Nepogomphus walli - again

Last year I was bumped into several freshly emerged Nepogomphus walli specimens when checking the slopes on the south side of Pia Oac mountain on 23 June and again on 8 July. I was happy that this year I found an immature male to the northwest of the mountain, but also in Cao Bang Province, about 60km from the previous location, on June 18.

Nepogomphus walli, immature male, showing the typical white superior appendages with swollen base and black tips.