. Bulletin of the Natural History Museum Entomology. 110 WILLIAMS arcticus Dahlbom, 1832:50, not of Quenzel in Acerbi, 1802:253 (= B. hyperboreus Schonherr) cognatus Stephens, 1846:17, examined smithianus White, 1851:158 ⢠Taxonomic STATUS. Warncke (1986) listed B. cognatus as a synonym of B. museorum, possibly following Stephens (1846), who wrote of B. cognatus: 'Closely allied to Bo. Museorum, of which the exam- ples I possess may be immature specimens'. Pagliano (1995) listed B. cognatus as a species separate from both B. museorum and B. pascuorum, but without any explanation. Saunder
. Bulletin of the Natural History Museum Entomology. 110 WILLIAMS arcticus Dahlbom, 1832:50, not of Quenzel in Acerbi, 1802:253 (= B. hyperboreus Schonherr) cognatus Stephens, 1846:17, examined smithianus White, 1851:158 ⢠Taxonomic STATUS. Warncke (1986) listed B. cognatus as a synonym of B. museorum, possibly following Stephens (1846), who wrote of B. cognatus: 'Closely allied to Bo. Museorum, of which the exam- ples I possess may be immature specimens'. Pagliano (1995) listed B. cognatus as a species separate from both B. museorum and B. pascuorum, but without any explanation. Saunders (1896:366-367) wrote 'I have re-exam- ined the type of cognatus, Steph.,. . F. Smith placed it in the British Museum collection. . .' Saunders considered this specimen to be conspecific with B. agrorum (Fabricius), continuing: 'It is certainly not the species known on the Continent as cognatus\ A female in the NHM collection bears the following labels: (1) a red-edged printed 'Type'; (2) 'cognatus.' in handwriting identical to that of F. Smith; (3) '= agrorum / ' in handwriting identical to that of ;(4)''.Ihave examined this specimen and am unaware of any reason why it should not be considered the type of B. cogna- tus and (ignoring minor differences in colour pattern) conspecific with B. pascuorum. O Nomenclature. L0ken (1973) listed/?, cogna- tus Stephens, 1846, as anomen nudum, citing Sherborn (1925). However, the reference by Sherborn is to an earlier paper by Stephens (1829), so this does not affect the use of the name B. cognatus Stephens, 1846. ~>~ "'^ ..-^^ ^ rfqgwCMH*^^" r , , .''â - * --- i " St, _ ' v. «tj- S, ; v j 4 > ' . , -, \ j \ /it 1 j: â -' j ) \J \ . 1 \ 1 J \f Subgenus TRICORNIBOMBUS Skorikov Agrobombus (Tricornibombus) Skorikov, 1922a: 151, type- species Bombus tricornis Radoszkowski by monotypy Bombus (Tricornibombus) Tkalcti, 1960:70 Bombus (Tr.) imitator Pittioni imitator Pitti
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