| Species | Name Used in Reference |
|---|---|
| Letharchus aliculatus McCosker, 1974 | Letharchus aliculatus (p. 626-628) |
| Letharchus rosenblatti McCosker, 1974 | Letharchus rosenblatti (p. 625-626) |
| Letharchus velifer Goode & Bean, 1882 | Letharchus velifer (p. 624-625) |
| Paraletharchus opercularis (Myers & Wade, 1941) | Paraletharchus opercularis (p. 622-623) |
| Paraletharchus pacificus (Osburn & Nichols, 1916) | Paraletharchus pacificus (p. 621-622) |