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FIGURE 9 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 9. Karyotype of D. altimontanus from Campos do Itatiaia, Itatiaia, RJ, 2450m (MN 69712, male) in conventional staining

FIGURE 4 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 4. (a) Mandibles of (top to bottom) Delomys sp. nov. (MN69712, Campos do Itatiaia, Itatiaia, RJ, 2450m), D. dorsalis (MN78927, Maromba, Itatiaia, RJ, 1170m), the holotype of D. dorsalis collinus (BMNH14.2.23.12, Itatiaia, RJ, 1470m) and D. sublineatus (MN78674, Caucaia do Alto, SP, 930m). (b) Variation in the contact of the frontoparietal and frontosquamosal sutures of (top to bottom) Delomys sp. nov., D. dorsalis, the holotype of D. dorsalis collinus and D. sublineatus. Arrow points to the anterodorsal limit of squamosal. (c) Lateral view of skulls of (top to bottom) Delomys sp. nov., D. dorsalis, D. dorsalis collinus and D. sublineatus (MVZ183076, Estação Ecológica de Boracéia, SP, 935m). Abbreviations: ang—angular process, cor—coronoid process, fro—frontal, par—parietal, sig—sigmoid notch, squ—squamosal.

FIGURE 12 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 12. (a) Disjunct distribution of D. altimontanus and (b) statistical parsimony network depicting relationships between cytochrome b haplotypes from Caparaó (locality 6) and Itatiaia (localities 18, 21) mountain ranges. Circle sizes are proportional to haplotype frequencies and each line represents one mutational step. (c) Vector correlations among characters and CVA axes and (d) bivariate plot of most discriminant craniometric characters between Itatiaia and Caparaó populations.

FIGURE 8 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 8. Craniometric discrimination among species of Delomys: (a) CVA analysis among samples with karyotypic and/or molecular data, and (b) respective vector correlations among characters and CVA axes. (c) CVA analysis with sympatric samples of Delomys sp. nov. and D. dorsalis from Itatiaia Mt. highlighted, showing the allocation of the D. d. collinus holotype. (d) Bivariate plot of most discriminant craniometric characters to discriminate between Delomys sp. nov. and D. dorsalis with the measurements of D. d. collinus holotype included.

FIGURE 14 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 14. Craniometric discrimination among intraspecific clades of D. dorsalis: (a) CVA analysis among the three clades and (b) respective vector correlations among characters and CVA axes. Bivariate plot of the two most discriminant craniometric characters (c) between the Mantiqueira and Serra do Mar clades, and (d) between the Mantiqueira and Southern clades, also depicting the allocation of taxonomically important samples.

FIGURE 7 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 7. (a–c) Upper and (d─f) lower molar rows of D. altimontanus (MN69712, Campos do Itatiaia, Itatiaia, RJ, 2450m), D. dorsalis (MN60572, Brejo da Lapa, Itamonte, MG, 1843m) and the holotype of D. dorsalis collinus (BMNH14.2.23.12, Itatiaia, RJ, 1470m). Abbreviations: amf—anteromedian flexus, la—anterolabial conule, li—anterolingual conule, pf— protoflexus, pfd—protoflexid, pld—protolophid.

FIGURE 5 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 5. Dorsal and ventral views of skulls of (a) Delomys sp. nov. (MN69712, Campos do Itatiaia, Itatiaia, RJ, 2450m), (b) D. dorsalis (MN78927, Maromba, Itatiaia, RJ, 1170m), (c) D. dorsalis collinus (BMNH14.2.23.12, holotype, Itatiaia, RJ, 1470m) and D. sublineatus (MVZ183076, Estação Ecológica de Boracéia, SP, 935m). Abbreviations: mif—maxillary margin of incisive foramen, mpf—mesopterygoid fossa.

FIGURE 2 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 2. Collecting localities for specimens of Delomys sublineatus examined in this study. Acronyms refer to the Brazilian states of (ES) Espírito Santo, (MG) Minas Gerais, (RJ) Rio de Janeiro, (SP) São Paulo, (PR) Paraná, and (SC) Santa Catarina. All localities are listed in the Appendix.

FIGURE 11 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 11. Dorsal, ventral and lateral views of the skull of a specimen of D. altimontanus from Campos do Itatiaia, Itatiaia, RJ, 2450m (MN 69712, male).

FIGURE 10 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 10. Dorsal, lateral and ventral views of the skin of the holotype of D. altimontanus from Campos do Itatiaia, Itatiaia, RJ, 2450m (MN 69746, male).

FIGURE 3 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 3. Phylogenetic relationships of cytochrome b haplotypes of species of Delomys with their respective karyotypes and geographic distributions of clades identified in the phylogeny. Haplotypes in bold occur sympatrically at the type locality of D. d. collinus. Numbers next to nodes refer to their bootstrap support values and posterior probabilities estimated in the maximumlikelihood and Bayesian phylogenetic analyses.

FIGURE 1 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 1. Collecting localities for specimens of Delomys sp. nov. (triangles) and D. dorsalis (circles) examined in this study. Localities from Mt. Itatiaia are highlighted in the inset. Acronyms refer to the Brazilian states of (ES) Espírito Santo, (MG) Minas Gerais, (RJ) Rio de Janeiro, (SP) São Paulo, (PR) Paraná, (SC) Santa Catarina and (RS) Rio Grande do Sul, and to the Argentinean province of Misiones (MI). All localities are listed in the Appendix.

FIGURE 13 in An integrative appraisal of the diversification in the Atlantic forest genus Delomys (Rodentia: Cricetidae: Sigmodontinae) with the description of a new species

FIGURE 13. Distribution of (a) the intraspecific mitochondrial clades and (b) geographic variation in the number of mammae in Delomys dorsalis (white circles ─ 6 mammae; black circles ─ 8 mammae). The inset (c) shows the pectoral mammary pair variation mapped on the molecular phylogeny of Delomys.

FIGURE 10 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 10. Anterior portion of braincase in lateral view of A: Akodon diauarum n. sp. (MN 73906), B: A. paranaensis (MZUSP 29094), and C: A. montensis (UFMG 2695). Abbreviations: fps, frontoparietal suture; Fr, frontal; fss, frontosquamosal suture; lpp, lateral projection of the parietal; Pa, parietal; Sq, squamosal. Note that the frontosquamosal and the frontoparietal sutures are mostly colinear in A. montensis and A. paranaensis, but form an acute angle (approximate 90º) in Akodon diauarum n. sp., presenting an area of contact between the dorsal facet of frontal and squamosal (white arrow); and the lpp highly and moderately developed in Akodon diauarum n. sp. and A. paranaensis, respectively, but absent (or inconspicuous, when present) in A. montensis. Figures are not to scale to facilitate comparisons.

FIGURE 9 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 9. Selected anatomical features of the skull and mandible of Akodon diauarum n. sp. based on adult individuals (MZUSP 36029 [A-C, E-G, J], MZUSP 36038 [D], MCN-M 1382 [H], MN 73906 [I]): dorsal view: A) rostrum; B) interorbital region; C) braincase; ventral view: D) palatal region; F) posterior portion of the skull; lateral view: E) rostrum; G) posterior portion of the skull; ventrolateral (H) and lateral (I) views: of alisphenoid bone region; lateral view: J) mandible. Abbreviations are: ab, auditory bulla; als, alisphenoid strut; an, angular notch; ap, angular process; boc, basioccipital; bmf, buccinatormasticatory foramen; cap, capsular projection; cp, condyloid process; crp, coronoid process; Exo, exoccipital; foa, foramen ovale accessory; Fr, frontal; fs, frontal sinus; gp, gnathic process; if, incisive foramen; Ip, interparietal; la, lacrimal; lpp, lateral projection of the parietal; lr, lambdoidal ridge; mas, mastoid; Max, maxillary; mbt, trough for buccinator-masticatory branch of maxillary nerve; mf, mental foramen; ms, mesopterygoid fossa; Na, Nasal; nc, nasolacrimal capsule; Pa, parietal; Pal, palate; palc, posterior opening of the alisphenoid canal; pgf, postglenoid foramen; psp, posterior suspensory process of squamosal; Pre, premaxillae; pt, parapterygoid fossa; sag, squamosal-alisphenoid groove; sn, sigmoid notch; Sq, squamosal; ssf, subsquamosal fenestra; stf, stapedial foramen; szr, squamosal zygomatic root; tt, tegmen tympani; zn, zygomatic notch; zp, zygomatic plate. White-dotted lines indicate relative position of some anatomical features.

FIGURE 6 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 6. Upper and lower left molar tooth rows in occlusal view of Akodon n. sp. (MCN-M 3219—left, and MCN-M 1382—center), and A. cursor (MZUFV 2335 - right). Abbreviations: paraflexus (pf), metaflexus (mf) and mesoflexid (mfd).

FIGURE 3 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 3. Dorsal (A) and ventral (B) views of skin of Akodon n. sp. (left pair: MCN–M 1382, 1383), and A. cursor (right pair: MZUFV 1947, 2045).

FIGURE 7 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 7. Dorsal, ventral, and lateral views of skull and lateral view of mandible of holotype of Akodon diauarum n. sp. (MZUSP 29672). Scale bar: 10mm.

FIGURE 8 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 8. Fluid (alcohol) preserved specimen of Akodon diauarum n. sp. (MZUSP 36035) in ventral (A) and lateral view (B) of the head region, and plantar view of left hind foot (C) and manus (D). Abbreviations are: I–V, digits; 1–4, interdigital pads; h, hypothenar pad; t, thenar pad.

FIGURE 5 in A new species of Akodon Meyen, 1833 (Rodentia: Cricetidae) from dry forests of the Amazonia-Cerrado transition

FIGURE 5. Selected anatomical features of the skull of Akodon n. sp. (left) and A. cursor (right). A) rostral and palatal region in ventral view (MCN-M 1382, MZUFV 1947); B) rostral region in dorsal view (MN 73906, MZUFV 1947); C) alisphenoid bone region in lateral/oblique view (MCN-M 1382, MZUFV 1949); D) posterior region of braincase in lateral view (MN 73906, MZUFV 1947). Abbreviations are: Al, alisphenoid; Exo, exoccipital; if, incisive foramen; lpp, lateral projection of the parietal; ms, mesopterygoid fossa; nc, nasolacrimal capsule; Pa, parietal; Sq, squamosal; zn, zygomatic notch. White-dotted (A and B) indicate comparative alignments. Note the different shape of the squamosal-alisphenoid suture black lines in C) linear throughout most of its length in Akodon n. sp. and curved (frequently S-like) in A. cursor. Figures are out of scale in order to improve comparisons.