An Autumn Encounter with a Praying Mantis

     Out on the deck on a sunny October afternoon, I spotted something interesting.  A praying mantis was making its way down the drain pipe attached to our house.  Facing downward, it moved slowly.  

     I had to stare.  The long, pale abdomen bulged.  Never before had I seen so prominent a ‘belly’ on a praying mantis.  Normally, the praying mantis’s abdomen appears tucked under the insect’s long, straight, brownish or greenish back.  But not only was this one’s abdomen bulging;  it was  throbbing!  I gawked at the thin, papery, slightly shiny surface of the abdomen as it pulsated.

     Was this a pregnant female, I wondered, about to lay her eggs?

a praying mantis, moving down the drainpipe, her swollen abdomen throbbing

a praying mantis, moving down the drainpipe, her swollen abdomen throbbing

     Unfortunately, I wasn’t able to hang around long enough to see what actually happened next.  But when I returned later, I searched the drain pipe and the surrounding surfaces for a praying mantis egg case.  Unfortunately, I couldn’t find one.

     But I do believe I was witnessing the prelude to the laying of praying mantis eggs.  After all, praying mantises do mate in late summer, and they do lay their eggs in the fall.  Apparently, the eggs are released in a spit-like mass that hardens and attaches to some surface above the ground.  The egg case weathers the winter months, and opens in the spring to release 100-200 baby praying mantises.


     Anyone who has been curious about praying mantises’ mating practices, where the female devours the male’s head, will want to read the following excerpt from The Pilgrim at Tinker Creek, written by one of the best nature writers ever, Annie Dillard.  I read this amazing description in horrified fascination.–April Moore



It was several years ago that I witnessed this extraordinary procedure, but I remember, and confess, an inescapable feeling that I was watching something not real and present, but a horrible nature movie, a “secrets-of-nature” short, beautifully photographed in full color, that I had to sit through unable to look anywhere else but at the dimly lighted EXIT signs along the walls, and that behind the scenes some amateur moviemaker was congratulating himself on having stumbled across this little wonder, or even on having contrived so natural a setting, as though the whole scene had been shot very carefully in a terrarium in someone’s greenhouse.


I was ambling across this hill that day when I noticed a speck of pure white. The hill is eroded; the slope is a rutted wreck of red clay broken by grassy hillocks and low wild roses whose roots clasp a pittance of topsoil. I leaned to examine the white thing and saw a mass of bubbles like spittle. Then I saw something dark like an engorged leech rummaging over the spittle, and then I saw the praying mantis.


She was upside-down, clinging to a horizontal stem of wild rose by her feet which pointed to heaven. Her head was deep in dried grass. Her abdomen was swollen like a smashed finger; it tapered to a fleshy tip out of which bubbled a wet, whipped froth. I couldn’t believe my eyes. I lay on the hill this way and that, my knees in thorns and my cheeks in clay, trying to see as well as I could.


I poked near the female’s head with a grass; she was clearly undisturbed, so I settled my nose an inch from that pulsing abdomen. It puffed like a concertina, it throbbed like a bellows; it roved, pumping, over the glistening, clabbered surface of the egg case testing and patting, thrusting and smoothing. It seemed to act so independently that I forgot the panting brown stick at the other end. The bubble creature seemed to have two eyes, a frantic little brain, and two busy, soft hands. It looked like a hideous, harried mother slicking up a fat daughter for a beauty pageant, touching her up, slobbering over her, patting and hemming and brushing and stroking.The male was nowhere in sight. The female had probably eaten him. Fabre says that, at least in captivity, the female will mate with and devour up to seven males, whether she has laid her egg cases or not. The mating rites of mantises are well known: a chemical produced in the head of the male insect says, in effect, “No, don’t go near her, you fool, she’ll eat you alive.” At the same time a chemical in his abdomen says, “Yes, by all means, now and forever yes.”While the male is making up what passes for his mind, the female tips the balance in her favor by eating his head. He mounts her. Fabre describes the mating, which sometimes lasts six hours, as follows:The male, absorbed in the performance of his vital functions, holds the female in a tight embrace. But the wretch has no head; he has no neck; he has hardly a body. The other, with her muzzle turned over her shoulder continues very placidly to gnaw what remains of the gentle swain. And, all the time, that masculine stump, holding on firmly, goes on with the business! … I have seen it done with my own eyes and have not yet recovered from my astonishment.

I watched the egg-laying for over an hour. When I returned the next day, the mantis was gone. The white foam had hardened and browned to a dirty suds; then, and on subsequent days, I had trouble pinpointing the case, which was only an inch or so off the ground. I checked on it every week all winter long. In the spring the ants discovered it; every week I saw dozens of ants scrambling over the sides, unable to chew a way in.


Later in the spring I climbed the hill every day, hoping to catch the hatch. The leaves of the trees had long since unfolded, the butterflies were out, and the robins’ first broods were fledged; still the egg case hung silent and full on the stem. I read that I should wait for June, but still I visited the case every day. One morning at the beginning of June everything was gone. I couldn’t find the lower thorn in the clump of three to which the egg case was fixed. I couldn’t find the clump of three. Tracks ridged the clay, and I saw the lopped stems: somehow my neighbor had contrived to run a tractor-mower over that steep clay hill on which there grew nothing to mow but a few stubby thorns.So. Today from this same hill I cut another three undamaged cases and carried them home with the others by their twigs. I also collected a suspiciously light cynthia moth cocoon. My fingers were stiff and red with cold, and my nose ran. I had forgotten the Law of the Wild, which is, “Carry Kleenex.” At home I tied the twigs with their egg cases to various sunny bushes and trees in the yard. They’re easy to find because I used white string; at any rate, I’m unlikely to mow my own trees. I hope the woodpeckers that come to the feeder don’t find them, but I don’t see how they’d get a purchase on them if they did.

— From Pilgrim at Tinker Creek
Annie Dillard
©1974 Harper & Row





3 Responses to “An Autumn Encounter with a Praying Mantis”

  1. Maggie Says:

    Wow! How cool! Amazing what is out there to behold, if we just take the time to look! Incredible mating practice! Thanks for sharing.

  2. Tanya Says:

    Wow! What an exciting drama! Thanks, April.

  3. Diane Says:

    Thank you for bringing Annie Dillard’s writing to bear on this experience with the praying mantis. I wonder how the female gets rid of the male corpse once the mating is finished….

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