Bombus (Alpigenobombus) genalis Friese 1918
Creators: name: Williams, Paul H.
name: An, Jiandong
name: Dorji, Phurpa
name: Huang, Jiaxing
name: Jaffar, Saleem
name: Japoshvili, George
name: Narah, Jaya
name: Ren, Zongxin
name: Streinzer, Martin
name: Thanoosing, Chawatat
name: Tian, Li
name: Orr, Michael C.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Bombus
Bombus genalis

description: 8. Bombus (Alpigenobombus) genalis Friese, 1918
Figs 6, 74‒75, 113
Bombus genalis Friese, 1918: 84.
Species-taxon concept and variation
The taxon concept of the species B. genalis here agrees with the long-standing interpretation (Williams 2022a) that it is separate from the taxon concepts of other species in the subgenus Alpigenobombus, based on: (1) our PTP analysis supports independent species-level coalescents in the COI gene (Fig. 12); corroborated by (2) diagnostic morphological character states (see the keys).
The PTP and morphological results (Fig. 12, keys) support the interpretation that B. genalis and B. breviceps are separate species. The available COI-barcode-like sequences may all be low-divergence neonumts (Fig. 11).
No substantial colour-pattern variation is known for B. genalis (Figs 74‒75). Bombus genalis, with its black with orange-legged colour pattern, appears to mimic the common B. (Pyrobombus) flavescens Smith, 1852, and B. (Melanobombus) eximius Smith, 1852 (Williams 2007: fig. 5a).
Type material
Bombus genalis Friese, 1918: 84. Syntypes: ♀♀ (queen and worker) Sikkim, India (ZMHB). Examined.
Morphological diagnosis
Female
Wings pale yellow with the veins light orange (unique within the subgenus Alpigenobombus), hair short, oculo-malar area shorter than broad, clypeus in its central area shining with only a few small and large widely-spaced punctures (cf. B. breviceps); mid and hind tibiae exoskeleton and hair bright orange, hair of the thoracic dorsum and T1 black.
Male
Wings pale yellow with the veins light orange (unique within the subgenus Alpigenobombus), hair short, oculo-malar area shorter than broad; genitalia (Fig. 113) with the gonostylus nearly equally short on both its outer side and its inner side but with the distal lobe projecting inwards as a long broadly triangular acutely pointed process, triangular in section (cf. B. breviceps, B. grahami); mid and hind tibiae exoskeleton and hair bright orange, the hair of the scutellum and T1 predominantly black.
Material sequenced in Fig. 12
CHINA • 1 ♀ (worker); Xizang, Linzhi; 29.5710° N, 95.4633° E; 29 Aug. 2015; Q.-T. Wu leg.; IOZ seq: FPW12; IOZ: AG#184.
Additional sequences in Fig. 10 and haplotype duplicates
CHINA • 1 ♀ (worker); Yunnan, Guanshizhai; 25.9334° N, 98.8008° E; 18 Aug. 2011; PW seq: PWB9; IAR: AG#040 • 1 ♀ (worker); Xizang, Miyuecun; 29.4065° N, 95.3721° E; 18 Aug. 2015; Q.-T. Wu leg.; IOZ seq: FPW13; IOZ: AG#185.
INDIA • 2 ♀♀ (workers); Arunachal Pradesh, Salaya; 27.5969° N, 93.851° E; 22 Jun. 2018; J. Narah leg.; NCBS seq: BG463 BG471; NCBS: AG#200, AG#201 • 1 ♀ (worker); Arunachal Pradesh, Hari; 27.5838° N, 93.8446° E; 27 Sep. 2015; NCBS seq: BE637; NCBS: AG#202.
Global distribution
Himalaya and borders of southern Hengduan: India (Sikkim, Arunachal Pradesh), China (Xizang, Yunnan), Myanmar: IAR, IOZ, NCBS, NHMUK, PW, ZMHB.
This is an uncommon species and few individuals have been recorded. This species is recorded at elevations of 1561‒1852 m in the Himalaya in the middle forest zone (Streinzer et al. 2019).
Behaviour
Male eye very slightly enlarged relative to female eye, male mate-searching behaviour unknown.
description: Published as part of Williams, Paul H., An, Jiandong, Dorji, Phurpa, Huang, Jiaxing, Jaffar, Saleem, Japoshvili, George, Narah, Jaya, Ren, Zongxin, Streinzer, Martin, Thanoosing, Chawatat, Tian, Li & Orr, Michael C., 2023, Bumblebees with big teeth: revising the subgenus Alpigenobombus with the good, the bad and the ugly of numts (Hymenoptera: Apidae), pp. 1-65 in European Journal of Taxonomy 892 (1) on pages 41-42, DOI: 10.5852/ejt.2023.892.2283, http://zenodo.org/record/8382675