Showing posts with label River. Show all posts
Showing posts with label River. Show all posts

Wednesday, May 9, 2018

196: Zygonyx ida Hagen, 1867

Number: 196  
Family: Libellulidae
Genus: Zygonyx  
Species: Zygonyx ida 
Common name(s): N/A  
Synonyms: Pseudomacromia luxuriosus Karsch, 1893    
Habitat: Lowland forested river   
Province(s) sighted: Hala-Bala Wildlife Sanctuary, (Narathiwat) 
Sightings (by me): Rare (1 male) 
In flight (that I have seen): April    
Species easily confused with: Zygonyx iris malayana

A very rare species for Thailand that can be found at Hala-Bala didn't let me down. Zygonyx ida is known from the extreme south of Thailand and is clearly a species that is restricted by range (apparently locally common in Malaysia). However, even right on the border it almost eluded me -- as did a number of species I wanted to see. However, observing a number of fast-flying specimens (mostly Z. iris malayana) I was eventually drawn to a male that, well, just seemed smaller and did its own thing. Instead of flying high up it purposefully flew close to the surface of the river but patrolled constantly in the same way as its more common cousin. After a number of poor shots in flight I managed to get one that was good enough for an ID and it was indeed Z. ida!!! So, I settled down and reeled off a million shots until I managed to get a couple that were of a decent level (for my standards anyway). Amazingly, it landed right in front of me on a long stem of grass but flew off well before I could adjust the camera. Still, I am happy with the photos and hope to see it again one day. I am sure that is can be found elsewhere in Thailand but Hala-Bala seems like the best place right now.

The male

Very similar to Z. iris malayana but is noticeably smaller and has distinct white rings along the abdomen.

Sunday, July 19, 2015

176: Macromidia rapida Martin, 1907

Number: 176   
Family: Synthemistidae 
Genus: Macromidia   
Species: Macromidia rapida 
Common name(s):Common Shadow Emerald  
Synonyms: N/A   
Habitat: Heavily shaded forest river  
Province(s) sighted: Phu Khieo Wildlife Sanctuary, Chaiyaphum   
Sightings (by me): Rare 
In flight (that I have seen): July   
 Species easily confused with: -
Well, another trip to Phu Khieo Wildlife Sanctuary has yielded yet another species for my personal records and another rare one to boot. Towards the end of a long and tough day following the length of the river without much reward, I decided to traipse further inside a covered stretch along the edge. It was seriously quiet, with only a few robber flies and moths punctuating the silence. Then, right at last knockings (well, about 3.00pm to be precise) as I was contemplating calling it a day as you have to leave by 4.00pm, I saw a small shadowy figure hiding deep under cover. I couldn't even be sure it was a dragonfly at first and had to take 3-4 photos just to see. With that, I knew it was new for me. My nerves got the better of me, and I slipped down the banking and into the water. It had gone. Surely. I gingerly made my way back up the banking to the same place and amazingly, it was still there. This time, I was more cautious. However, I couldn't get the right shot as the appendages were blocked by a massive piece of bamboo. I had to take off all my bags and crawl through the thick bamboo, tearing my clothes and slashing my skin in the process. Even then, it wasn't quite right. I nudged the camera forward, followed by my weary body and I was kind of suspended by bamboo and other plants holding on to me for dear life. Finally, I managed to fire off a couple of decent shots. Surprisingly, once I freed myself once more, I managed to catch him with my fingers and got a few shots of the appendages before releasing him back into the gloom. When I got home, I did a little research and it turns out to be Macromidia rapida, a species only recorded once before in Thailand and was recorded at the same place. So another very rare species indeed for Thailand.

Now in hand (but armed with a 180mm lens, I couldn't get the full body in)


The distinct yellowish-black appendages



... and the genitalia just for good measure.