Scaura latitarsis (Friese)

Melo, Gabriel A. R. & Costa, Marco Antônio, 2004, A new stingless bee species of the genus Scaura (Hymenoptera, Apidae) from the Brazilian Atlantic forest, with notes on S. latitarsis (Friese), Zootaxa 544, pp. 1-10: 3-6

publication ID 10.5281/zenodo.157383

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Scaura latitarsis (Friese)


Scaura latitarsis (Friese)  

( Figs. 1, 3, 5 View FIGURES 1 – 6 , 7, 9, 11 View FIGURES 7 – 12 , 13 View FIGURE 13 )

Trigona latitarsis Friese, 1900: 388   . Lectotype worker (presently designated), Brazil: São Paulo, Jundiaí ( ZMHB).

Schwarz (1948) gave a very broad definition to Scaura latitarsis   . According to him, this species occurs from southern Mexico to the state of São Paulo, in Brazil. Examination of material deposited at the DZUP collection indicates that latitarsis sensu Schwarz (1948)   represents a species complex, here referred as the latitarsis   group. The only additional available name in this group is Trigona argyrea   , a species described by Cockerell (1912) from Guatemala, and placed in the synonymy of latitarsis   by Schwarz (1948). This name should be reinstated for populations from Central America, since specimens from this region (material examined from Guatemala and Costa Rica) show many differences from S. latitarsis   proper. Indeed, Scaura atlantica   , a new species proposed in this paper, exhibits several features in common with S. argyrea   , when compared to S. latitarsis   .

Friese (1900) described latitarsis   from three workers and several males from “ Brasilia: São Paulo” and “ Surinam ”. Considering that the original type series is probably composed of more than one species, a worker syntype from Jundiaí, São Paulo, is here designated lectotype in order to stabilize the taxonomy of the group. The name latitarsis   should be used only for the form occurring in the basin of the Paraná river, in Brazil ( Fig. 13 View FIGURE 13 ). The lectotype bears the following labels: “ Brasil / Jundiahy / 1899 / Schrottky” and “Zool. Mus. Berlin”. A third label was added: “ LECTOTYPE / Trigona latitarsis   / Friese, 1900 / desig. Melo & Costa, 2004 ”.

The lectotype is in almost perfect condition, except for lacking the pedicel and entire flagellum of the left antenna, the last six flagellomeres of the right antenna, and the last two tarsomeres of the left hind leg. The redescription presented below emphasizes the characters that proved useful in distinguishing the different forms within the latitarsis   group.


Worker lectotype. Body length: 3.7 mm; maximum head width: 1.75 mm; forewing length: 3.9 mm. Color: Integument predominantly black. Labrum and apical one­third of mandibles reddish brown. Basal one­fourth of frontal surface of scape and basal half of posterior surface light brown. Pronotal lobes dark brown. Legs dark brown, except for reddish brown basal one­fourth of hind tibia and basal joints of fore and mid tibiae, and for light brown last three tarsomeres. Terga reddish brown and sterna light brown. Tegulae, wing veins and pterostigma brown; wing membrane hyaline. Pubescence: Longest simple setae on upper frons with 0.10–0.12 mm in length; those on the scape with about 0.04 mm. Longest simple setae on disc of mesoscutum 0.12–0.14 mm long; short, plumose pubescence light brown and entirely finely branched. Simple setae on upper mesepisternum entirely white. Erect setae on posterior margin of T 2–5 brown, those on T 6 light brown to white; longest setae on mid portion of T 3 with 0.05–0.06 mm in length, on T 4 with 0.07– 0.08 mm, and on T 5 with 0.09–0.10 mm. Integumental surface: Predominantly smooth and shiny. Upper half of frons entirely finely microreticulate between setal punctures, reticulation stronger on upper frons and around ocelli; sockets of simple setae on upper frons and vertex distinctly raised and forming small bumps on the surface. Structure (measurements in mm): Head about 1.2 x wider than long (1.75: 1.42); proportion between upper (tangential to lower rim of mid ocellus), maximum and lower interorbital distances, 0.87: 1: 0.79 (1.04: 1.20: 0.95); clypeus 2.4 x wider than long (0.85: 0.35); scape, excluding radicle, about 6.1 x longer than its maximum width (0.67: 0.11); proportion between pedicel, 1 st and 2 nd flagellomeres, 1.3: 1: 1.3 (0.13: 0.1: 0.13); ocelo­orbital distance, in dorsal view, 0.56 x distance between posterior ocelli (0.2: 0.36). Hind basitarsus, in inner view, about 1.8 x longer than its maximum width (1.15: 0.65).

Additional material examined (all from DZUP)

Brazil, Minas Gerais: 6 workers, “ALPINOPOLIS ­ MG / Brasil / III ­ 1961 / C. Elias, leg.”; 5 workers, “UBERABA MG / Brasil / X ­ 61 / C. Elias leg.”; São Paulo: 1 worker, “ PORTO CABRAL / RIO PARANÁ / Travassos Filho c”, “ 15­30 /X/ 1941 ” and “ latitarsis   ”; 2 workers, “LENÇOIS­SP. / Brasil / iii­ 1939 / P. Pereira.”; 5 workers, “ SÃO PAULO / I­ 1945 / Guatapará.”; 1 worker, “Ribeirão Preto­SP / Brasil 20 /01/ 1987 / G. A. R. MELO ”; 3 workers, “ Brasil, São Paulo, / Teodoro Sampaio, / P. E. Morro do Diabo, / Estrada do Angelim, / 16.ii. 1999, GAR Melo”; Paraná: 2 workers, “Londrina PR / 0 3.5. 1996 / Dr. Ed. Proni”, “ Scaura latitarsis ( Friese, 1900)   / Pe J. S. Moure / 1996 ”; 4 workers, “Londrina, PR / 03.v. 1996 / Prof. E. Proni”.


Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure


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Scaura latitarsis (Friese)

Melo, Gabriel A. R. & Costa, Marco Antônio 2004

Trigona latitarsis

Friese 1900: 388