I believe it's found in Guam and some other nearby small islands, which have no high elevation. Perhaps it can adapt to year-round warmth in some populations?
That could also be an explanation why it does well on Hawaii. Tyler et al (1994) state that the Hawaii population was imported in 1971 either from Japan or Guam. If the Guam population has evolved to be adapted to the warm weather and the Hawaii population originated from Guam, that might be why it has done so well on Hawaii.
Alternatively it could be a function of daylength rather than temperature, because I remember Tom Kral told me that Hawaii xuthus is continually summer form. He said it doesn't produce spring form specimens. If that's true that means it never actually goes into diapause there. Personally I find that rather doubtful, but I suppose it's possible.
The Lycaenidae Genus Arhopala is large and has some of the most colorful species of that family. Arhopala horsfieldii palawanica is a true forest species that is mostly found in inland localities. The species is mostly quite localized, but with its stunning green upperside, it is a real jewel to behold in sunny spots of the deep, dark rainforest. One of my personal favorites of the Palawan Lycaenidae.
This specimen is from Mt. Salakot, central Palawan, 9.viii.1997, 350 m. Collection of Natural History Museum, Copenhagen, Denmark
Post by skandinavisk on Sept 25, 2018 18:13:59 GMT
Thanks for sharing those most interesting specimens Wolf! Both are most interesting and also very local and rare. I never collected or observed Austrozephyrus reginae myself. Only saw specimens from local collectors, mostly coming from Mt. Gantung, which is east, north east of Mt. Mantalingahan
Wolf, the link you posted to your picture of your male Athyma speciosa is dead.... FYI.
Thanks Jan. I fixed the A.speciosa picture. I'm finally done taking pics and editing all the species from my trip in april last year. Those two spp pictured here i bought/got as a gift from my friend Noel in Mindoro. It would be awesome to see them in their habitat though I'm allready thinking about going back again, but i will have to wait for a couple of years more atleast.
Sorry for not having posted to this thread for a long time!
Euthalia djata is found in Thailand, peninsular Malaya, Langkawi, Borneo and in Palawan it is represented by the endemic subspecies Euthalia djata ludonia. In Palawan, this species is rather local and rare and mostly found in primary forest habitats. I have no experience on the early stages of this species, but quite likely the host plant is a species of mistletoe - Loranthaceae. Closely related species like E. lubentina and E. adonia are known to feed on Dendrophthoe.
This is a female I personally collected, now housed in the national collection of the Natural History Museum, Copenhagen, Denmark:
I quote : "Also, did you ever encounter the wonderful "gatherings" of T. trojana (males) at mineral springs? Were you ever able to actually collect any trojana for yourself? "
Trogonoptera trojana Honrath, 1886 is a butterfly protected by CITES. Moreover, in Palawan, butterfly collecting is prohibited and all wildlife is protected.
The following pictures (August, 2005) show: - the beach of Port Barton where trojana comes in the morning to pump salt water; the exact place where these males were photographed is on the extreme left of the photo, between the two boats stranded on the sand and the sea. - males in flight or mud-puddling on the beach; it will be noticed that one of these males does not hesitate to land where the ripples of the China Sea come to die. - A female in the garden of the lodge Greenviews Resort (lodge I highly recommend!). www.palawandg.clara.net/Port-Barton.html
1. The forest near the Pamoayan Falls. Biotope of Papilio (Menelaides) memnon lowii Druce, 1873 (common), and Lyssa zampa Butler, 1869 (very abundant). Palawan, August 17, 2005 2. An island off Port Barton. 3. The island of Cacnipa and the beach where I met (in the water) a beautiful specimen of Laticauda saintgironsi. 4. Vindula erota Fabricius, 1793, female, Island of Cacnipa, Palawan, August 16, 2005. Very common!
Thanks Jean-Marc for adding your text and pictures. Port Barton is indeed a very good place to see Trogonoptera trojana as well as many other nice species of butterflies. The small island on picture 2 is Paradise island.
trehopr1 , unlike Trogonoptera brookiana, T. trojana does not gather in groups, puddling. At best, you may see 2 or 3 males puddling some meters apart, but they never will rest then, as they are quite territorial. I previously posted a thread with a video on T. trojana on this forum. I also posted a thread based on my own experiences with T. trojana. You "liked" it back then I see. So yes, I did collect T. trojana myself. It is not hard at all to catch, as long as you place yourself in the right spot. Not only for this species, but any species, you need a collecting permit in the Philippines. This permit can not stand alone as collecting permits are only issued alongside a commercial breeding permit, which allow you to collect initial breeding stock for captive breeding for commercial purposes only. I probably do not need to underline that such permits are only issued to Philippine nationals!?
Arhopala are obviously everywhere in Palawan, but forested habitats is the best places to look for this Genus. I did post Arhopala horsfieldi palawanica earlier in this thread. I also posted some Arhopala in another thread. A pair of a most stunning Arhopala species will be posted in this thread soon.
Port Barton is still very underdeveloped as compared with many other places in Palawan and it is where one can still go to see the pre-tourism boom Palawan, aka real village life. This little YouTube video sums it up pretty well: