Thomasomys (Pacheco, 2015)

Pacheco, Víctor & Ruelas, Dennisse, 2023, Systematic Revision Of Thomasomys Cinereus (Rodentia: Cricetidae: Sigmodontinae) From Northern Peru And Southern Ecuador, With Descriptions Of Three New Species, Bulletin of the American Museum of Natural History 2023 (461), pp. 1-73 : 44

Shallqa Thomasomys

Figures 6C , 8 , 9 , 10C , 11C, 11G , 12C , 13C , 14 ,

Figures

FIGURE 6. Living specimens of Thomasomys. A, T . cinereus (subsequently released) from La Libertad, El Fundo, Río Chuyuhual. B, T . lojapiuranus (MEPN 12549) from southern Loja, Ecuador. C, T . shallqukucha (MUSM 46882) from Lambayeque, Kañaris, Geomarca. D, T . pagaibambensis (MUSM 40358) from Cajamarca, La Granja, Quebrada Agua de la Montaña. Photos taken by Víctor Pacheco, except T . lojapiuranus that was taken by Pablo Moreno.

FIGURE 8. Dorsal pelage of species of Thomasomys from northern Peru and southern Ecuador. From left to right: T . cinereus (MUSM 46716), T . lojapiuranus (MUSM 23758), T . shallqukucha (MUSM 47230), and T . pagaibambensis (MUSM 40973).

FIGURE 9. Ventral pelage of species of Thomasomys from northern Peru and southern Ecuador. From left to right: T . cinereus (MUSM 46716), T . lojapiuranus (MUSM 23758), T . shallqukucha (MUSM 47230), and T . pagaibambensis (MUSM 40973).

FIGURE 10. Left feet of adult specimens of Thomasomys species treated in this report: A, T . cinereus (MUSM 38493); B, T . lojapiuranus (MUSM 23758); C, T . shallqukucha (MUSM 46882); D, T . pagaibambensis (MUSM 40965). Abbreviations: t, thenar; h, hypothenar.

FIGURE 11. Dorsal and ventral views of adult crania of Thomasomys species treated in this report: A, E, T . cinereus (MUSM 46716); B, F, T . lojapiuranus (MUSM 23758); C, G, T . shallqukucha (MUSM 46874); D, H, T . pagaibambensis (MUSM 39527). Scale bar = 10 mm.

FIGURE 12. Lateral views of adult crania and mandibles of Thomasomys species treated in this report:A, T . cinereus (MUSM 46 716); B, T . lojapiuranus (MUSM 23758); C, T . shallqukucha (MUSM 46874); D, T . pagaibambensis (MUSM 39527). Scale bar = 10 mm.

FIGURE 13. Dorsal view of the skull of adult male crania showing the zygomatic notch area. From left to right: Thomasomys cinereus (MUSM 46716), T . lojapiuranus (MUSM 23758), T . shallqukucha (MUSM 46874), and T . pagaibambensis (MUSM 39527). Abbreviation: zn, zygomatic notch.

FIGURE 14. Interparietal region of Thomasomys cinereus (MUSM 46716) and T . shallqukucha (MUSM 46874). Note the interparietal bone (ip) is longer anteroposteriorly in T . shallqukucha than in T . cinereus.