Pseudohemisus granulosus Guibé, 1952

Scherz, Mark D., Schmidt, Luca, Crottini, Angelica, Miralles, Aurélien, Rakotoarison, Andolalao, Raselimanana, Achille P., Köhler, Jörn, Glaw, Frank & Vences, Miguel, 2021, Into the Chamber of Horrors: A proposal for the resolution of nomenclatural chaos in the Scaphiophryne calcarata complex (Anura: Microhylidae), with a new species-level phylogenetic hypothesis for Scaphiophryninae, Zootaxa 4938 (1), pp. 392-420 : 411

Pseudohemisus granulosus Guibé, 1952

Name-bearing type: Holotype MNHN 1953.238 , from “Grotte d’Andranoboka, baie Mahajamba, Nord Majunga” according to the original description ( Guibé 1952).

Morphology. The holotype of this nomen is an adult in a good state of preservation and clearly conforms to the definition of the species in the S. calcarata complex. The inner metatarsal tubercle is enlarged, a tarsal tubercle is present ( Fig. 9 ), a dorsolateral ridge runs along most of body, the dorsal skin is covered densely with very small tubercles. Measurements are given in Table 1.

Osteologically, the specimen is consistent with the other Pseudohemisus specimens examined here ( Fig. 10 , Supplementary Figs S2–S 3 ).

Assignment. Based on geographical provenance of the holotype and morphology (dorsolateral ridge along most of the body) this nomen can be confidently assigned to the northern lineage of S. obscura . We therefore consider Pseudohemisus granulosus Guibe, 1952 to be a junior synonym of Scaphiophryne obscura .

Figures

FIGURE 2. Haplotype networks based on DNA sequences of two nuclear genes, POMC (310 bp) and RAG-1 (788 bp) for species of Scaphiophryne and Paradoxophyla. Small black circles represent additional mutational steps between identified haplotypes. Colors of taxa correspond to those in Fig. 1.

FIGURE 3. Individuals in life of the three species of Scaphiophryne in the subgenus Pseudohemisus according to the classification proposed in the present paper: Scaphiophryne brevis from Ifaty (A–E), Kirindy (F–G) and Isalo (H); S. calcarata from Pic St. Louis near Tolagnaro (I–K), Ambalavao (L), Isalo (Ilakaka) (M–N), Sakaviro (O) and near Anja (P); S. obscura from Isalo (Q), Kirindy (R–V), Ankarafantsika (W), and Bongolava Plateau (X). Photos by F. Glaw, J. Lobon-Rovira, A. Miralles, G. M. Rosa, and M. Vences.

FIGURE 9. Photographs of the details of morphology of type specimens of the nomina in the genus Scaphiophryne (subgenus Pseudohemisus) except the holotype of S. brevis, showing feet (left column) and hands (middle column) in ventral view, and the head (right column) in lateral view.

FIGURE 10. Micro-CT scans of the name-bearing type specimens of nomina in the subgenus Scaphiophryne (Pseudohemisus) except the holotype of S. brevis: skulls in dorsal, ventral and lateral views.