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Post by panzerman on Jan 2, 2012 13:44:05 GMT -8
papilio endemic too San Cristobal, Solomons John  Attachments:
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Post by timmsyrj on Jan 3, 2012 5:54:59 GMT -8
Nice specimens John but is this not Papilio Bridgei s.sp Tryoni from San Christobal, P.Erskinnei from Ugi Island ??
Rich
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Post by timmsyrj on Jan 3, 2012 6:03:27 GMT -8
My Bridgei Drawer, with a few Aegeus forms and Inopinatus and Weymeri, second row from the right and 2nd and 3rd specimens down are from Makira. Rich Attachments:
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Post by Deleted on Jan 3, 2012 6:24:39 GMT -8
wish I could get hold of a weymeri female, lovely stuff.
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Post by Adam Cotton on Jan 3, 2012 7:39:09 GMT -8
Papilio erskinei (note correct spelling) was described by Mathew in 1886, with type from Ugi. The type of tryoni Mathew, 1889 also came from Ugi. P. erskinei is found on both Ugi and San Cristobal.
Tennent, 1999 (Nachr. entomol. Ver. Apollo, N.F. 20 (2): 207-230) discussed these taxa in some detail, and concluded that erskinei is a good species, whereas tryoni is a male form of either erskinei or bridgei.
John's specimens are normal erskinei, tryoni lacks the well developed forewing band, just having a faint series of submarginal spots, largest near the tornus. P. erskinei is clearly closely related to bridgei, but the male genitalia are slightly different from bridgei and from tryoni. The male genitalia of tryoni are close to bridgei, but not identical.
Adam.
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Post by timmsyrj on Jan 5, 2012 1:04:52 GMT -8
Cheers Adam, would those 2 males of mine (2nd row from right, 2nd and 3rd specimens down, both from Makira) be Erskinei or Tryoni ??. Rich  |
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Post by Adam Cotton on Jan 5, 2012 9:14:52 GMT -8
Rich, Your 2 males are erskinei, and 'Makira' is the new name for San Cristobal Island, rather than a particular place or another island. I am attaching a photo of the type of tryoni (from Ugi) taken from Tennent (1999) which I referred to above. You can see the different appearance of tryoni clearly. P. erskinei appears to replace bridgei on San Cristobal and Ugi, where there is no ssp. of bridgei present, unless the exteremely rare tryoni is actually a ssp of bridgei. Tennent knows of only 2 males of tryoni in existence, the type and another male from Santa Isabel. Tennent also states that it is not possible to exclude the alternative that tryoni is a natural hybrid between bridgei or erskinei and woodfordi, which would explain its rarity. In my opinion, the rarity of tryoni and its presence on Santa Isabel adds to the likelihood that it is a hybrid rather than an individual form. Perhaps one day a fresh specimen will be obtained that can be used for comparative DNA analysis to confirm the identity of tryoni. Adam. Attachments:
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