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Clements 6.8 and Latin grammar (1 Viewer)

SteveO43

Recovering Lister
I admit that it has been more than 50 years since I studied Latin - and Ms. Murphy would tell you that I was not her best student - however I am puzzled by the comment on Row 23821 of Clements 6.8.

"With the transfer of Chestnut-winged Babbler from the genus Stachyris to Cyanoderma, the spelling of the scientific name for this subspecies changes from fulviventris to fulviventre."

It sounds vaguely familiar, but what grammatical rule am I forgetting?
 
David & Gosselin 2013. Variable species-group names and their gender endings. Appendix 4 in H&M4.
Expected neuter and masculine endings of variable species-group names derived from their current feminine ending. ...
FEMININE ending: -is
expected NEUTER: -e
expected MASCULINE: -is
(with a few listed exceptions)
 
But it's possible to find some grammatical agreement errors in Clements 6.8 (compared with H&M4) e.g.: Pyrroglaux podarginus, Megaceryle maximus, Sappho sparganura, Falco araea, Orthopsittaca manilata, Laterallus spilonotus, Phaethornis aethopyga, Setopagis heterurus, maculosus, parvulus etc.
 
Gender endings in H&M4

David & Gosselin 2013. Variable species-group names and their gender endings. Appendix 4 in H&M4.

11 ambiguous names in H&M4:

Fregata aquila (variable) / Eutoxeres aquila aquila (-)

crassirostris (Chalcites, Cuculus, Eurystomus orientalis, Forpus xanthopterygius, Gallinula melanops, Larus, Nycticorax caledonicus, Pachyptila, Rallus longirostris, Reinwardtoena, Tetrao urogallus, Tyto delicatula, Vanellus (all variable) / Charadrius wilsonia (-)

Lorius garrulus garrulus (variable) / Coracias garrulus (-)

Ptilinopus viridis geelvinkianus (variable) / Megapodius geelvinkianus (-)

Chloroceryle inda chocoensis, Nyctibius aethereus chocoensis (variable) / Veniliornis chocoensis (-)

intermedius - all but one (variable) / Picoides villosus intermedius (-)

Branta hutchinsii leucopareia (variable) / Trugon terrestris leucopareia (-)

Eupetomena macroura (variable) / Dendrortyx macroura, Piyaya cayana macroura, Strix uralensis macroura, Trogon melanurus macroura, Zenaida macroura (-)

Scolopax mira (variable) / Eudromia formosa mira (-)

Celeus lugubris olrogi (variable) / Micrastur ruficollis olrogi (-)

Tinamus major zuliensis (variable) / Colaptes rivolii zuliensis (-)
 
11 ambiguous names in H&M4:

Fregata aquila (variable) / Eutoxeres aquila aquila (-)

crassirostris (Chalcites, Cuculus, Eurystomus orientalis, Forpus xanthopterygius, Gallinula melanops, Larus, Nycticorax caledonicus, Pachyptila, Rallus longirostris, Reinwardtoena, Tetrao urogallus, Tyto delicatula, Vanellus (all variable) / Charadrius wilsonia (-)

Lorius garrulus garrulus (variable) / Coracias garrulus (-)

Ptilinopus viridis geelvinkianus (variable) / Megapodius geelvinkianus (-)

Chloroceryle inda chocoensis, Nyctibius aethereus chocoensis (variable) / Veniliornis chocoensis (-)

intermedius - all but one (variable) / Picoides villosus intermedius (-)

Branta hutchinsii leucopareia (variable) / Trugon terrestris leucopareia (-)

Eupetomena macroura (variable) / Dendrortyx macroura, Piyaya cayana macroura, Strix uralensis macroura, Trogon melanurus macroura, Zenaida macroura (-)

Scolopax mira (variable) / Eudromia formosa mira (-)

Celeus lugubris olrogi (variable) / Micrastur ruficollis olrogi (-)

Tinamus major zuliensis (variable) / Colaptes rivolii zuliensis (-)

Thank you Peter. Here is the answer from Normand David:

Explaining what seems contradictory is sometimes correct. For example: the original macroura is invariable (Art. 31.2.3), but the original macrourus variable (Art. 31.2). In these difficult cases, always consider the original combination and refer to the classic dictionaries and the code.

crassirostris (Chalcites, Cuculus, Eurystomus orientalis, Forpus xanthopterygius, Gallinula melanops, Larus, Nycticorax caledonicus, Pachyptila, Rallus longirostris, Reinwardtoena, Tetrao urogallus, Tyto delicatula, Vanellus (all variable) / Charadrius wilsonia (-)
ND: This is very OK.

Lorius garrulus garrulus (variable) / Coracias garrulus (-)
ND: This is very OK.

Ptilinopus viridis geelvinkianus (variable) / Megapodius geelvinkianus (-)
ND: Yes, it must be geelvinkianus v

Chloroceryle inda chocoensis, Nyctibius aethereus chocoensis (variable) / Veniliornis chocoensis (-)
ND: Yes, it must be chocoensis v

intermedius - all but one (variable) / Picoides villosus intermedius (-)
ND: Yes, it must be intermedius v

Branta hutchinsii leucopareia (variable) / Trugon terrestris leucopareia (-)
ND: This is very OK.

Eupetomena macroura (variable) / Dendrortyx macroura, Piyaya cayana macroura, Strix uralensis macroura, Trogon melanurus macroura, Zenaida macroura (-)
ND: This is very OK.

Scolopax mira (variable) / Eudromia formosa mira (-)
ND: Yes, it must be mira v

Celeus lugubris olrogi (variable) / Micrastur ruficollis olrogi (-)
ND: Yes, it must be olrogi = delete v

Tinamus major zuliensis (variable) / Colaptes rivolii zuliensis (-)
ND: Yes, it must be zuliensis v
 
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