Grotea

Key of the Grotea View in CoL View at ENA species present in Argentina (females)

1 Gena with ventroposterior angle without tooth or process ( Fig. 4a View FIGURE 4 ).............................................. 2

- Gena with ventroposterior angle forming a conspicuous tooth or process where occipital and hypostomal carinae meet ( Fig. 1c View FIGURE 1 )................................................................................................ 3

2 Head with clypeus and supraclypeal area yellow. Flagellum dark-brown with flagellomeres 25–39 white ( Fig. 4b View FIGURE 4 ). Body yellow with some dark-brown to black regions..................................................... G. gayi (Spinola) View in CoL

- Head with clypeus and supraclypeal area black, except for a small yellow spot on laterally. Flagellum entirely dark-brown to black. Body black with some small white lines or spots......................................... G. cortesi (Porter) View in CoL

3 Propodeum with anterior transverse carina absent, area basalis open posteriorly ( Fig. 1d View FIGURE 1 ).................. G. coca n. sp

- Propodeum with anterior transverse carina present, area basalis closed posteriorly ( Fig. 4c–d View FIGURE 4 )........................ 4

4 Area basalis of propodeum triangular (anteriorly wide and posteriorly narrow) ( Fig. 4c View FIGURE 4 ), anterior transverse carina absent medially; basal area brown, followed by a transverse brown line, rest of propodeum contrasting yellow................................................................................................. G. delicator (Thunberg) View in CoL

- Area basalis of propodeum not triangular, anterior transverse carina present and forming a soft arc from side to side ( Fig 4d View FIGURE 4 ); propodeum white with black bands and yellow medially...................................................... 5

5 Body slender, predominantly yellow with reduced black regions. Postgenal process laterally indistinct, forming a tooth horizontally oriented to center of head ( Fig. 4e View FIGURE 4 ). Flagellum mostly black dorsally and yellow ventrally, flagellomeres 23–30 white. Genae completely yellow......................................................... G. eburnea (Porter) View in CoL

- Body robust, predominantly black with reduced yellow regions. Postgenal process distinct laterally, forming a vertically oriented tooth. Flagellum mostly black dorsally and yellow ventrally, flagellomeres 23–39 white. Gena mostly yellow, partially black above................................................................. G. superba (Schmiedeknecht) View in CoL