A New Montane Species of Spiny Pocket Mouse (Rodentia: Heteromyidae: Heteromys) from Northwestern Costa Rica Author Anderson, Robert P. Author Timm, Robert M. text American Museum Novitates 2006 2006-03-16 3509 1 1 39 http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1206%2F0003-0082(2006)3509%5B1%3AANMSOS%5D2.0.CO%3B2 journal article 3674 10.1206/0003-0082(2006)3509[1:ANMSOS]2.0.CO;2 2f8c7065-6e4b-46b1-89af-809f51afdcf2 0003-0082 4735318

TABLE 3 Descriptive Statistics for Adults in Age Class 4 of Heteromys oresterus in Central Costa Rica for External Measurements, Mass, Cranial Measurements, and Three Derived Ratios a

		El Copey de Dota (type
a Mean ± standard error, sample size, and observed range (minimum–maximum) are given for all available specimens and for specimens from the type locality (El Copey de Dota; see appendix 2). Units are millimeters unless otherwise noted.
	All specimens	locality)
Total length	339.9 ± 6.8, 7	343.5 ± 6.7, 6
	(311–357)	(311–357)
Head-and-body length	164.8 ± 5.3, 8	168.8 ± 6.1, 6
	(143–183)	(143–183)
Tail length	174.4 ± 1.9, 8	175.0 ± 2.0, 7
	(168–185)	(168–185)
Tail/head-and-body ratio, × 100 (%)	105.7 ± 3.8, 7	104.2 ± 4.1, 6
	(95.1–117.5)	(95.1–117.5)
Hind foot length	39.9 ± 0.2, 9	39.9 ± 0.3, 7
	(39–41)	(39–41)
Ear length	17.0 ± 0.6, 9	16.7 ± 0.7, 7
	(14–20)	(14–20)
Mass (grams)	74.0, 1	—
	(74)	(—)
Occipitonasal length	39.554 ± 0.364, 9	39.901 ± 0.368, 7
	(38.22–40.91)	(38.26–40.91)
Zygomatic breadth	17.597 ± 0.162, 4	17.735 ± 0.335, 2
	(17.37–18.07)	(17.40–18.07)
Rostral length	18.419 ± 0.224, 9	18.566 ± 0.252, 7
	(17.34–19.40)	(17.34–19.40)
Nasal length	16.222 ± 0.181, 9	16.381 ± 0.194, 7
	(15.65–16.97)	(15.65–16.97)
Least interorbital constriction	9.308 ± 0.159, 9	9.410 ± 0.184, 7
	(8.72–10.07)	(8.72–10.07)
Squamosal breadth	16.106 ± 0.087, 9	16.113 ± 0.112, 7
	(15.69–16.59)	(15.69–16.59)
Maxillary toothrow length	5.457 ± 0.070, 9	5.454 ± 0.065, 7
	(5.17–5.76)	(5.20–5.65)
Interparietal width	9.893 ± 0.194, 9	10.053 ± 0.184, 7
	(8.84–10.64)	(9.17–10.64)
Interparietal length	5.159 ± 0.150, 9	5.319 ± 0.138, 7
	(4.54–6.03)	(4.96–6.03)
Parietal breadth	13.887 ± 0.079, 9	13.847 ± 0.097, 7
	(13.47–14.17)	(13.47–14.17)
Skull depth	11.736 ± 0.092, 9	11.763 ± 0.107, 7
	(11.41–12.16)	(11.47–12.16)
Least interorbital constriction/	23.522 ± 0.240, 9	23.573 ± 0.298, 7
occipitonasal length ratio, × 100 (%)	22.436–24.615	22.436–24.615
Parietal breadth/	35.134 ± 0.407, 9	34.721 ± 0.395, 7
occipitonasal length ratio, × 100 (%)	33.120–36.609	33.120–35.883