Subspecies of Vespa crabro in two different papers by Birula in 1925

@article{Dubatolov2003SubspeciesOV,
  title={Subspecies of Vespa crabro in two different papers by Birula in 1925},
  author={V. Dubatolov and J. Kojima and J. Carpenter and A. Lvovsky},
  journal={Entomological Science},
  year={2003},
  volume={6}
}
. Birula (1925b) was listedby Edwards (1994) and noted by authors such asBequaert (1931) and Carpenter and Kojima (1997).However, Birula (1925a) has been overlooked by subse-quent workers. The present communication aims toclarify the status of the four new subspecific namescontained in Birula (1925a).Birula (1925a) listed four subspecies of