Originally posted by nadia at 2007-2-27 15:06
For 'Euproctis' senso lato or any small yellowish tussock moth, dissection of genital is always necessary to confirm ID. If I call picture 3 in #1 Euproctis bipunctaptex (which indeed may be correct ...
Recent (and as yet unpublished) work using mitochondrial DNA analysis by Yen Shen Horn and some of his students has highlighted a large degree of polymorphism within species of the Nygmiini. This makes it essential to examine genitalia to determine to species. The practicality of this is limiting, and should only be done if there is a real need (be it for conservation, agriculture or silviculture). Sometimes we must accept that it will not be possible to obtain an identity to species level just from a photo.
I'll agree that there is a possibility that any one of the three photos could be of Arna bipunctapex
; though based on genitalia dis-sections undertaken on this group in HK so far by Tony Galsworthy, the ground colour of bipunctapex
has always been less orange-brown, more purple-brown, and the two apical dots of unequal size (the dot at the f/w apex being smaller), rather than of equal size, as in A. pseudoconspersa
and in the individuals in the photos posted by lamchoping.
On these points, I'll rephrase my initial "determination" and say probably Arna pseudoconspersa
(pending genitalia dis-section!).
[ Last edited by hkmoths at 2007-2-28 00:49