The New Camera has enabled me to take shots that the beloved, well-used but limited Old Camera couldn’t handle. Both are pretty good at macro, but zoom is the strength of the new camera. Effective zoom has made it possible for me to get a shot of something I’ve wanted to capture for a long time: the lovely paper wasps who float like little golden sea-planes on the surface of the pool.

Above, Paper Wasp afloat: no pontoons needed — its light body weight, waxy coating, and ability to create floatation cushions under its feet by not breaking surface tension, enable it to bob on the water while it collects mouthfuls to build with — you can see from the surface distortion in the photo above that this wasp has its mouthparts on the water, actively taking it in. Once it’s tanked up, the insect will rise nearly vertically off the surface to fly back to the nest. They almost never swamp, even in the chop I make swimming laps.

These golden sea-planes are Polistes wasps, commonly called Paper Wasps because of the papery, multi-cellular nests they build. Ours are probably Polistes flavus, but I’d need confirmation from someone who knows more about wasps than I do, to be certain. They seem to be peaceable sorts, and tolerate us moving around their space. In our experience, they’ve never acted aggressively, even once when E was tugging up the dead lemon grass where unbeknownst they’d built their nest. A few of them flew up and out of the fibrous clump. He scampered away, but there was no trouble — none of them even bothered to escort him away from the scene. Paper wasps are good for a garden: the adults drink plant nectar (and hummingbird food) for their own nutrition, but they are tireless predators of small voracious caterpillars and other soft-bodied insects which they prepare by chewing and deliver as food balls to their young waspy larvæ. 

(Both photos A.Shock — Do click to enlarge, especially the upper one. There’s lots of good detail to be gained, like sparly water drops on its abdomen.)

In anticipation of a major and photogenic meteorological event, I went out just now to photograph the storm.  With the exception of some dramatic skies, the whole mess skipped over us (we need the rain, but I can’t say I miss dust and wind). But I caught something else brooding and unpredictable. It shouldn’t be hard for you to spot it, its eye is partly open. Horizontal napping bark.* (See HNB the first here.) Once you’ve found it, click to enlarge, I’ve uploaded a generous-sized file.

For readers unfamiliar with the group of birds called nightjars, this is a Lesser Nighthawk (Chordeiles acutipennis, a member of the caprimulgid family or goat-suckers, along with Whippoorwills and kin). It’s hunkered parallel to a mesquite branch with its tail pointed at the camera. The bird flew up off the ground as I was watching the sky, did a lap of the neighbor’s yard, and settled on a branch where it will stay until it’s dark enough to launch on an aerial forage. Even though the bird is facing slightly away from the camera and behind some twigs, you can see the distinctive white throat patch, and the white mark on the primaries neatly folded over its tail. This is one of a pair of birds who nested on the gravel of a neighbor’s front yard. In an effort to keep wildlife out, the homeowner created a stir along the block (it’s not a very pretty fence) and also a really good habitat for ground-nesting birds. I look at the unpopular fence a little differently, knowing that a pair of nighthawks has fledged nestlings inside its confines for each of the last three years, at least. (Photo A.Shock)

*Vertical napping bark would be, of course, an owl. This concept inaugurated the Spot the Bird feature here on Three Star Owl blog.

<< The last post was a photo-op provided by the death of a Tiger Whiptail by drowning. But today I saw the tiniest slip of a whiptail — maybe fresh from the egg — snapping up ants on the back porch. Life goes on.

This morning, when I opened the pool skimmer basket, a female Palo Verde Root Borer Beetle more than three inches long was swirling around inside, caught in the suction whirlpool. She looked defunct. I fished her out, arrayed her on a large ammonite fossil, and took some macro shots. Just as I was finishing up a couple of her feet started flexing and waving. These are very tough creatures: this isn’t the first time moribund subjects have resurrected during a photo session. I put her in a sheltered place to recover or to complete her expiration and fulfill the local ants’ devotion to energetic thrift. I recently read that although the robust and destructive larvæ of this beetle can live underground for several years chewing on tree roots like Niddhog gnaws Yggdrasil, the adult beetle will only live the span of a single monsoon season. It’s entire purpose is to mate, fertilize or lay eggs, and die.

Here’s a raccoon’s-eye view of her (all photos A.Shock):

When I checked again later, she was gone. I’m not sure what scavengers are abroad in daylight hours who are large enough to nab her — the foxes and raccoons won’t come out until after dark, so maybe she revived and crawled away to burrow down into the soil to lay her eggs. Here’s a foot on the second pair of legs, like a grappling hook. These sticky hook-feet come in handy since the beetle’s favored method of travel is to bomb around through the moist monsoon air until it hits something, then cling. If one hits your face, it hurts, even though they generally just bounce off. >>

Finally, below is an image I posted here previously called “Convergent Evolution”. This is the other “drowning victim” I mentioned earlier, the one who fully revived as I was photographing her (see the blurry foot? That was just the first indication). The pinchy mouthparts have nothing to do with eating.  They are for battle — males use them to vanquish competitors, and to subdue females. The larva does all the feeding for this species. How much does that animal look like a pair of pliers? Clearly convergent evolution.

Yesterday a mature Tiger Whiptail (Aspidoscelis tigris) drowned in the pool.

<< about 4 inches snout to vent, 8 inches of trailing tail (all photos A.Shock)

It’s always sad when something succumbs to the pool, but I especially love these “checkerbirds” who inhabit our yard: the Tiger Whiptails are good-sized terrestrial lizards who, along with the smaller, climbing Ornate Tree Lizards, are the species we see most often. They’re active in the day, and glide smoothly from cover to cover like speedy little slender-tailed alligators, snapping up ants and other small invertebrates. Over the years I’ve rescued several clinging to the tiles or swimming along the edge looking for a way out, but it doesn’t take them long to tire and drown. When I’ve scooped survivors out of the pool, it’s always an amazing sensory experience — their limber bodies are sleek and satiny, heavy for their size and cool from the water. I’ve never yet had one try to bite, but they’ll often cling with stickery toes to my hand until I release them. Sometimes they’ll run back to the shade of my foot and climb up onto it to dry out.

I hate losing a neighbor like this — I’m a fan of promoting populations of consumers higher up the trophic pyramid within our garden walls (except perhaps coyotes). At least yesterday’s unfortunate event presented the opportunity to examine the excellent animal up close, and also macro photo ops (more new camera practice!)

The victim was a glorious full-grown individual — I think it’s a male, since the pores on the inside of its thighs are prominent (photo below).  These femoral pores secrete a waxy pheromone substance to mark territory and attract mates. The lizard leaves this marker behind as he moves around — the reptile equivalent of a tomcat signalling his turf, without the spray action (or human-detectable odor, although the cats always seem to know when a lizard is near, even through the door since, thugs that felines are, they’re incarcerated full time).

Up close it’s easy to appreciate the panoply of scales this lizard ports: smooth, fused plates on the head, flexible bead-like dorsal skin, overlapping scaly sides, scute-like belly protection, articulated tubular toe armor — an astounding and functional body-covering. The scales of the limb crevices are fine-textured for flexibility, arrayed like gussets in a knight’s articulated plate armor under the arm and at the groin where the chain maille shows through. The scales are heavier and broader where they need to withstand battle (top of the head and legs) and wear (under belly, thighs, and tail).

Although the lizard’s lower lid is drawn up nearly closed, you can still see the iris behind it.

I don’t know if whiptails has an additional inner eyelid (or nictitating membrane like some other lizards and many birds), but it wouldn’t need one: the translucent lower eyelid functions in the same way, providing protection without losing much visibility. That’s a spectacular protective feature for an animal who spends much of its day burrowing and sleeping in gritty soil. And you can bask in the open without risk of desert dry-eye or being caught napping by approaching danger, not to mention cutting down on UV damage to cornea and retina while coursing after ants on the glaring pool deck. (Predators’ eyes are notoriously at risk for injury by thrashing prey, and losing vision in even one eye is a serious blow to survival chances.) And it’s constructed of transparent scales! Just look at it! Be sure to click on the image for optimum viewing of the orderly, least-surface soap bubble geometry of those clear scales. Plus there are a couple of bonus phoretic mites. Do you see them?

Below is another pool victim in a post from 2009, drawn fresh from a ziplock in the freezer. The older post also mentions that at the time there was a second ziplock bag in the freezer with a scorpion in it. I’d forgotten about that one. I wonder if it’s still there? If so, it’ll turn up sooner or later.

Heavy deadlining at the clay bench for summer shows PLUS a new camera mean this space will have mostly photographic posts for a stretch. Here are two lizards who obliged while I was in New Mexico recently.

First up is a Crevice Spiny Lizard (bearing the excellent scientific handle Sceloporus poinsettii but in no way resembling a red flower often associated with winter holiday decor, except in a tendency towards pointiness). He was basking unabashedly on the waist-high peakity peak of a large triangular rock in the middle of the well-trodden trail to the Gila Cliff Dwellings.He (or she, I’m not acquainted with S. poinsettii well enough to know which, and they’re said to be similar anyway) simply did not care that I was there.  It was breezy and the foliage swayed, exposing him alternately to blotches of shade and sunbeams. He didn’t care about that either. Of course, armed with long telephoto capability, I had no need to approach closely to observe him. We did, however, have to pass very near in order to finish the jaunt up to the cliff dwellings, and if I stopped briefly for a close perusal — which the subject endured without flinching — who can blame me? A lizard whose prime basking platform is a busy trailrock must get good at ignoring curious people. Crevice Spinies have a rep for being shy (one field guide recommends binoculars as an observation aid), so this guy must be an outlier.

Below is another photo of the same liz. The subtle coppery green iridescence of the scales was caught by the camera in this shot, an artifact of sun angles and lens physics, apparently: to our human eye, the animal looked mostly gray and white with darker bands. Another lizard would have been all over the beautiful radiance immediately, its eye and brain built specifically to receive that shimmering information.

Now meet a whiptailed lizard (below), whose textures are quite different from the spiny lizard above. I think she’s a Desert Grassland Whiptail (Aspidoscelis uniparens).  Some species of whiptail are unisexual: all individuals are females who reproduce by laying unfertilized eggs each with a tiny clone embryo ready to hatch out and carry on mama’s DNA. The Desert Grassland Whiptail is one of them, which explains its Latin moniker. She’s very beady and sleek in the sun — whiptails are abroad in the heat of the day — but was well warmed up and didn’t stay long to be admired, or to be questioned on her parthenogenetic lifestyle; there were termites to eat and predators to evade.