SPHENOPHRYNE - American Museum of Natural History
SPHENOPHRYNE - American Museum of Natural History
SPHENOPHRYNE - American Museum of Natural History
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
2000 ZWEIFEL: PARTITION OF <strong>SPHENOPHRYNE</strong><br />
105<br />
Fig. 62. Changes <strong>of</strong> proportions relative to body size in five species, key numbers as in fig. 61.<br />
(Oxydactyla stenodactyla lacks digital discs.)<br />
variable: in one specimen (fig. 65P) there is<br />
merely an angle in the anterior arm; another<br />
has a short, broad- based, pointed arm; and<br />
a third has a longer narrow arm. Wandolleck<br />
(1911: fig. 6) illustrated a moderately long<br />
branch. Similarly, my specimen <strong>of</strong> Liophryne<br />
schlaginhaufeni lacks a prenasal branch, but<br />
Wandolleck (1911: fig. 15) shows the vomer<br />
with such a branch.<br />
The vomers figured range from relatively<br />
massive to rather spindly, and they vary<br />
greatly in detail. That <strong>of</strong> Sphenophryne cor-<br />
nuta (fig. 65P) stands out for its broad prenasal<br />
arm. The medial plate is large and the<br />
lateral arm relatively thick in L. rhododactyla,<br />
L. dentata, and L. schlaginhaufeni (fig.<br />
65F–H). Jagged toothlike structures are present<br />
on L. allisoni (fig. 65E) and S. cornuta<br />
(fig. 65P), and A. palmipes bears a single or<br />
double downward- directed spike (fig. 65O).<br />
Some <strong>of</strong> these and other similarities may derive<br />
from closeness <strong>of</strong> relationship, but given<br />
the paucity <strong>of</strong> information on individual variation<br />
(see remarks above on S. cornuta and