| Common name | Hardhead |
| Language | English |
| Type | Vernacular |
| Official trade name | No |
| Rank | 3 - (Other common name) |
| Country | United States (contiguous states) |
| Locality | |
| Ref. | Tomelleri, J.R. and M.E. Eberle, 1990 |
| Life stage | juveniles and adults |
| Sex | females and males |
| Core | morphology |
| 1st modifier | |
| 2nd modifier | |
| Remarks | 'Hardhead', i.e., blockhead, stubborn, willful (p. 553 in Ref. 11978). |