| Hemileuca rubridorsa Felder, 1874 |
| Hemileuca sororia (Edwards, 1881) |
| Hemileuca stonei Lemaire, 1993 |
| Hemileuca tricolor (Packard, 1872) |
| Hemileucinae Grote & Robinson, 1866 |
| Hemileucini Grote & Robinson, 1866 |
| Hyalophora Duncan & Westwood, 1841 |
| Hyalophora cecropia (Linnaeus, 1758) |
| Hyalophora columbia (J. E. Smith, 1797) |
| Hyalophora columbia subsp. gloveri (Strecker, 1872) |
| Hyalophora euryalus (Boisduval, 1855) |
| Hyalophora euryalus subsp. cedrosensis (Cockerell, 1914) |
| Hyalophora euryalus subsp. euryalus (Boisduval, 1855) |
| Hylesia Hübner, 1820 [1816] |
| Hylesia acuta Druce, 1886 |
| Hylesia alinda Druce, 1886 |
| Hylesia coinopus Dyar, 1913 |
| Hylesia colimatifex Dyar, 1926 |
| Hylesia continua (Walker, 1865) |
| Hylesia cressida Dyar, 1973 |