Hi every one. Just wondering if any one has gotten dark tan and brown pupa when rearing Buckeyes? The tan color is mainly on wing pads, abdomen and thorax. The dark brown (nearly black) is on head, front triangle (legs, antenna) and cremaster. I think I got some weird color mutation here. Just wondering if some one has had a Buckeye hatch from a pupa of this color? I know that Buckeye genes are quite changeable so I am excitedly waiting the emergence of the dark pupa butterflies.
Buckeye pupa are not known to overwinter. But that sure is a good point for a color change in other species that do over winter. Also the Common Buckeye dos not have different seasonal forms. Cold or difference in day length can affect a change in pattern and color such as in a form called Rosa. My larva were all reared at the same day length and warm temperature.
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That sure is a dark pupa! A lot darker than mine were. My larva were all kept at the same light level. None were darker than others. So none should have turned dark even though some did. Mine also lacked all pale markings that are normally seen on a pupa like the one on the right in the photo. Instead they had a rusty color through out with some dark brown hear and there. All visible pale markings become Rusty in three days after larva shed.