How do i sex and breed hyla cinerea

[clownbarb1]

as above

[ZachTurner]

Well.. Only males can call and have nuptial pads.
As far as Breeding goes its really unlikely in a terrarium but more possible in a greenhouse if a pool with plants is provided.

The males’ mating call is a loud “quack” which is done repeatedly (from far away it sounds like a cow bell). The calls are first heard in March and mating occurs from April-August (a little later in the northern parts of their range). They call just before dusk.
The male grips the female by the armpits (an axillary amplexus) during mating. The female will lay up to 1000 black/brownish and white/cream colored eggs in small clumps of 1-1.5 inches in diameter. They are laid at or near the surface of the water and are attached to floating vegetation.