Supplemental data to Fig.2 and Fig.6.xlsx

In a Batesian mimic butterfly Papilio polytes, mimetic
females resemble an unpalatable model, Pachliopta aristolochiae, but exhibit
a different color pattern from non-mimetic females and males. In particular,
the pale-yellow region on hindwings, which correspondingly sends important　putative signals for mimicry and mate preference, is different in
shape and chemical features between non-mimetic and mimetic morphs. Recently,
we found that tmimetic type doublesex (dsx (H)) causes mimetic
traits; however, the control of dimorphic pale-yellow colors remains unclear.
Here, we revealed that dsx (H) switched the pale-yellow colors from
UV-excited fluorescent type (non-mimetic) to UV-reflecting type (mimetic), by
repressing the papiliochrome II synthesis genes and nano-structural changes in
wing scales. Photo-receptor reactivities showed that some birds and butterflies
could effectively recognize mimetic and non-mimetic pale-yellow colors,
suggesting that a genetic switch in the UV response of pale-yellow colors may
play essential roles in establishing the dimorphic female-limited Batesian
mimicry.