On the list as given by Do et al. (2011) there are several species that were already present on the list of Bui, but judging from the photos in his photographic guide some of these are misidentifications. (Copera marginipes is clearly C. vittata, Cratilla lineata is Potamarcha congener, supposed Cratilla metallica looks to be Lathrecista asiatica, Ceriagrion auranticum looks to be C. calamineum, and Euphaea ochracea appears to be E. pahyapi.) Do et al. moreover suppose that the weird thoracic markings of Coeliccia yamasakii in Bui indicate a species novum, but I consider these immature examples of typical C. yamasakii. The unidentified Prodasineura is very similar to P. verticalis from southern Thailand and for the moment I treat it as such. This is not to diminish the value of their pioneering work. They did much to map the beauty of the Odonate fauna of Phu Quoc, which is under severe threat from the break-neck speed of the development of the island. Waterways are getting polluted and depleted, wetlands drained and build-up. Clearly environmental considerations are not keeping up with the urge to make a quick buck.
I will over the next days publish photos of some of the species found. Here I limit myself to my list of Phu Quoc and photos of wonderful Rhinagrion viridatum, a highlight of the trip. This species was recorded as Rhinagrion mima, but Kalkman & Villanueva (2011) already pointed out that the inclusion of R. viridatum in R. mima should be revised and R. viridatum given full species status.
|The first of 7 males of beautiful Rhinagrion viridatum|
|Another male of the same smashing species|
Ictinigomphus decoratus meleanops
Tramea transmarina euryale*
* Refers to species first recorded on the island, although some are very common
** Coeliccia kazukoae had already been found by Floris Brekelmans, but is not rare. Prodasineura verticalis had been recorded as Prodasineura sp. Copera vittata had been misidentified previously (as C. marginipes), but is a very common species.
*** Refers to species recorded for the first time for Vietnam (as far as I know)
**** Refers to a species recorded for the first time for Vietnam, but misidentified in previous surveys.