Table 5 in A new species of jupati, genus Metachirus Burmeister 1854 (Didelphimorphia, Didelphidae) for the Brazilian Amazon

Table 5: Summary of comparative diagnostic characters for the type species M. nudicaudatus, Metachirus aritanai new species, and M. myosuros (sensu present study).
CharactersMetachirus aritanai new speciesMetachirus nudicaudatusMetachirus myosurosDorsal colourationLight brown speckled with goldBrown speckled with black and light orangeOrange-brown to light brownVentral colourationPure creamYellowish-creamCream to yellowishLateral bodySlightly lighter than the dorsumOrange to brown, visibly lighter than the back,Yellowish with variations of lightcolourationexpressive presence of blackish and orange hairsgrey or light golden tonesSupraocular spotsUsually pure creamCream to slightly orange, especially around theUsually yellowish to creamcolourationedgesCheeks colourationUsually pure creamVaries from cream to orange-creamUsually yellowishLighter hairs behindYellowish and in small quantitiesRust colour and in large quantitiesDifferent tones of yellow that vary inthe base of the earsquantityTarsal hair colourationCreamBrownish orangeVariations of blackish to brown-greyish or golden hairsSkullWider, inflated and more robust (be-Narrower, lowered and more delicate (betweenNarrower, lowered and more deli-tween 15.79 and 16.91 mm)12.95 and 13.16 mm)cate (between 12.07 and 12.48 mm)RostrumWider and more robustNarrower and more delicateWider and more robustInterorbital crestsUsually absentDevelopedDevelopedPre-maxillary regionWider, short and pointedNarrower, long and roundedNarrower, long and usually pointedFrontal regionMore regular and rounded posteriorIrregular in the posterior portion, with a protuber-Usually irregular in the posteriorlimit, without the presence of a me-ance in the median regionportion, with a protuberance in thedian protuberancemedian regionLower molarsWide entoconidsSmall entoconidsSmall entoconidsAverage degree of8.20%8.20%14.60%molecular divergence(Cytb)Estimated time of3.3 mya (early Pliocene)3.3 mya (early Pliocene)3.5 mya (early Pliocene)molecular divergence(Cytb)GeographicXingu/Tocantins interfluve (Figure 1)Suriname,Guyana,French Guiana and the BrazilianAtlantic forest in eastern Brazil anddistributionportion of the Guiana shield,in the north of the Paráprobably northern Argentinaand Amapá States (Figure 1)(Figure 1)