You must have a list of such prefixes somewhere, because many author names with lowercase prefixes get parsed properly. But here are a few that currently lead to parsing failures:
delle Chiaje
dos Santos
ten Broeke
ten Hove
Example name strings and gnparser CanonicalFull results:
Cellaria caulini delle Chiaje, 1841 > Cellaria caulini delle
Cellepora imperati delle Chiaje, 1841 > Cellepora imperati delle
Tremoctopus violaceus delle Chiaje, 1830 > Tremoctopus violaceus delle
Physophora mirabilis delle Chiaje, 1841 > Physophora mirabilis delle
Laevapex vazi dos Santos, 1989 > Laevapex vazi dos
Periclimenaeus aurae dos Santos, Calado & Araújo, 2008 > Periclimenaeus aurae dos
Acanthagrion egleri dos Santos, 1961 > Acanthagrion egleri dos
Aspidosiphon (Paraspidosiphon) fischeri ten Broeke, 1925 > Aspidosiphon fischeri ten
Hydroides bulbosa ten Hove, 1990 > Hydroides bulbosa ten
Laminatubus ten Hove & Zibrowius, 1986 > Laminatubus ten
Laminatubus alvini ten Hove & Zibrowius, 1986 > Laminatubus alvini ten
Protis hydrothermica ten Hove & Zibrowius, 1986 > Protis hydrothermica ten
Pseudovermilia conchata ten Hove, 1975 > Pseudovermilia conchata ten
Pseudovermilia fuscostriata ten Hove, 1975 > Pseudovermilia fuscostriata ten
Pseudovermilia holcopleura ten Hove, 1975 > Pseudovermilia holcopleura ten
Pseudovermilia madracicola ten Hove, 1989 > Pseudovermilia madracicola ten
Semivermilia ten Hove, 1975 > Semivermilia ten
Spirobranchus polycerus augeneri ten Hove, 1970 > Spirobranchus polycerus augeneri ten
You must have a list of such prefixes somewhere, because many author names with lowercase prefixes get parsed properly. But here are a few that currently lead to parsing failures:
delle Chiaje dos Santos ten Broeke ten Hove
Example name strings and gnparser CanonicalFull results:
Cellaria caulini delle Chiaje, 1841 > Cellaria caulini delle Cellepora imperati delle Chiaje, 1841 > Cellepora imperati delle Tremoctopus violaceus delle Chiaje, 1830 > Tremoctopus violaceus delle Physophora mirabilis delle Chiaje, 1841 > Physophora mirabilis delle Laevapex vazi dos Santos, 1989 > Laevapex vazi dos Periclimenaeus aurae dos Santos, Calado & Araújo, 2008 > Periclimenaeus aurae dos Acanthagrion egleri dos Santos, 1961 > Acanthagrion egleri dos Aspidosiphon (Paraspidosiphon) fischeri ten Broeke, 1925 > Aspidosiphon fischeri ten Hydroides bulbosa ten Hove, 1990 > Hydroides bulbosa ten Laminatubus ten Hove & Zibrowius, 1986 > Laminatubus ten Laminatubus alvini ten Hove & Zibrowius, 1986 > Laminatubus alvini ten Protis hydrothermica ten Hove & Zibrowius, 1986 > Protis hydrothermica ten Pseudovermilia conchata ten Hove, 1975 > Pseudovermilia conchata ten Pseudovermilia fuscostriata ten Hove, 1975 > Pseudovermilia fuscostriata ten Pseudovermilia holcopleura ten Hove, 1975 > Pseudovermilia holcopleura ten Pseudovermilia madracicola ten Hove, 1989 > Pseudovermilia madracicola ten Semivermilia ten Hove, 1975 > Semivermilia ten Spirobranchus polycerus augeneri ten Hove, 1970 > Spirobranchus polycerus augeneri ten