We grow succulents at our house in containers, and some of them can’t take the heat of the low desert summers, while others can’t take the hardest frosts of winter. This results in a constant migration of plants inward and outward between the house and yard, depending on the season. The indoor space the plants inhabit is a set of wall-shelves perched in a loft area above the bed. Every once in a while the cats get up there – in the avatar of furry negative forces of destruction and sudden catastrophe – and implement their conviction that one or the other potted plant would be better on the carpet, which results in a loud thump, crushed foliage, and a shower of dirt and gravel onto us in the middle of the night, causing much heart-pounding and swearing.

The other result of having the indoor-outdoor shift in place is that things get imported into the bedroom that really would be better off outside. Last fall, unbeknownst to us, one of the plants that came in for the cold season was an Adenium where a Praying mantis had secreted her breadloaf-brown egg case. The first we knew about it was when E went up the spiral staircase to water plants, and found, pinnacled on the tip of a succulent, the tiniest possible baby green mantis – looking just like a big one, but not as big as a human fingertip. A quick search around yielded a dozen more, freshly hatched, as well as the egg-case itself on a nearby plant.

We instantly whisked the nest-plant outside, before the fur-bearers discovered the movable feast of lively greenlings, and where they could disseminate into the garden and find plenty of food to eat, unlike the largely tiny-prey free desert of the bedroom.  We’ve had young mantises around before and they are very voracious younglings, eating anything that moves which they are strong enough to grasp and render immobile.  This is the other function of allowing them to wander off, each in a different direction — they will eat each other, if hungry enough.

By next morning, all but one of them had made its way away from the eggcase Adenium, except for one guy who figured he was okay where he was.  With luck they will mature into one of the mantids native to the Sonoran desert.  Or, they may grow into an imported mantid from the Mediterranean or China that people release to control garden pests.  Of course, many may be eaten by birds or raccoons, but even that way, they’re in the natural system, and out of the bedroom.  Bonne chance, tiny predators!

(all photos by E. Shock)

Here are some boffo blue beetles.

I don’t know anything about them. We found them last year just below a cloud forest in southern Veracruz, Mexico, on the side of a road that crossed a re-grown lava flow. There were hundreds of them, congregating for reasons possible to guess at, but known only to themselves, in an astounding density. Each is just over 1/2 inch long, and the color is true.

Anyone know who they are?

Here is an bonus unidentified beetle, big and green, seen at the same location.  It was almost 2 inches long.  The irregular dark shape that looks like backwards Texas in the highlight of its carapace is the reflection of my hand holding the camera.  That’s how reflective its shell was.  Click to enlarge, and look at all its little pores!

(All photos A.Shock)

Update: After looking around the internet, I believe the green beetle on the left is a Fig beetle, Cotinus sp.

I’m also working on the theory that the blue beetles may be cobalt milkweed beetles, Chrysochus cobaltinus, but further investigation is needed.

If these IDs are correct, both beetles are quite common, and also occur in the southern US.  The fig beetle is a favorite prey item of Mississippi kites, and no wonder — it looks like it might have some meat under its hood.

After our latest monsoon event, the yard was freshly rinsed and all dampy.  Everything was making the most of the moist: the succulents were sucking up water, the trees were drinking and dripping, and the whole world was washed in that most deserty perfume of creosote.

Also, the Cactus Longhorn Beetle came out.  Here is its picture, on a “Bunnyears” prickly pear (Opuntia macrodasys).

From a horticultural point of view, the cactus longhorn beetle (Moneilema gigas) is a serious pest: its eggs hatch into larvae which bore into the tissue of cactus, especially Opuntia, and the adults are happy to munch on tender growing edges of cactus pads.  The boring larvae exude their waste as an unsightly tarry goo on the cactus outside their boreholes, and their tunneling can be fatal to susceptible individual plants; the damage gnawing adults do to pads can alter an even growth pattern in new leaves.  So, many desert gardening sites recommend the barbaric “Insta-stomp” approach to relating to this large beetle. (They’re flightless and are easily captured.)

E took pictures of this adult, possibly just eclosed after the monsoon rain, and we left it to trundle off, having admired its long “horns” with the white “elbows” on them.  Stomping just didn’t seem like a viable alternative — frankly, I don’t know if flip-flops are up to the task of exterminating such a robustly-crusted arthropod (note the mediaeval spines around its thorax). Anyway, there’s plenty of Bunny Ears to go around.

Bonus Monsoon cactus flowers

Most Sonoran desert plants bloom in spring after the winter rainy season, but there are many that take advantage of the Monsoon rains, and bloom in late summer and early fall.  This barrel cactus in our yard, a Ferocactus herrerae, is currently putting on an extravagant floral display.

(Both photos E. Shock)

…how the photo E was taking turned out (from this post), here it is.  Now you know what the ventral surface of a NZ walking stick looks like.

Here is E, making a new friend in the Kauri Forest.  It may be big and green, but at least it doesn’t bite, like the Sand flies.

(Photo A. Shock)

Every once in a while, I find a clay pot — a tiny, perfect clay pot — on the wall of the house.  They look like little half-buried Mediterranean amphorae, without handles, with a narrow neck and a flared rim, the entire thing only half an inch across.  But they have no openings: like the false-necked vessels drachmai-conscious Athenian families left at the graves of loved ones — they looked full of precious oil while only actually containing a thimbleful — these tiny pots are sealed at the top.  Sometimes, however, they have a hole in the side, as if a micro-tomb-robber struck the belly of the pot with a spade, to sift through the contents.

A little spadework in books and on the internet turned up the answer to who the tiny potters in our yard might be : Microdynerus arenicolus, the Antioch Potter Wasp, who builds up this mud cell for its offspring one mouthful of clay at a time.

You would think a wasp bringing mouthful after mouthful of mud to a wall right by the front door might be observed easily, but I’ve never knowingly seen one of these wasps on the job.  What I can glean about the appearance and habits of the Antioch Potter Wasp is that they are about half-an-inch long, live in California, southern Arizona and New Mexico, and are solitary wasps.  The adults have creamy white or yellow and black markings, and there are subtle differences in coloring and morphology between males and females that are probably mostly important to other wasps and entomologists.  (The photo on the left is not our Potter Wasp, it’s a related species from Australia.)  The females have stingers, but are “docile”.  They are also “domestic”: it’s the female who does all the housework.  Here’s what an Arizona Game and Fish document says about the Antioch Potter Wasp:

These are solitary wasps, each female constructing nests and provisioning them for her own offspring. Each nest looks like a small jug, about half an inch in diameter, with a short sealed neck. When the female decides to make a cell, she selects a sheltered place, and then carries dollops of mud there for construction. This is a precision process with a thin walled pot resulting. When the pot is almost completed, with just room for her to get her head in, she starts to provision the cell with hairless caterpillars, which she has paralyzed by stinging them in the central nervous system. Once the cell is full she lays an egg on the prey and restarts the cell making process. She adds mud to the edges of the nearly spherical pot. Closing the sphere presents problems that are solved by simply adding extra mud and leaving a small neck. The larva that hatches from the egg eats the prey, spins a cocoon inside the pot and pupates. When the new adult is ready to leave the pot, it simply makes a hole in the side and leaves. Using the neck would be logical but that is where the pot is the thickest.

–Arizona Game and Fish Department. 2004. Microdynerus arenicolus. Unpublished abstract compiled and edited by the Heritage Data Management System, Arizona Game and Fish Department, Phoenix, AZ. 4 pp.

Unless you’re a hairless caterpillar, this is a fascinating process.  Especially for a potter: the technique of building a pot from the bottom up, adding little bits of clay at a time, and contouring it as you go is exactly the technique potters use to build vessels or vessel-like sculptures.  Vessels of any size and shape can be made as long as the supply of moist clay holds out: the potter wasp makes her own by carrying a mouthful of water to a dry clay source and mixing it up to the right consistency and carrying it to the construction site.  To the right is a picture of a Three Star Owl VLO (Very Large Owl) being constructed in the same way as a potter wasp builds her nest.  (It will be more than two feet tall and at this point lacked its face.  Please note that the finished owl sculpture was not provisioned with hairless caterpillars nor were any eggs at all laid during the process.)

I determined to keep an eye on the little wasp-pot, hoping to see a new wasp break free and fly away, to carry on the work of potter wasps in the yard.  Of course, the next time I looked, there was the hole, and the empty belly of the tiny clay amphora — the wasp had flown.  Here’s a picture of the hole made from the inside out by the wasp itself, not a grave robber after all:

Etymology

The common name, Antioch Potter Wasp, seems like a very appropriately Mediterranean name for an organism that makes structures that look like amphorae, the storage and shipping vessels found all over the Mediterranean region from about the 13th century BC until the 7th century AD.  But it’s mere coincidence, and not connected with the ancient city of Antioch on the Levantine coast of the Mediterranean (the stretch of land from which the earliest amphorae, the so-called “Canaanite jars”, come), a hub of commerce and shipping.  The species was given its name from the town of Antioch, California, also a hub of commerce and shipping, where the type specimen was collected and described.

(Photos: #1, 3, 4, A.Shock, Three Star Owl.  #2, from the following site: http://www.geocities.com/brisbane_wasps/images/MudDau7.jpg, no photo credit found)