Key to species of Termitozophilus Silvestri

1. Inner and outer paratergites of abdominal segments IV–VII free (Figs. 27A–E).................................... 2

- Inner and outer paratergites of abdominal segments IV–VII fused............................................... 5

2. Head subquadrate; four bristles on vertex distributed as two pairs close to each other on anterior region right before the eye (see figs. 27–28, 55–57 in Zilberman (2019)); inner and outer paratergites of abdominal segment III partially fused; outer paratergites of segments III–VII partially fused to sternites (Figs. 27A–E); associated with Cornitermes pugnax .............................................................................................. T. mirandus (Mann)

- Head elongate; four to six bristles on vertex (Figs. 5A, 15A, 21A), if four, one pair on anterior region right before the eye and other on posterior region far from the eye; inner and outer paratergites of abdominal segment III free; outer paratergites of segments III–VII not fused to sternites (Figs. 27A–E); associated with Cornitermes pilosus or Cornitermes spp. (other than C. pugnax)............................................................................................ 3

3. Head with vertex bearing six bristles (Fig. 11A)........................................... T. parapilosus sp. nov.

- Head with vertex bearing four bristles (Figs. 5A; 15A; 21A)................................................... 4

4. Tergite VIII with four bristles along posterior margin (Fig. 6G); sternite VIII with two bristles along posterior margin (Fig. 6H); associated with Cornitermes species other than C. pilosus ...................................... T. favachoi sp. nov.

- Tergite VIII with six bristles along posterior margin (Fig. 12G); sternite VIII with four bristles along posterior margin (Fig. 12H); associated with Cornitermes pilosus ................................................... T. pilosus sp. nov.

5. Paratergites fused to tergites; abdomen barely physogastric, with almost no membranous area exposed (see figs. 29–36 in Zilberman, 2019); associated with Cornitermes silvestrii ...................................... T. belleae Zilberman

- Paratergites fused to sternites; abdomen remarkable physogastric, with large membranous area exposed; associated with Cornitermes species other than C. silvestrii ................................................................ 6

6. Color dark brown (Figs. 19–20); antennomeres V–X almost moniliform; pores on sternites III–VII distributed in circular clusters; associated with Cornitermes pilosus ................................................ T. tenebrus sp. nov.

- Color light brown (see figs. 1—5 in Zilberman, 2019); antennomeres V—X filiform (see figs. 58—60 in Zilberman, 2019); pores on sternites III—VII scattered; associated with Cornitermes bequaerti, C. cumulans, C. incisus, C. snyderi, and possibly C. villosus ............................................................................. T. laetus Silvestri