Key to species of Furcidentia

(modified after Zettel, 1990)

1 Clypeus with teeth (Fig. 5b)............................................................................. 2

- Clypeus without teeth (Fig. 2a)........................................................................... 3

2 Mescoscutum and mesoscutellum black; second tergite black; occipital area red; antenna with 38 antennomeres; 5.3 mm; Costa Rica.............................................................................. F. pulchra Zettel

- Mesoscutum with only a small black spot in the center; second tergite orange like the other tergites; occipital area with a black dot; antenna with more than 40 antennomeres; 5.2–5.4 mm; Ecuador................................ F. sharkeyi Zettel

3 Specimens larger than 5 mm; second metasomal tergite parallel sided, third tergite converge posteriorly, postero-lateral end blunt; 5.7–6.2 mm; Ecuador ................................................................ F. clypeata Zettel

- Specimens smaller than 3.0 mm; other characters variable..................................................... 4

4 Ratio length of wings to length of body larger than 0.9; ratio length of eye to length of temple larger than 3.0; 2.3 mm; Guatemala................................................................................ F. tikalensis sp. nov.

- Ratio length of wings to length of body smaller than 0.9; ratio length of eye to length of temple 2.0 or less............... 5

5 Ratio of width of clypeus to its height is 1.0; ratio of malar space to base of mandible 1.6; face (Fig. 1b), frons and vertex strigose; French Guiana.................................................................... F. jenningsi sp. nov.

- Ratio of width of clypeus to its height is 1.5; ratio of malar space to base of mandible 1.3; face (Fig. 2a), frons, and vertex rugose; Guatemala........................................................................ F. llama sp. nov.