Cyranotermes

Rocha, Mauricio M., Carrijo, Tiago F. & Cancello, Eliana M., 2012, An illustrated key to the soldiers of Cyranotermes Araujo with a new species from Amazonia (Isoptera: Termitidae: Nasutitermitinae), Zootaxa 3196, pp. 50-57 : 51

Key to the soldiers of Cyranotermes

1. Dorsal surface of the head with four sparse bristles, tip of the frontal tube with more than four bristles ( Figs. 2 A and 3A)............................................................................................... C. timuassu

- Dorsal surface of the head glabrous; only four bristles at tip of frontal tube........................................ 2

2. Ratio “length of frontal tube / length of head without frontal tube” greater than 1.2; head capsule elongated in dorsal view, with the lateral margins almost parallel ( Figs. 2 B and 3B).................................................... C. caete

- Ratio “length of frontal tube / length of head without frontal tube” equal or less than 1.0; head capsule rounded in dorsal view, lateral margins converging frontward...................................................................... 3

3. Maximum width of the head equal or larger than 0.80 mm; in profile, frontal tube aligned with the dorsal line of the head ( Figs. 2 C and 3C).................................................................................. C. glaber .

- Maximum width of the head less than 0.75 mm; in profile, a slight depression on the dorsal surface, just before frontal tube, which is thinner and slightly upturned (in relation to the dorsal surface of head) ( Figs. 2 D and 3D)....... C. karipuna sp. n.

Figures

FIGURE 2. Soldier head, in dorsal view: Cyranotermes timuassu (A); C. caete (B); C. glaber (C); C. karipuna n. sp. (D).