis

 

Bombus (Or.) funerarius Smithsubgeneric listall names
funerarius Smith, 1852b:47, examined
priscus (Frison, 1935:349 [Bremus])
birmanus (Tkalcu, 1989:47 [Orientalibombus]) examined
4 names

MORPHOLOGY: photos of male genitalia.

DISTRIBUTION: Oriental Region.

 

Bombus (Or.) braccatus Friesesubgeneric listall names
braccatus Friese, 1905:512, examined
metcalfi (Frison, 1935:357 [Bremus]) examined
2 names

MORPHOLOGY: photos of male genitalia.

DISTRIBUTION: Oriental Region.

 

Bombus (Or.) haemorrhoidalis Smithsubgeneric listall names
hæmorrhoidalis [haemorrhoidalis] Smith, 1852a:43
orientalis Smith, 1854:402, examined
assamensis Bingham, 1897:550, examined
montivolans Richards, 1929c:382, examined
semialbopleuralis (Tkalcu, 1974b:322 [Orientalibombus])
cinnameus (Tkalcu, 1989:47 [Orientalibombus]) examined
16 names

TAXONOMIC STATUS: Several of these nominal taxa have been treated as separate species, most recently in the case of B. montivolans [Burma to southern China] (e.g. Tkalcu, 1968b, 1989). However, aside from differences in colour pattern, they are all closely similar in morphology with a range of variation (Williams, 1991 [pdf]). Until more evidence to the contrary is available from critical studies of patterns of variation, I shall treat them as parts of a single variable species.

MORPHOLOGY: photos of male genitalia.

DISTRIBUTION: Oriental Region.

 

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