nthosticta_ is a member of the _Hyla pictipes_
group that contains _debilis_, _pictipes_, _rivularis_, and _tica_. From
all of these, _xanthosticta_ differs by having large yellow spots on the
flanks and thighs, a white labial stripe, and a large yellow spot on the
proximal ventral surface of each thigh. Females of _Hyla pictipes_ have
small creamy yellow spots on the flanks and thighs but have dark spots
on the venter; furthermore, _pictipes_ lacks white stripes on the upper
lip and above the anus, lacks a canthal stripe, and has larger discs and
less webbing on the hand. _Hyla tica_ differs from _xanthosticta_ by
having white mottling on the flanks, dark transverse bands on the limbs,
and larger discs, and lacks yellow spots on the thighs, and white
stripes on the upper lip, limbs, and above the anus. _Hyla rivularis_ is
notably different in having a tan dorsum and creamy yellow venter with
black flecks; moreover, _rivularis_ lacks spots on the flanks and thighs
and white stripes on the upper lip, limbs, and above the anus. Of all of
the species in the _pictipes_ group, _xanthosticta_ most closely
resembles _debilis_. This species has a dull green dorsum, usually
flecked with brown or black, and a creamy white venter. The flanks of
_debilis_ are creamy white with small brown flecks, and the anterior and
posterior surfaces of the thighs are bright yellow. _Hyla debilis_ has a
dull tan canthal stripe and white spots on the upper lip; the webbing on
the hand is slightly more extensive, and the discs are slightly larger,
in _debilis_ than in _xanthosticta_.

The presence of the large yellow spots on the flanks and thighs in
combination with the uniformly green dorsum and yellow venter
immediately distinguishes _Hyla xanthosticta_ from all other known
species of Middle American hylids.

_Remarks._--The only known specimen of _Hyla xanthosticta_ was perched
at night on a leaf about one meter above the ground. The frog was found
in humid upper montane forest characterized by large oaks supporting
many bromeliads and heavy growths of mosses. Two other members of the
_Hyla pictipes_ group--_pictipes_ and _rivularis_--were abundant along a
stream in the oak forest.

The specific name is derived from the Greek _xanthos_ meaning yellow and
the Greek _stiktos_ meaning spotted, and alludes to the diagnostic
yellow spots on the flanks and thighs.

Hyla pseudopuma infucata new subspecies

Plate 17

_Holotype._--Adult male, K