Novel splitting / lumping index reflects the history of species concepts applied to bumblebees (Insecta: Apidae) Author Williams, Paul H text Zoological Journal of the Linnean Society 2022 2022-10-01 196 2 704 719 https://academic.oup.com/zoolinnean/article/196/2/704/6540035 journal article 10.1093/zoolinnean/zlab123 0024-4082 7184415

data from using Continued secretions, compared cephalic labial gland Table 4

Source	Smith, 1854	von Dalla	Skorikov, 1923	Reinig, 1935	Williams, 1998	Williams et al.,	Combined list of
		Torre, 1896				2020 (‘ present’)	candidate species
			*	*	*	qilianensis	qilianensis
		keriensis	keriensis	keriensis	keriensis	keriensis	keriensis
			separandus	x	x	separandus	separandus
			kozlovi				kozlovi
All taxa in species-group de-	14	32	69	100	114	116
scribed to date
Present species described to date 6		13	19	21	23	25
Present species described to date 6		13	21	17	25	25
or examined by author (S P) Total species reported by author	6	13	30	10	17	25
(S A)