The Ybycui National Park is located 150 kilometers from Paraguay's capital Asunción. It is a small (approx. 5,000 hectares) but beautiful park and protects a sample of the westernmost extent of the Upper Parana Atlantic Forest.
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There are many waterfalls in the park. The summer in Paraguay begins at the end of December and ends at the end of March. Very high temperatures (48°C / 118°F) and little rain have caused a low water level.
![Lasaia agesilas - Glittering Sapphire](https://static.wixstatic.com/media/35a196_394a191eb95046328ec658f8c8322e95~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_394a191eb95046328ec658f8c8322e95~mv2.jpg)
Countless butterflies were seen on the rocks along the river. Very striking was the Glittering Sapphire (Lasaia agesilas), also called Black-patch Bluemark. I have never seen an animal with such an intense blue color before.
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I was not the only one who was interested in the butterflies. This huge Rococo Toad (Rhinella schneideri) was hunting them. A rather rare observation for me to see a toad this active in bright sunshine. With this opportunity I tried to get the habitat into the picture.
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Can you spot the dreaded beauty, hidden in this picture?
![Bothrops araraca - Jararaca](https://static.wixstatic.com/media/35a196_e11fa25fa5e448e2a3abdc0a5252a2fe~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_e11fa25fa5e448e2a3abdc0a5252a2fe~mv2.jpg)
Here it is up close, patiently and curled up: the venomous Jararaca (Bothrops jararaca). In Paraguay this snake is called Yarará. It is a very well camouflaged ambush predator.
![](https://static.wixstatic.com/media/35a196_5b522c2664c14b13a00ca80872c999cc~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_5b522c2664c14b13a00ca80872c999cc~mv2.jpg)
![Callicore pygas - Godart's Numberwing](https://static.wixstatic.com/media/35a196_a55d4b65830f4fd1a8ae4c565e756b95~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_a55d4b65830f4fd1a8ae4c565e756b95~mv2.jpg)
The Godart's Numberwing (Callicore pygas) was probably my favorite butterfly of the trip to Paraguay. It was actually hard to take this picture and I had to crawl on the rocks for quite a long time.
![](https://static.wixstatic.com/media/35a196_fb3eadd8f578429aac9e3c357fe4610b~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_fb3eadd8f578429aac9e3c357fe4610b~mv2.jpg)
The Brown Leaf Lizard (Stenocercus caducus) is very well camouflaged. This little reptile was sitting motionless in the vegetation. So I was able to get a nice macro shot.
![](https://static.wixstatic.com/media/35a196_38aa1b0574f44d6086aa4fd38e4cd909~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_38aa1b0574f44d6086aa4fd38e4cd909~mv2.jpg)
![](https://static.wixstatic.com/media/35a196_f868b212bdda480785a8a25aab778b89~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_f868b212bdda480785a8a25aab778b89~mv2.jpg)
Not as shiny blue as the Glittering Sapphire, but still a very nice looking Weevil. I don't know the exact ID of this cool insect, so maybe you can help me...
![](https://static.wixstatic.com/media/35a196_795dc24fc0984d4481b4e3b58628fdb3~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_795dc24fc0984d4481b4e3b58628fdb3~mv2.jpg)
![](https://static.wixstatic.com/media/35a196_c33bc9bdbe23437e996e11170aa826c8~mv2.jpg/v1/fill/w_980,h_654,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/35a196_c33bc9bdbe23437e996e11170aa826c8~mv2.jpg)
Lichtenstein's Green Racer (Philodryas olfersii) was a great sighting at the end of the day. This snake is venomous and there have been reports of serious bites causing local and systemic effects requiring medical treatment.
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