Cyrilliotermes

Constantino, Reginaldo & Carvalho, Sérgio H. C., 2012, A taxonomic revision of the Neotropical termite genus Cyrilliotermes Fontes (Isoptera, Termitidae, Syntermitinae), Zootaxa 3186, pp. 25-41 : 27

Key to the soldiers of Cyrilliotermes

1. Nasus broadly conical ( Fig. 5 A–B)................................................... C. crassinasus , new species

- Nasus subcylindrical (Figs. 2A–D, 3A–B, 8A–B, E)......................................................... 2

2. Right mandible with cutting edge between A and M1 much longer than the distance between M1 and M2; ( Fig. 9 A–B); nasus conspicuously upturned (Fig. 2A); sides of head capsule usually angular.............................. C. angulariceps

- Right mandible with cutting edge between A and M1 shorter than the distance between M1 and M2 ( Figs. 9 C–F); nasus oriented anteriorly or moderately upturned; sides of head capsule not angular............................................. 3

3. Cutting edge between A and M1 short and concave ( Fig. 9 E–F); apical teeth often rounded; head capsule elongate, usually with nearly straight lateral sides in dorsal view ( Fig. 8 B); nasus not upturned............................... C. strictinasus

- Cutting edge between A and M1 long and straight ( Fig. 9 C); apical teeth with sharp points; head capsule not elongate ( Fig. 3 B); nasus slightly upturned............................................................. C. brevidens , new species

Figures

FIGURES 3. Cyrilliotermes brevidens, sp. n. Soldier. A, head in profile; B, head in dorsal view; C, tip of frontal tube in profile. Worker. D, head in dorsal view; E, head in profile.

FIGURES 5. Cyrilliotermes crassinasus, sp. n. Soldier. A, head in profile; B, head and pronotum in dorsal view. Worker. C, head in dorsal view; D, head in profile.

FIGURES 8. Cyrilliotermes strictinasus. Soldier. A, head in profile; B, head in dorsal view; C, labrum; D, foreleg; E, tip of frontal tube. Worker. F,, head in profile; G, head in dorsal view.

FIGURES 9. Soldier mandibles. A – B, Cyrilliotermes angulariceps; C, C. brevidens, sp. n.; D, C. crassinasus, sp. n.; E – F, C. strictinasus.