Musseromys inopinatus, Heaney & Balete & Rickart & Veluz & Jansa, 2014

Heaney, Lawrence R., Balete, Danilo S., Rickart, Eric A., Veluz, Maria Josefa & Jansa, Sharon A., 2014, Three New Species of Musseromys (Muridae, Rodentia), the Endemic Philippine Tree Mouse from Luzon Island, American Museum Novitates 2014 (3802), pp. 1-1 : 1-

Musseromys inopinatus , new species

Figures 2 , 3 , 4B, 5B, 6B, 7, 8; tables 2, 3

HOLOTYPE: FMNH 193839 . Adult male collected on 17 March 2007, field number D. S. Balete 4477. Fresh tissues were removed from the thigh and placed in DMSO buffer solution. The rest of the specimen was initially fixed in formalin, now preserved in ethyl alcohol with skull (fig. 6B) removed and cleaned, complete and in good condition. The

Figures

FIG. 2. Projection of specimen scores onto the first two axes (A) and the second and third axes (B) of a principal components analysis (table 1) of 18 craniodental variables (log-10 transformed) from seven specimens representing four putative species of Musseromys.

FIG. 3. The tree resulting from a maximum-likelihood analysis of the cytochrome b gene from Phloeomys Division species under the best-fitting model (GTR+I+Γ4). Numbers at nodes indicate maximum-likelihood (above the line) bootstrap support. Terminal taxa are identified by species name and a unique alphanumeric identifier (either FMNH catalog number or Genbank accession number). Trees are rooted with Rattus norvegicus (Genbank number X14848) and with three species of gerbil: Meriones unguiculatus (AF119264), Gerbillus nigeriae (AJ430555), and Gerbilliscus guineae (AJ430562) as outgroups (not shown). Black and gray branches indicate elevational range reconstructed using parsimony optimization (see Molecular Genetic Methods), where black and grey indicate lowland and montane distributions, respectively.