| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Theriophila miara | Hering, 1932 | species | Accepted | ||
| Thermesia apistis | Plötz, 1880 | species | Accepted | ||
| Thermesia clarilinea | Mabille, 1900 | species | Accepted | ||
| Thermesia junctilinea | Mabille, 1900 | species | Accepted | ||
| Thermochrous exigua | Talbot, 1932 | species | Accepted | ||
| Thermochrous fumicincta | Hampson, 1910 | species | Accepted | ||
| Thermochrous marginata | Talbot, 1929 | species | Accepted | ||
| Thermochrous melanoneura | Hampson, 1920 | species | Accepted | ||
| Thermochrous neurophaea | Hering, 1928 | species | Accepted | ||
| Thermochrous stenocraspis | Hampson, 1910 | species | Accepted | ||
| Thermochrous succisa | Hering, 1937 | species | Accepted | ||
| Therpsicora polygraphella | (Joannis, 1927) | species | Accepted | ||
| Therpsicora stictoglaucella | (Hampson, 1930) | species | Synonym | ||
| Thetidia ochrella | (Strand, 1909) | species | Accepted | ||
| Thetidia undulilinea | (Warren, 1905) | species | Accepted | ||
| Thevitella alphalis | Viette, 1958 | species | Accepted | ||
| Thiacidas acronictoides | (Berio, 1950) | species | Accepted | ||
| Thiacidas albescens | (Gaede, 1939) | species | Synonym | ||
| Thiacidas albicans | (Berio, 1954) | species | Misapplied | ||
| Thiacidas alboporphyrea | (Pagenstecher, 1907) | species | Accepted | ||
| Thiacidas berenice | (Fawcett, 1916) | species | Accepted | ||
| Thiacidas callipona | (Bethune-Baker, 1911) | species | Accepted | ||
| Thiacidas canemarmorea | (Hacker, 2004) | species | Synonym | ||
| Thiacidas cerurodes | (Hampson, 1916) | species | Accepted | ||
| Thiacidas cerurodes adnanensis | (Wiltshire, 1980) | subspecies | Accepted |