Just another log. Either that or one very confused turtle! I swear I'm not making this up. (These are captive animals in a large pond at a biodiversity center.)
Bromeliad fallen to the forest floor (at least, I assume so). Lowland tropical rain forest. Thank you to Fred Muller for the genus ID.
OK, so it's not a trophy shot, just a souvenir. Digiscoped by the guide through his spotting scope. Gives a good idea of the habitat, at least, just dripping with lichens & mosses & other epiphytes.
Small (~~5 mm). Guayabo Natl Mon, Costa Rica -- mid-elevation (1,000 m) Caribbean rain forest. I have a side view, if that would help.
At windows at night, Talamanca Cordillera, Costa Rica, elev 2700 m. Dasysphinx volatilis was my best guess, & Bayucca concurs. I had no idea how extensive this mimicry complex is!! There are all sorts of (apparently unrelated) genera with this same overall color scheme. But D. volatilis is the only decent match I was able to find on the Seitz plates, tho this one has a much wider black border.
At Palo Verde, we kept finding these skippers resting during the afternoon on the ceiling of our room, or under the eves outside.
No idea what this is about! Maybe fighting over a shell?
The density of crabs here in the tidal wrack was truly impressive -- it was literally crawling with them. Unidentified -- maybe Coenobita compressus?
Heliconius pachinus; many thanks to bayucca for confirmation and info on the diagnostic field mark (see Notes). Cf H. hewitsoni. Not a great shot; wasn't even going to bother posting it, but this species is endemic to the Pac slope of Costa Rica & Panama, & there are not too many other shots on Flickr (and only 1 or 2 taken in the wild). The pattern of red rays seems to match H. pachinus, but don't know if that's actually diagnostic.
Endemic to Costa Rica. Enticed out of her burrow by the guide rustling at the entrance to imitate potential prey. These can live up to 30 years.
Kissing Bug; fully 29 mm (>1") long. Flying around in our room at night; Palo Verde, Costa Rica. And there I was, worrying about a few pesky mosquitoes while blithely photographing the pretty bug! Turns out these things not only bite sleeping humans, they can also transmit Chagas' disease (which fortunately is not prevalent in Costa Rica, though it does occur).
Well, the mosquito netting did its job.
Many thanks to tristanba for the ID.
Eresia ithomioides. I was going crazy looking for this exact pattern among the longwings (Helconiinae), and finally discovered that this is a true brushfoot (Nymphalinae) horning in on this longwing mimicry complex.
Abundant in a pasture at ~2000 meters, above Heredia. Very small -- wingspan maybe 3.5-4 cm.
Small crescent; Anthanassa sp. ID help welcome.
On a gravel road in Guayabo Natl Mon -- N Caribbean slope, 1,000 m. Photo underexposed; has been pushed a bit, but butterfly still may not be quite as dark as it appears. A. sosis? A. atronia? The pattern on the underside matches the latter.
at windows at night, Talamanca Cordillera, Costa Rica, elev 2700 m. ID?
A large, showy butterfly.
at windows at night, Talamanca Cordillera, Costa Rica, elev 2700 m. ID? (Wish me luck!)
Tentative ID thanks to Patrick Coin: Mallodon molarium. Near human habitation bordering mangrove swamp.
The guide grabbed one off the roots. Here it is in the bottom of the boat, fending off the glass bug-eyed monster.
According to The Firefly Forest, this is the brightest bioluminescent insect in the world. Totally surreal. It doesn't flash like a firefly; instead, it just sits there glowing, looking like a pair of headlights on the forest floor. You can tell how bright they are from the fact that the yellow bioluminescence is competing quite successfully with the flash illumination in this shot. Apparently the purpose is purely aposematic (warning coloration to repel predators). Not sure I get that! You'd think if, relative to staying invisible, you're attracting the interest of 1,000 new predators in search of dinner and repelling 999 of them, you'd end up with a net loss. But what do I know? Not as much as Mother Nature, obviously.
We were flabbergasted by this. The guide was looking for a soldier -- those are about twice as big -- but didn't find one offhand, so she did the demo with an ordinary worker. The guide is holding the ant; the ant is holding the weight of that entire branch!
The way she got it to latch onto the twig was by rubbing the end of the twig with her fingers -- since the ant was being 'attacked' by her, it was keen to bite anything that smelled like her.
People used to use ants like these (probably the larger types) as wound sutures: they would get the ant to bite across the two sides of the wound, then twist the head off and leave it in place.
There are at least 3 sizes present here -- a major (soldier) at the bottom, mediae carrying the leaves, and minims, one of which can be seen hitchhiking here. Wikipedia says that besides cleaning the leaf of any fungi etc during the ride, the hitchhikers protect the ants carrying the leaves from attack by parasitic phorid flies.
ID? cf Nyssodesmus python, which looks similar but not the same. 58 mm long.
Beautiful endemic. IDed by our guide (the guide in Monteverde are extremely knowledgeable), & seems to match the few photos out there on the web. Endemic to Costa Rica & Panama (and most likely restricted to relatively small areas of suitable cloud forest habitat within them). Growth habit shot shows a different individual in same stand.