Nannotrigona

Rasmussen, Claus & Gonzalez, Victor H., 2017, The neotropical stingless bee genus Nannotrigona Cockerell (Hymenoptera: Apidae: Meliponini): An illustrated key, notes on the types, and designation of lectotypes, Zootaxa 4299 (2), pp. 191-220 : 195

publication ID

https://doi.org/ 10.11646/zootaxa.4299.2.2

publication LSID

lsid:zoobank.org:pub:C320AAF8-1057-432A-B4D7-1CCC6D2B5BB7

DOI

https://doi.org/10.5281/zenodo.6021731

persistent identifier

https://treatment.plazi.org/id/03EC87DD-830D-9D51-FF1D-46B9FB722B7F

treatment provided by

Plazi

scientific name

Nannotrigona
status

 

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

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Apidae

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