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標題: [Larva/Pupa] Erebidae, Arctiinae - Schistophleps bipuncta [lichen moth pupa]
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發表於 2012-5-31 22:05  資料 短消息 
Erebidae, Arctiinae - Schistophleps bipuncta [lichen moth pupa]

actually this looks nothing like the Lithosiini pupae pictures I've seen onine....
e.g. http://blog.xuite.net/ne63/blog/59447319,     http://tw.myblog.yahoo.com/kming-blog/article?mid=19391

but I've read on some Taiwanese blogs that lichen moth larvae have a habit of building a sort of protective 'cage' from the hairs on their own body before becoming pupae

wondering if this is in any way similar?

preview picture (click to see bigger photo)


sorry for the quality

taken on 31 May 2012, Chai Wan

[ 本帖最後由 moviesorientate 於 2012-5-31 22:07 編輯 ]

[ Last edited by  hkmoths at 2012-6-8 18:47 ]
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發表於 2012-6-1 15:27  資料 文集 短消息 
looks closer to Perina nuda - any Ficus trees nearby?




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發表於 2012-6-3 22:53  資料 短消息 
回覆 #2 hkmoths 的帖子

hi Mr Kendrick, sorry for this late response   I went to the site again today to check... there're several F. rumphii trees and a row of F. benjamina trees.
Also recall having seen a lot of Perina nuda and Orvasca subnotata caterpillars at that exact spot (literally, hundreds of them.)

I've checked the photos of the pupal case of Perina nuda available on this forum, but I can't help feeling they look a bit different from the one I photoed - the forum photos show a sort of 'web' that seems to be constructed by silky thread over the pupal case and I can't see any pictures showing long hairs surround the pupa, as similar to this particular one shown in my picture.

Erm... is it just that my photo happens to show a freshly formed pupal case where the hairs from the larva's body are still sticking around after the last moulting? Do the hairs fall off after a while?

Do the surrounding hairs have any role in protection of the pupal case? (like these of lichen moth caterpillars?)
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發表於 2012-6-4 13:54  資料 文集 短消息 
only one way to find out - tkae the pupa home and await the eclosion of the adult.  Looking at the larger photo, I agree with your observation, not right for P. nuda,  The remains of the larval skin plus all the long setae suggest Arctiinae rather than Lymantiinae, so your original though of Lithosiini may well be correct.  Your are probably right about protection by the setae.

cheers,  Roger.




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發表於 2012-6-4 15:28  資料 短消息 
I'd have taken it home, but the pupa's actually attached to the bannister, not a removable twig or leaf... I have no idea how to take it away without injury to the pupa?
I'll try to keep up frequent observations to see if I can catch any one of them at eclosion (5 days since I took the pic, should be around time right?) And I'll look nearby to see if any similar pupa can be found on twigs or leaves...

[ 本帖最後由 moviesorientate 於 2012-6-4 15:31 編輯 ]
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發表於 2012-6-4 21:26  資料 短消息 
the adults (?)

went back to the site today and found two adults, each resting 2-3 cm away from one of these pupal cases. The two pupal cases were about 1 m apart and appeared to be partly transparent and empty.

because the two adults look exactly similar and because of the proximity, I'm taking a guess that these are the newly emerged adults... and not moths of another species randomly resting at the same spot

so I took some pics - these are 2 different individuals

They seem to be Erebidae, Arctiinae, Lithosiini - Schistophleps bipuncta?

[ 本帖最後由 moviesorientate 於 2012-6-4 22:52 編輯 ]


圖片: indivA-1.JPG (2012-6-4 21:26, 92.94 K)



圖片: indivB-1.JPG (2012-6-4 21:26, 89.52 K)


本帖最近評分記錄
hkmoths   2012-6-5 23:16  種子  +20   well done!
nadia   2012-6-4 22:10  種子  +10   讚 Like !!
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發表於 2012-6-4 21:36  資料 短消息 
the adults (?) lying beside the pupal cases

previews linked to bigger pictures

   

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發表於 2012-6-4 21:39  資料 短消息 
pupal cases



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發表於 2012-6-4 22:14  資料 文集 短消息 
回覆 #6 moviesorientate 的帖子

I'm pretty sure I saw the pupal case before but I could not find any picture record in my own photo collection.  It is highly probably that the pupa case belongs to your Schistophleps bipuncta.  Well done with the recording.
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發表於 2012-6-4 23:02  資料 短消息 
回覆 #9 nadia 的帖子

thanks nadia ) your comment is reassuring
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發表於 2012-6-5 23:15  資料 文集 短消息 
I agree that the pupa is almost certailny asociated with the moths in your photos. Nadia has identified the species correctly. Its higher classification is currently Erebidae, Arctiinae, Lithosiinae subtribe Nudariina). This species is common in HK, and has been recorded throughout the SAR.

There is only one larval host record on the HOSTS database . . .http://www.nhm.ac.uk/research-cu ... s/search/index.dsml
so your pupal photo is very likely a unique record (unless someone in Taiwan has documented this!). There is a photo by Kitching & Rawlins (in Kristensen ed., 1999)... http://books.google.com.hk/books ... %20pupa&f=false, but very little else.




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發表於 2012-6-6 00:23  資料 短消息 
thanks Mr Kendrick for all the info and literature links
glad to know the ID's correct (actually I made it when I posted the pictures XD) anyways, very happy to have contributed even just a little (?) to the study of this species in HK... now I'm motivated to record the whole life cycle of this moth   (that actually doesn't sound overambitious)
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發表於 2012-6-8 18:43  資料 文集 短消息 
Reply #12 moviesorientate's post

one down, two thousand plus still to go!!!




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