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Post by wollastoni on Nov 13, 2020 1:01:03 GMT -8
People who collect them by purchasing may not know the VERY special behaviour of Cyrestis species.
Most of the time, they sit on the underside of leaves with they wings horizontaly spread (a little bit like Geometridae). A rather unique behavious for a Nymphalidae.
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Post by Paul K on Nov 13, 2020 8:47:11 GMT -8
I wouldn’t guess the genus of your specimen, so different from other “maps”.
Thanks for sharing Olivier.
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Post by Adam Cotton on Nov 13, 2020 9:34:20 GMT -8
Indeed, I wouldn't realise that C. biaka belongs to genus Cyrestis as it looks rather different.
Are there similar species elsewhere in the New Guinea area?
Adam.
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Post by trehopr1 on Nov 13, 2020 10:52:42 GMT -8
Dang Paul, your rainy season form of C. thyodamas is pretty much like mine !
Well, yours is I suppose a bit "darker" in its details.
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Post by wollastoni on Nov 13, 2020 11:20:53 GMT -8
Indeed, I wouldn't realise that C. biaka belongs to genus Cyrestis as it looks rather different. Are there similar species elsewhere in the New Guinea area? Adam. Yes Cyrestis acilia from New Guinea is very close to biaka. biaka was first considered as a ssp of acilia before getting its full species status. |
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Post by trehopr1 on Nov 13, 2020 11:21:20 GMT -8
Olivier, in looking up your specimen it seems that biaka is a subspecies name of the species Cyrestis acilia (Godart/1819).
Henk van Mastrigt (your dear friend) has a paper on its distribuition, subspecies, and forms (on the web)!
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Post by wollastoni on Nov 13, 2020 11:24:54 GMT -8
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Post by wollastoni on Nov 13, 2020 11:33:55 GMT -8
A short extract of van Mastrigt paper :
Discussion
The author agrees with Fruhstorfer's (1912: 589), statement that ssp. biaka
cannot be treated as a subspecies, but should be given specific rank and
herewith propose the formal combination: Cyrestes biaka Grose Smith, 1894,
stat. nov. The much more obvious subapical and subterminal rows of black
Description
Male - Upperside of forewing brown, with a post median (creamy) white band
from dark costa to inner margin, getter wider towards inner margin. Vein Ris
brown in white band. A subterminal band bordered by two pale lines with
seven orange brown bordered black quite oval spots, from costa to inner
margin, of which the third and fourth spots are narrow and elongate and the
last two spots much smaller and connected one to another. Inner brown part
bears some pale brown verticallines from costa to inner margin, some others
only till cubitus. Upperside of hind wing, with an irregular termen, with a sharp,
short tail at vein M3and a second, more rounded one at vein CuA2,continues
the pattern of the forewing. The (creamy) white band is getting narrower from
costa to inner margin and is ending in a large orange brown spot with to eyes.
The subterminal band has six much better developed spots, of which the first
one is smaller and the last one larger than the four others of more or lessthe
same size.
Underside of both wings have same pattern as on upperside; however, light
brown ground colour with much more obvious light parts which are grey to
white.
Female- As male, however lighter brown coloration, with a creamy postmedian
band. At the upperside of hindwing is the large spot at inner margin dirty
brown in stead of orange brown in males.
Length of forewing: 26-32 (av. 29.42) mm Derivation of name: 'kumambana'
is a adjective in apposition, derived from the Kumamba Archipelago, where
this subspecies occurs.
Suara Serangga Papua, 2010,5 (1)Juli - September 2010 9
spots with orange brown borders on the upperside of both wings and the
absence of the orange brown spot at the bottom of the white band, at the
inner margin are two important characteristics th at distinguish this species
from C acilia and others.
The presence of only 3-4 distinctly developed spots in the submarginal band
on the forewing, instead of six, characterizes all mainland populations and
those.frorn islands close to the mainland, such asWaigeu, Batanta, Mioswar,
Japen and PantaiTimur islands. However, individuals with lessdeveloped third
and fourth spots, even sometimes absent, are nearly all areas. Populations
with six weil developed spots are treated as separate (sub)species and found
on Numfor (C aeilia maforensis), Supiori and Biak (C biaka stat. nov.) and Moor
and Mambor islands (C aeilia moorensis subsp. nov.).
In summary, the following taxa of Cyrestisoccur in Papua province and adjacent
islands, Indonesia:
Cyrestis acilia (Godart, 1819), with
ssp.aeilia Godart, 1819, from Waigeu, Japen and mainland of Papua
ssp.miso/ensis Marten, 1903, from Misollsland
ssp.maforensis Marten, 1903,from Numfor Island
ssp.moorensis subsp. nov., from Moor and Mambor Islands
ssp.kumambana subsp. nov., from the Kumamba Archipelago
Cyrestis biaka Grose Smith, 1894, stat. nov., from the islands of Supiori and
Biak.
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Post by trehopr1 on Nov 13, 2020 11:43:33 GMT -8
Thank you for the update Olivier. That is a lovely specimen...
You see, just by posting your photo it made my "inquiring mind" want to find out more about it.
This is why its important folks post pic's of things; i.e. (share) what they have come across to advance discussions on topics.
You will always see pictures from me !
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Post by cabintom on Nov 13, 2020 11:46:19 GMT -8
Cyrestis camillus camillus (The only Afrotropical member of Cyrestinae)
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Post by trehopr1 on Nov 13, 2020 12:13:47 GMT -8
Dang, cabintom you beat me to the punch in posting a photo of that lovely African species. I've got two of those fellows from I think two different places in Africa.
Thanks for sharing those photos as you always take good ones !
I'm still going to post a picture of one of mine tonight or tomorrow as soon as I get a chance...
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Post by Adam Cotton on Nov 13, 2020 13:48:13 GMT -8
The African Cyrestis is stunning.
Adam.
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leptraps
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Posts: 2,397
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Post by leptraps on Nov 13, 2020 15:16:49 GMT -8
Cabin Tom:
Long time since I have seen a post from you. I assume you are still on the mission field.
If you are in Africa, are you still collecting butterflies??
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Post by Paul K on Nov 13, 2020 19:11:18 GMT -8
As Adam mentioned before in Thailand there is another closely related to Cyrestis genus Chersonesia.There are four species and I collected two of them. The butterflies are of smaller size. Chersonesia intermedia rahrioides
 Chersonesia risa risa
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Post by cabintom on Nov 13, 2020 20:38:37 GMT -8
Cabin Tom: Long time since I have seen a post from you. I assume you are still on the mission field. If you are in Africa, are you still collecting butterflies?? Yes, still in DRC. And still collecting... but in a very limited fashion. Severe insecurity in my province + Covid travel restrictions limited me to just two collecting trips since May 2019. Fortunately, both trips produced great results.
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