18 May I went to Tay Thien in the Tam Dao mountain range. It was a very hot afternoon and really quite productive. On the way back, between the little shrine in the valley at the foot of the big climb to the temple and the monastery, I noticed a damsel sitting on a twig by the path that in general proportion and cloud reminded me of Devadatta ducatrix, but that species has black wingtips and this one did not. It also had a blue face and in hand the appendages were like Bayadera. It was only later in the year and with the help of Toan that I could settle the ID: Bayadera bidentata. An interesting species with its pruinosity. Although I first thought it was B. nephelopennis, that species has different appendages. The inferiors for instance are quite a bit longer. B. bidentata had been reported from Tam Dao by Karube (1994).
|In hand, blackish thorax with pruinosity obscuring yellow lines, black abdomen, blue face|
|Close-up of blue face|
|Vaguely smoked brownish wings|