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Ictinogomphus acutus male (1) is finally an Ictinogomphus that does not pose any identification problems; it should be remembered that this is not the case elsewhere in Asia, where Ictinogomphus decoratus (present in Borneo), rapax (here in Thailand) and pertinax (here in Vietnam) pose a problem and are awaiting revision, because many of us now think that they constitute […]

Coeliccia nigrohamata male is part of a genus of Platycnemididae that currently includes 80 members in Asia, including 15 in Borneo, all endemic. Nine species were described in Asia in 2020, and others will certainly be added to the list.It immediately made me think of C. octogesima, which I encountered in 2013 in Peninsular Malaysia, for

Tyriobapta torrida male (1) is part of a genus that includes only three species, all present in Borneo. They are very similar in general appearance and thoracic patterns of young individuals, but are easily differentiated by the extent of the basal wing coloration, that of Tyriobapta torrida being by far the most important, that of

Coeliccia flavostriata male is part of a genus in the Platycnemididae family that currently includes 80 members in Asia, including 15 in Borneo, all endemic. Nine species were described in Asia in 2020, which suggests that more will likely be added to the list. We encountered them at the beginning of our stay, in rather

We only encountered Archibasis melanocyana male (Coenagrionidae) on the Maludam River, in the national park of the same name. It is a river whose height varies greatly with the tide, the sea is very close. This river winds through an impenetrable Pandanus forest, which after several kilometers becomes a real flooded forest with peaty soil.