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Post by another specialist on Jun 6, 2005 15:08:45 GMT
Vangulifer neophasis
Olson & James 1991
Holocene of e Maui, e Hawaiian Islands
Primary materials: Holotype: maxilla
Secondary materials: Paratpyes: maxillae
Storrs L. Olson & Helen F. James,
Descriptions of thirty-two new species of birds from the Hawaiian Islands: Part II. Passeriformes
Ornithological Monographs 46 (1991)
The American Ornithologists' Union, Washington D.C.
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Post by Melanie on Jun 6, 2005 22:01:22 GMT
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Post by another specialist on Nov 8, 2005 7:54:24 GMT
commonly called the Thin-billed Finch
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Post by another specialist on Jul 22, 2006 10:13:01 GMT
Vangulifer neophasis, new species
(Figs. 26A-C, 27A, C)
"two new thin-billed drepanidine species" (part), James et al., 1987:2353.
Holotype: Slightly damaged maxilla, USNM 447061 (Fig. 26A-C). Collected
10 June 1988 by H. F. James.
Type locality: Puu Naio Cave (305 m), Maul, Hawaiian Islands.
Distribution: East Matfl: Puu Naio Cave, Lua Lepo, and Puu Makua Cave.
Etymology: Greek, neos, new, plus phasis, appearance, look; from the novel
appearance of the bill. The name is a feminine noun in apposition.
Measurements (mm) ofholotype: Dorsal length, 19.6; ventral length, 10.7; length
from lateral comer of nasofrontal hinge, 19.8; length from jugal articulation, 16.5;
length from anterior rim of narial opening, 7.7; ventral width, 7.6; length of narial
opening, 7.7; height of narial opening, 3.8; height through lateral nasal bar, 7.2;
minimum width of dorsal nasal bar, 1.2.
Paratypes: Puu Naio Cave: maxilla lacking the left nasal bar, USNM 445809;
mandible lacking the posterior half of the right ramus, USNM 445813 (Fig.
27A, C).
Puu Makua Cave: Three damaged maxillae, USNM 445810, 445811, and
445812.
Measurements (mm) ofparatypes: Maxillae (in the order listed above): dorsal
length, 20.8+, 20.6+, --, --; ventral length, 11.5, 11.8, --, --; length from lateral
comer of nasofrontal hinge, 20.8, 20.7, --, --; length from jugal articulation, 17.3,
17.1, , ; length from anterior rim of narial opening, 10.9, 10.6, --, --; maximum
width, 7.5, 8.0, --, 7.3; length of narial opening, 7.7, 6.9, 7.7, 7.6; height
of narial opening, 4.2, 3.7, 4.0, 3.7; height through lateral nasal bar, 7.8+, 7.7+,
--, 8.0+; minimum width of dorsal nasal bar, 1.2, 1.2, 1.2, 1.0,
Mandible (approximately 2 mm should be added to length measurements to
compensate for the damaged tip): total length, 29.6+; length of tomial crest,
16.1 +; symphysis length, 9.8 +; greatest width of symphysis, 6.8; symphysis height,
2.6; width of articular end with roedial process, 4.4; height at lateral cotyla, 1.8;
height at angle of mandible, 2.9; length of ramus (middle part), 11.8.
Diagnosis: Compared to V. mirandus, the maxilla is straighter and deeper, the
narial openings are larger, the entire ventral surface of the maxilla is much more
excavated, and the tomial crests are not flared outward towards the jugal articulations.
The ventral surface of the maxilla is less distinctly pitted anteromedially,
and the splaying of the roedial groove is less pronounced. The mandibular articulation
is relatively large and has a longer retroarticular process compared to V.
mirandus. While the retroarticular process exhibits individual variation in depth,
it is shorter and sturdier than in Loxops, Himatione, Vestiaria, Palmeria, Drepanis,
or Ciridops.
This is a medium-sized drepanidine, the mandibular ramus posterior to the
tomial crest be'rag comparable in length to Palmeria dolei.
Remarks: The differences between V. neophasis and V. mirandus are great
enough that these species might have been described as separate genera. The
shared characters that influenced our decision to unite them are the blunt bill,
splayed roedial groove, and short retroarticular processes, combined with a delicate,
elongate bill. |
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Post by another specialist on Jul 22, 2006 10:13:20 GMT
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Post by another specialist on Jul 22, 2006 10:13:36 GMT
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Post by another specialist on Jul 22, 2006 10:13:56 GMT
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