146: Gynacantha saltatrix (Martin, 1909)

Number: 146 / Family: Aeschnidae / Genus: Gynacantha

Species:  Gynacantha saltatrix / Little Dusk Hawker

Habitat: Heavily Tree-lined Ponds

Province(s) sighted: Chaiyaphum, Khon Kaen, Udon Thani

In flight: July-November / Sightings (by me): Uncommon

Species Easily Confused with: All Gynacantha Species

I was busily teaching yesterday (03/07/12) when there was suddenly a commotion. One of my students had picked up a dead dragonfly and was scaring her friend. I looked at it from a distance and thought it was Gynacantha subinterrupta, as they are fairly common in Khon Kaen. Then I noticed the whitish section on the caudal appendages. I thought it could have been Gynacantha phaeomeria as I have seen this species once before, but in Loei province. I grabbed it from the kids before it was destroyed and then taught them about dragonflies for a while. When I looked closely I could see that it was a new species for me, even though it was headless. The claspers are much slimmer (not paddle-like) than both other Gynacantha species I have come across before. 

Since my initial ID of G. bayadera, I have been corrected by Mapor. He thinks it is Gynacantha saltatrix. And looking at www.iucnredlist.org it states about G. saltatrix: "It is a crepuscular species which frequents marshes and does not require forest." 

This would make sense as there isn't much in the way of forest in Khon Kaen city!
Since this time, I have found a new location where there seems to be a number of specimens present. 

The Male

The male looks like many others in the Gynacantha genus. However, its caudal appendages differ. Also, the markings along the abdomen are slightly different to those of Gynacantha subinterrupta.

This male I managed to capture with my fingers ... good way of showing his small size.

The Female

The female is very similar to the male.

Another younger female I saw outside my house recently.

G. saltatrix male appendages

... compared to G. subinterrupta (it's rather different) ...

The female appendages

Many, many thanks to Mapor for correcting my initial ID!

122: Epophthalmia v. vittata Burmeister, 1829

Number: 122 / Family: Macromiidae / Genus: Epophthalmia

Species: Epophthalmia v. vittata / Spotted Torrent Hawk

Habitat: Lowland ponds/Slow-moving Streams

Province(s) sighted: Khon Kaen

In flight: June-October  / Sightings (by me): Fairly Common

Species easily confused with: All Epophthalmia Species

Who says you need lots and lots of patience to capture photos of dragonflies? Try cycling around the country roads and you may get a nice suprise. I did anyway. About 10 kms outside Khon Kaen, along a quiet country road, I cycled past a large, dead dragonfly, probably hit by a car. I stopped and picked it up. Unsure of the species, I carefully placed it into a small pouch I have under the seat where I normally keep my phone and cycled another 20 kms before returning home. Fortunately, it survived the journey and I was able to get good photos of it, before the ants moved in and left just a pair of wings! I searched the Internet and thought it was Epophthalmia frontalis frontalis, which was later confirmed as correct by Noppadon Makbun. Since then, I have spotted 2 more specimens (2 males and 1 female in total). Maybe they are more common that I thought in Khon Kaen, but rarely seen as they reside high up in the trees.

The male
Here is one of the males 'in situ'. Well, he is totally dead, but I just wanted his to look a little bit more natural and I think this is how they rest.

... and back to the better-for-science shots.

Wing venation 

This photo shows the distinctive hyaline wings with slight yellow colouration to the base of the hind wings.

Caudal appendages

Views of the terminal segments which also help with identification.

 Lateral view ...

Lateral view (from a slightly single angle) ...

Dorsal view ...

Basal view ...

The female

I have finaly managed to find a female ... and again, it is dead! This was dead in my brother's house, Khon Kaen. Thus, more unnatural shots ... though probably better from an ID point of view. Similar to the male, but slightly more robust. Also, note the eggs still attatched to the appendages.

Wing venation ...

 with broken tips - this was the better side! I think she was quite old.

The female appendages ...

amazing how the eggs are still attached!

Male vs. Female

I was lucky enough to also spot a female (this was my first female sighting), though she is really smashed up. It does, however, allow me to spot a few differences - the abdomen is more robust, the wings have a brown tinge (not clear like the male) and don't have any yellow colouration at the base. The eyes don't seem to be metallic either, though this could be simply because it has faded.