Two subspecies of _Lasiurus borealis_ have been reported from
Tamaulipas. One, _L. b. borealis_, is known only from Matamoros,
whereas the other, _L. b. teliotis_, is widely distributed in the
central and southern parts.
A young animal from Ciudad Victoria was captured inside a house. All
specimens taken in the Sierra de Tamaulipas were caught in mist nets,
in which _Centurio senex_, _Pteronotus parnelli_, and _Mormoops
megalophyla_ also were taken.
=Lasiurus borealis borealis= (Mueller)
1776. _Vespertilio borealis_ Mueller, Des Ritters Carl von
Linne ... vollstaendiges Natursystem ..., Suppl., p. 20, type
from New York.
1897. _Lasiurus borealis_, Miller, N. Amer. Fauna, 13:105,
October 16.
_Distribution in Tamaulipas._--Known only by two specimens
from Matamoros (Miller, 1897:108).
=Lasiurus borealis teliotis= (H. Allen)
1891. _Atalapha teliotis_ H. Allen, Proc. Amer. Philos.
Soc., 29:5, April 10, type from an unknown locality,
probably some part of California.
1897. _Lasiurus borealis teliotis_, Miller, N. Amer. Fauna,
13:110, October 16.
_Distribution in Tamaulipas._--Generally distributed in
higher parts of state.
Eight June-taken females, all lactating, from the Sierra de Tamaulipas
averaged 10.0 (8-12) grams; five males from there weighed 9.2 (8-10)
grams. According to Hall and Kelson (1959:188), males of this species
usually are more brightly colored than females but this phenomenon is
not evident in the Tamaulipan specimens. Males do, however, average
slightly smaller than females.
The name _Lasiurus borealis teliotis_ is employed following Handley
(1960:472); formerly _L. b. ornatus_ Hall was applied (Hall and Kelson,
1959:190) to bats here referred to as _teliotis_.
_Records of occurrence._--Specimens examined, 7: Cd.
Victoria, 1800 ft., 1; Sierra de Tamaulipas, 2 mi. S, 10 mi.
W Piedra, 1200 ft., 1; Sierra de Tamaulipas, 3 mi. S, 14 mi.
W Piedra, 1200 ft., 1; Sierra de Tamaulipas, 3 mi. S, 16 mi.
W Piedra, 1400 ft., 4.
=Lasiurus cinereus cinereus= (Palisot de Beauvois)