Viceroy or Red-spotted Purple chrysalis?

seedmoneyOctober 20, 2010

Greetings,

I grow three species of willow: Salix caroliniana, Salix babylonica and Salix matsudana 'Tortuosa'. I find these chrysalises on them frequently. Can't decide if they belong to a Viceroy or a Red-spotted Purple. Which species do you think it is, and why?

To make this interesting, both species have been recorded on the Outer Banks of North Carolina, where I live. Thanks for your input.

Here is a link that might be useful: Viceroy or Red-spotted Purple?

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bandjzmom(7 NWGeorgia)

They are so similar that I just can't tell them apart, but your picture is awesome!~~Angie

    Bookmark   October 21, 2010 at 6:40AM
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ladobe

Now thatâÂÂs a great picture that shows a lot of detail. Good job.

Even so your pupa could be Limenitis arthemis astyanax, Limenitis archippus archippus or even Limenitis arthemis arthemis.

While some lepidopterists' in locations where multiple species overlap think they may have enough long term experience with possible local species clines (and so their variations) to do so, as Angie suggested, in these species it's very hard to impossible to determine species/subspecies in the pupal stage.

An example... A very serious, over the top lepidopterist I was associated with 20-25 years ago spent many years studying a specific vast area in the west where the recorded ranges of several Limenitis species/subspecies did or could over lap. As well as for many other specifics, the research included determining if the species/subspecies could be identified from the larval and pupal stages. End result I believe was yes from larval stage (at least to species level), but only maybe from the pupal stage. ItâÂÂs been a long time since I read his paper written from the study, but if I remember right the Limenitis species recorded in the location he studied included at least:
L. astyanax arizonensis (others referred to this bug as L. arthemis arizonensis)
L. archippus obsoleta
L. archippus lahontani
L. weidemeyerii latifacia
L. weidemeyerii angustifacia
L. weidemeyerii nevadae
L. lorquini lorquini
L. lorquini burrisonii

HTH,
L.

    Bookmark   October 21, 2010 at 3:12PM
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