Nannotrigona
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publication ID |
https://doi.org/ 10.11646/zootaxa.4299.2.2 |
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publication LSID |
lsid:zoobank.org:pub:C320AAF8-1057-432A-B4D7-1CCC6D2B5BB7 |
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DOI |
https://doi.org/10.5281/zenodo.6021731 |
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persistent identifier |
https://treatment.plazi.org/id/03EC87DD-830D-9D51-FF1D-46B9FB722B7F |
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treatment provided by |
Plazi |
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scientific name |
Nannotrigona |
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Key to the species of Nannotrigona View in CoL (workers)
1. Mesoscutum sparsely punctate, shiny among punctures ( Fig. 2 View FIGURE 2 A, C); smaller species, head width <1.6 mm, mesoscutum width <1.3 mm ................................................................................( dutrae View in CoL group) 2
- Mesoscutum and mesoscutellum densely and coarsely foveate with depressions enclosed by ridgelike elevations, giving foveae a rugulose appearance ( Fig. 2 View FIGURE 2 B); larger species, head width> 1.6 mm, mesoscutum width> 1.3 mm ....................3
2(1). Omaulus rounded; clypeus and paraocular area distinctly pubescent ( Fig. 7 View FIGURE 7 B); posterior margin of mesoscutellum and outer surfaces of fore- and mesotibiae with long setae (> diameter of F3); head more than 1.2 times as broad as long.... N. schultzei
- Omaulus strongly carinate ( Fig. 2 View FIGURE 2 C); clypeus and paraocular area with smooth and largely glabrous areas ( Fig. 7 View FIGURE 7 A); posterior margin of mesoscutellum and outer surfaces of fore- and mesotibiae largely asetose; head less than 1.2 times as broad as long............................................................................................. N. dutrae
3(1). Base of antennal scape with long setae, at least as long as diameter of scape ( Fig. 2 View FIGURE 2 E).................. ( mellaria group) 4
- Base of antennal scape covered with appressed or erect setae, much shorter than diameter of scape ( Fig. 2 View FIGURE 2 D)................................................................................................( testaceicornis group) 7
4(3). Posterior margin of mesoscutellum with deep and semicircular emargination ( Fig. 3 View FIGURE 3 A); depth of emargination, as measured from an imaginary line between apices of teeth to its base, 1.2 times greater than diameter of F3; forewing length, including tegula, approximately 5.0 mm............................................................................5
- Posterior margin of mesoscutellum with shallower emargination ( Fig. 3 View FIGURE 3 B); depth of emargination at most 0.5 times diameter of F3; forewing length, including tegula, approximately 4.5 mm ...................................................6
5(4). Tessellation of T2 and T3 without glabrous intersections, giving the surface a matte appearance; mesoscutellum 1.5 times broader than long; legs brown or darker; maculations bright yellow, including on axillae, lateral border of mesoscutum, and apical teeth of mesoscutellum.................................................................... N. mellaria
- Tessellation of T2 and T3 with glabrous intersections, almost shiny; mesoscutellum less than 1.5 times broader than long; legs ferruginous; maculations reduced or faint yellow, including on axillae, lateral border of mesoscutum, and apical teeth of mesoscutellum................................................................................ N. tristella
6(4). Base of antennal scape with setae less than 1.3 times longer than the diameter of scape; flagellar segments usually testaceous........................................................................................... N. chapadana
- Base of antennal scape with longest setae at least 1.7 times longer than the diameter of scape; flagellar segments usually brown......................................................................................... N. melanocera
7(3). Ocellocular area, between lateral ocellus and inner margin of compound eye, with contiguous punctures similar to those on frons ( Fig. 3 View FIGURE 3 C); carina of pronotal lobe, in dorsal view, not projecting into an angle................................ 8
- Ocellocular area, between lateral ocellus and inner margin of compound eye, with scattered and larger punctures than on frons ( Fig. 3 View FIGURE 3 D); carina of pronotal lobe, in dorsal view, projecting into an angle.........................................9
8(7). Wing membrane, veins and pterostigma light reddish brown contrasting with wing apex dark grayish brown; posterior margin of mesoscutellum with deep, semicircular emargination, about 1.8 times broader than long............. N. camargoi n. sp.
- Wings brownish, veins and pterostigma dark brown; posterior margin of mesoscutellum with shallower emargination, about 3.8 times broader than long................................................................. N. perilampoides
9(7). Clypeus shiny, with minute shallow punctures ( Fig. 3 View FIGURE 3 F); antennal flagellum blackish to brownish.............. N. punctata
- Clypeus duller, with minute, coarse punctures ( Fig. 3 View FIGURE 3 E); antennal flagellum light reddish brown.......... N. testaceicornis Trigona dutrae Friese, 1901: 267 [lectotype: ZMHB; worker, Pará, Brazil] new lectotype designation
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.