Scaptotrigona xanthotricha Moure, 1950

Engel, Michael S., 2022, Notes on South American stingless bees of the genus Scaptotrigona (Hymenoptera: Apidae), Part II: Subgroup A of the postica species group, Journal of Melittology 2022 (110), pp. 1-51 : 48-49

Scaptotrigona xanthotricha Moure

Melipona trombeta Müller, 1875: 43 , nomen nudum.

Trigona aethiops Müller, 1921: 302 , nomen nudum.

Trigona trombeta foetida Müller, 1921: 320 , nomen nudum.

Scaptotrigona postica xanthotricha Moure, 1950: 78 .

Nannotrigona (Scaptotrigona) postica xanthotricha (Moure) ; Moure, 1953: 136.

Trigona (Scaptotrigona) xanthotricha (Moure) ; Kerr, 1960: 386.

Trigona (Scaptotrigona) xanthotrycha (Moure) ; Sakagami et al., 1963: 116, lapsis calami.

Scaptotrigona xanthotrica (Moure) ; Nogueira-Neto, 1970: 34, lapsis calami.

DIAGNOSIS: Like the previous species, this is a robust bee similar to the Amazonian S. nigrohirta , but occurring in southern and eastern Brazil. It can be distinguished from S. nigrohirta by the typical presence of more minute plumose setae on tergum I in S. nigrohirta (although not all S. nigrohirta have such setae, either worn or truly lacking), versus their absence in S. xanthotricha ; and by the typically black bristles of the mesoscutal anterior border in S. nigrohirta versus the fulvous to dark fulvous bristles of S. xanthotricha .

MATERIAL EXAMINED: 4⚲⚲, Brazil: Retiro, Pedro do Rio, Est. do Rio, III-1954 [March 1954], C.A.C. Seabra coll. ( SEMC); 3⚲⚲, Brazil: Ritapolis, MG [Minas Gerais], SF-23, 44-21d/ 19-I-1974 [19 January 1974], M. Mazucato, Velthuis, J.M.F. Camargo leg. ( SEMC); 2⚲⚲ [on same pin], Brazil: S.J. Petropolis, Espirito Santo, II-1955 [February 1955], P. Tetes e F. Oliveira ( SEMC) .