Pandorus Sphinx

Eumorpha pandorus

Brown Marmorated Halloween

Not even pumpkins are safe!  A true creepy critter: the Brown Marmorated Stink Bug was accidentally introduced from Asia and damages a huge range of plant species.

Happy Halloween!

The well-known hourglass marking of Latrodectus mactans, the black widow spider.

Happy Halloween!  Just for ringing the doorbell, I'm presenting you with these eight-legged treats!  Spooky you say?  I suppose it is a matter of perception, I think they are all lovely!  The black widow above has a potent neurotoxic venom, but her bites are rarely fatal for humans.  For insects that blunder into her web however, it is a different story.

The bolas spider below employs a different strategy.  She does not capture prey in a web, but rather forms her silk into a sticky blob on the end of a strand.  She swings this blob at moths that fly near enough to her.  To entice her quarry, she secretes a chemical that emulates pheromones that the moths use to attract mates.  She can even change the chemical signal to match the species of moths that are around.  I've never been able to decide which was cooler: the rodeo style hunt, or the complicated chemical mimicry.

A Mastophora species Bolas Spider hunts with a sticky blob on a silk strand.

 The bolas spider isn't the only spider with a unique method for capturing prey.  The net-casting spider spins a web that is not sticky but has a wooly texture which entangles insects.  It holds the web with its legs, and throws it down on unsuspecting critters that venture too close.

The wolf spider does not hunt with a web at all, rather they stalk their prey and pounce upon them.  Female wolf spiders carry their eggs with them, and when the young hatch, they continue to ride around on mom for a while.  Wolf spiders are frequent visitors in basements, where they eat many other arthropods that may be less welcome.  While a ball of baby spiders may sound like something out of a horror film, I find this parental care to be fascinating.  I'd even go out on an entomological limb and say that it's kinda cute!

Wolf spiders (Lycosidae) carry their young.

A Costa Rican net-casting spider in the family Deinopidae.

Costa Rican Anole

Anole   La Selva, Costa Rica

When insect photography goes bad

The beautiful tachinid fly Trichopoda pennipes, cooked medium-rare a la torchiere

 Trichopoda pennipes is a parasitic fly that attacks true bugs, and is the particular dipteran responsible for 'death by maggot'.  In addition to devouring leaf-footed bugs from the inside, this Halloween-colored insect also attacks stink bugs, and has been used as a biological control agent for some species in Europe.  For some time now I've been wanting to get a picture of these 'feather-legged flies' laying eggs on stink bugs, and so was delighted to catch a mating pair this afternoon.

Unfortunately, Trichopoda like many insects exhibits a behavior that entomologists call "positive phototaxis."  This is the same behavior that draws a moth to a flame, or as it were, a pair of flies to a 300-watt halogen floor lamp.  As soon as I opened the container both flies spiraled upward with Icarus-like disregard, achieving results comparable to the myth.  Alas, rather than the oviposition action shot I had hoped for, we are left with this photo of another upside-down insect.

Her mate, I am afraid, fared even worse and could not be salvaged at all.  Consequently, it smells of charbroiled death in here, and I am inspired to retire for the evening.