A New Species of Oryzomys (Rodentia: Muridae) from Eastern Bolivia Author EMMONS, LOUISE H. Author PATTON, JAMES L. text American Museum Novitates 2005 2005-07-25 3478 1 1 27 http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1206%2F0003-0082(2005)478%5B0001%3AANSOOR%5D2.0.CO%3B2 journal article 310250 10.1206/0003-0082(2005)478[0001:ANSOOR]2.0.CO;2 d1a49267-6e91-4f83-87d9-b3ea9e693924 0003-0082 5382998
TABLE 7 Summary of Distinguishing Characters Among Members of the megacephalus Group
Character aO. acritusO. megacephalusO. perenensisO. laticeps
TABLE 7 Summary of Distinguishing Characters Among Members of the megacephalus Group
a Pelage characters can vary with regional temperature (length) and age (color), as well as geographically.
Overall body sizemediumsmallmediumlarge
Dorsal colorwarm tonedwarm toneddark browndark brown
Ventral colorwhitishwhitishgraywhitish or cream
Length dorsal hair, mm9–105–65–78–10
Length chest hair, mm3–42–32–34
Lateral colororange tonesorange–tonesyellow­brownbrown
Dorsal rostrum colorduskybeigeduskydusky
Inner ankle colorwhitishwhitishgraygray
Hypothenar padlargetiny dotmediummedium
1st interdigital padlargesmallmediummedium
Interdigital tuberclesinconspicuousinconspicuousinconspicuousprominent
Rings on 1st digit pes12–321–3
Preauricular tuftpresentpresentpresentabsent
Lower m2 fossettidpresentpresentabsentabsent