Morphometric analysis of fossil bumble bees (Hymenoptera, Apidae, Bombini) reveals their taxonomic affinities Author Dehon, Manuel Author Engel, Michael S. Author Gerard, Maxence Author Aytekin, A. Murat Author Ghisbain, Guillaume Author Williams, Paul H. Author Rasmont, Pierre Author Michez, Denis text ZooKeys 2019 891 71 118 http://dx.doi.org/10.3897/zookeys.891.36027 journal article http://dx.doi.org/10.3897/zookeys.891.36027 1313-2970-891-71 F3F32E940AB749C4A108162690F122B4 76F1823B3926587AB20B249DB0DD1D1B Genus Oligobombus Antropov, 2014 Type species. Oligobombus cuspidatus Antropov, 2014, by original designation. Diagnosis. Sex unknown. Forewing distinctly pointed apically (apparently taphonomically altered); three submarginal cells of approximately equal sizes; marginal cell elongate, longer than distance between its apex and forewing tip, with apex roundly truncate; forewing distal membrane papillate; pterostigma short, with margin within marginal cell straight, approximately 4.0 times as long as prestigma; r-rs arising from distal part of pterostigma after its midpoint; 1rs-m straight; 2rs-m with posterior half curved apically; angle between 1rs-m and part of M inside third submarginal cell obtuse; first submarginal cell with an oblique translucent vein rs and not wider than second submarginal cell; second submarginal cell shorter than third marginal cell; third submarginal cell widest; 1m-cu slightly curved anteriorly, reaching second submarginal cell in its midpoint; 2m-cu curved anteriorly, reaching M basad 2rs-m; distance between anterior ends of 1m-cu and 2m-cu exceeding their length; basal vein slightly basad cu-a. See Antropov et al. (2014) for original diagnosis.