Is this a One-eyed Sphinx?

A mysterious egg we found has hatched into what clearly appears to be a sphinx moth larvae. Could it be the One-eyed Sphinx (Smerinthus cerisyi​)?

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Yesterday we found a very large egg on Shasta Daisy (Leucanthemum × superbum) at the Eastside Permaculture Garden near Memorial Park in Albany. It was a mottled brown color when we found it and pretty oval and flat, with a thick shell similar to, say, the eggs of the Giant Silkmoths we have reared. However, there are no established Giant Silkmoth populations in Albany and it clearly wasn't a Polyphemus (Antheraea polyphemus) or Ceanothus Silkmoth (Hyalophora euryalus) egg anyway, especially because it wasn't laid in a cluster. So even though the egg did seem characteristic of a Saturniid, we thought that it was most likely some sort of sphinx moth.

As the egg reached the end of its development, it became a pearly white color because the shell became clear and the pale (whitish) caterpillar underneath was beginning to become exposed. When it finally hatched sometime this morning, we suppose that we had guessed correctly that it would be some kind of Sphingadae since it has the distinguishing horn on its last segment (think hornworms). The overall shape of the body was a pretty big giveaway too -- long and slender with no hair or tubercles. However, actually identifying the exact species can be difficult and our best guess is that we now possess a larvae of the One-eyed Sphinx (Smerinthus cerisyi), a fairly common sphinx moth who's range should extend to our region. Though daisies are not at all related to any of the host plants listed for S. cerisyi, the daisy that it was laid on was growing directly underneath a willow (Salix), so perhaps the moth intended to lay it on that instead which would make much more sense since it and a number of other species eat willow. 

We shall see for sure once our little guy grows a little bigger, but for now the descriptions and identification pictures of the first instar caterpillar sure do match what we have. But until then. . .

UPDATE: The caterpillars has accepted the willow leaf we put in its petri dish. 

- Brian