2021 SIMMONS ET AL.: NEW SPECIES OF MYOTIS 7 
(1971), Smithers (1983), Koopman (1994), Taylor (2000), Monadjem et al. (2010), and Csorba 
et al. (2014). Dental homology nomenclature for premolars follows that of Csorba et al. (2014): 
Ist upper premolar (P2), 2nd or middle upper premolar (P3); 3rd upper premolar (P4), Ist 
lower premolar (p2), 2nd or middle lower premolar (p3), and 3rd lower premolar (p4). All 
measurements reported herein are from adult individuals with closed epiphyses. The first five 
measurements listed below were taken from skin labels or other records made by the original 
collector unless otherwise noted; all other measurements were taken by us using digital calipers 
and were recorded to the nearest 0.01 mm, Linear measurements are given in millimeters 
(mm), and weights are reported in grams (g). Descriptive statistics (mean and observed range) 
were calculated for all samples. Measurements are defined as follows: 
Mass (M): Body weight in grams. 
Total length (TL): Distance from the tip of the snout to the tip of the last caudal vertebra. 
Length of tail (LT): Measured from the point of dorsal flexure of the tail with the sacrum 
to the tip of the last caudal vertebra. 
Hind-foot length (HF): Measured from the anterior edge of the base of the calcar to the 
tip of the claw of the longest toe. 
Ear length (Ear): Measured from the ear notch to the fleshy tip of the pinna. 
Forearm length (FA): Distance from the elbow (tip of the olecranon process) to the wrist 
(including the carpals). This measurement is made with the wing at least partially 
folded. 
Greatest length of skull (GLS): Distance from the posteriormost point on the occiput to 
the anteriormost point on the premaxilla (excluding the incisors). 
Condyloincisive length (CIL): Distance between a line connecting the posteriormost mar- 
gins of the occipital condyles and the anteriormost point on the upper incisors. 
Condylobasal length (CBL): Distance between a line connecting the posteriormost margins 
of the occipital condyles and the anteriormost point on the skull not including the 
upper incisors. 
Postorbital breadth (POB): Breadth across the narrowest portion of the postorbital region. 
Braincase breadth (BB): Greatest breadth of the globular part of the braincase, excluding 
mastoid and paraoccipital processes. 
Mastoid breadth (MB): Greatest breadth across the mastoid processes. 
Zygomatic hreadth (ZB): Greatest breadth across the zygomatic processes. 
Maxillary toothrow length (MTRL): Distance from the anteriormost surface of the upper 
canine to the posteriormost surface of the crown of M3. 
Breadth across molars (BM): Greatest breadth across the outer margins of the upper molar 
teeth. 
Breadth across canines (BC): Greatest breadth across the outer margins of the upper 
canines. 
