There seems to me to be an amazing variation between individuals, even within the same locality, from strong unh ocelli to none at all, as well as variation in colouration - in fact there were few that I would describe as chestnut. The male has a darker unf and smaller unh white markings. The books usually say that glycerion can be identified by the series of unh post-discal spots with brilliant white pupils.

observations

a very dark male, with an appealing deep chestnut colouring.

another strongly chestnut coloured male, with a large ocellus in s6 c.f. 21713's three small ocelli and nothing in s6.

a paler male, with not a hint of an ocellus. It is the form bertolis.

this rather strange specimen has a very strong chestnut colouring especially on the unf and the unh marginal band, with no white unh post-discal mark, and no ocellus at all in s1 or s5. I am rather surprised to find glycerion as strongly coloured as this (and 7261 is the most orange specimen I have seen) at such high altitude.

a typical example of the altitude form bertolis with no ocelli.

a female, which only know because I saw it in flight and the orange forewings of the female were clearly visible. A mid-chestnut colour and a significant ocellus in s6 and a vestigial one in s2.