Rhegmatorhina
reg-ma-TOH-ri-nuh
Genus
The cleft-nosed one; a bird with a fissured or grooved nasal region
Literally: break-nose / cleft-nosed
| Part | Meaning | Language | Note |
|---|---|---|---|
| Rhegmat- | a break, crack, cleft, fissure (nominative rhegma; genitive/oblique stem rhegmat-) | Greek (rheg, =ma, -n) | Greek neuter -ma nouns form their oblique stem by adding -t-; here rhegma → rhegmat- before the connecting vowel, following the standard -ma / -matos paradigm |
| -o- | connecting vowel standard in Greek compounds | ||
| -rhina | a nose | Greek (rhin, -o) | Used as a terminal element in bird-genus names to denote a distinctive nasal or bill feature. The alternative rhin, =a (Greek: 'a shark; a file, rasp') is also in the dictionary, but the 'nose' reading is overwhelmingly preferred for Thamnophilid bird genera |
A pure Greek compound: the oblique stem of the noun rhegma ('cleft') serves as the first element, joined by the connecting vowel -o- to the combining form -rhina ('nose'). The whole word is treated as a Latin feminine noun in apposition (genus names are uninominal). The name alludes to the deeply grooved or slit-like nostrils characteristic of these antbirds (family Thamnophilidae).
Pronunciation
- reg-ma-TOH-ri-nuh Five syllables: rheg | ma | to | rhi | na. Penult 'rhi' has a short vowel (i) followed by only one consonant (n), so penult stress is not triggered. Stress falls on the antepenult 'to'. The antepenult vowel 'o' is followed by one consonant (rh, a single sound) and then two vowels (i + a), the first being i — satisfying the long-antepenult rule, giving a long 'oh'. Initial Rh: the h is silent, R is voiced.
Other readings
A minority reading would take -rhina from rhin, =a ('a shark; a file, rasp'), giving 'break-rasp' or 'fissure-file'; this is morphologically possible but biologically implausible for a bird genus.
The initial Rh- follows Greek orthographic convention for the letter rho (ρ); the h carries no sound in English pronunciation. The oblique stem rhegmat- is not listed as a separate headword in the dictionary, but follows directly from the attested entry rheg, =ma, -n (i.e. the genitive stem is rhegmat-, exactly as in standard Greek -ma nouns such as soma/somat-, pragma/pragmat-, etc.). The genus Rhegmatorhina Ridgway, 1909 comprises five species of obligate ant-following antbirds in South America; the name refers to the distinctive deep groove (cleft) running along the nasal area of the bill. The dictionary contains two homographic rhin- entries: (1) rhin, =a — 'a shark; a file, rasp'; (2) rhin, -o — 'a nose'. Entry (2) is the intended root here.