If anyone was still doubting our identification of striped tesseras as the vanishing-striped, reduced head-patterned, little-or-no lateral stripe pheno, my suspected tessera male came through: his girlfriend's modest clutch produced 2/8 definite tesseras.
The breeding was (presumed) Tessera Stripe het Blood, Pied 66% Hypo x Hypo Pied Blood. I deliberately chose a female without motley or stripe to avoid confusion and produce plain ol' tesseras.
Though I showed him earlier in the thread, for clarity, here is the male's hatchling shot again. Then a shot of his (very cloudy) progeny: a Pied(?) Bloodred Tessera on top, and a Hypo Tessera below.
I was intrigued by this post, so I asked him for a picture of the male now that he's an adult, and asked if the female had been bred to other tesseras in the past. This was the reply:
Here ya go. He's completely patternless at this point. His belly is uncheckered (like a regular stripe's), though 9/10ths of his ventral scales have a dark orange wash.
And about whether the female had been bred before:
Good question, but no. This was her first year breeding, and I've had her since she was a hatchling (so no previous owners could have bred her before she came to me). Also, the father is the only male tessera I own that's larger than 40g, so there's no chance another male somehow ended up with her by accident.
So... all in all it seems like tessera stripes look different than what we thought. In the rest of the thread you can read more about the phenomenon (you need to be logged in to see the pictures). People speculate that what we *thought* were tessera stripes (with the strong line all the way to the tail, black outlines around the stripe and no side pattern), are in fact tessera motley/stripes. I guess we'll have to wait for more instances where this is proven out, and maybe the motley/striped tesseras will have to be proven as motley, but that might mean there will have to be some changes in the morph guide.
I hope to contribute to this myself as I hatched two extremely similar female hatchlings last year. They were sold, but I have another clutch in the incubator from the same couple. I'm hoping to hatch a male to test this with myself.