Ants

ants, marcher
known in the jungles of Schendi as 'The Marchers' are these aggressive carnivorous ants.  Each is about 2 inches long, with a shiny black exoskeleton and two antennae. They may number in the millions when marching, their path's widening to as much as 500 feet when they overtake, swarm over, and devour all flesh, living or dead, in their path.  Their bite is extremely painful, but not poisonous.  Their victims die from multiple repeated bites, it is not a quick death.  Tarl Cabot and the small men, led a column of Marchers, by baiting them with fresh meat, the ants eventually overran an encampment of the Mamba people, which Tarl Cabot was intending to attack and he used the ants for that. We had trekked but a short way into the jungle where the leaded of the small men held up his hand for silence.  I had then heard, as I had once before, but had been unable to place the noise, the sound, the strange sound, as of a small wind moving leaves.  I had heard it on the edge of the lagoon, but had not understood it.
Soon, as we approached more closely, quietly, the sound became much louder.  It was now clearly distinguishable as a quite audible rustling or stirring.  But there was no wind.
"The Marchers," said the leader of the small men, pointing.
The hair on the back of my neck rose.
I saw now that the sound was the sound of millions upon millions of tiny feet, treading upon the leaves and fallen debris of the jungle floor.  Too, there may have been, mixed in that sound, the almost infinitesimal sound, audible only in its cumulative effect, of the rubbings and clickings of the joints of the tiny limbs and the shiftings and adjustments of tiny, black, shiny exoskeletons, those stiff castings of the segments of their bodies.
"Do not get to close," said the leader of the small men.
The column of the marchers was something like a yard wide.  I did not know how long it might be.  It extended ahead through the jungle and behind through the jungle farther then I could see in either direction.  Such columns can be passangs in length.  It is difficult to conjecture the numbers that constitute such a march.  Conservatively some dozens of millions might be involved.  The column widens only as food is found; then it may spread as five hundred feet in width.  Do not try and wade through such a flood.  The torrent of hurrying feeders leaves little but bones in its path.
"Let us go toward the head of the column," said the little man.
Explorers of Gor Page 400

"Look," had said the leader of the small men this morning, :scouts."
He had thrown to the forest floor a portion of the slain tarsk.  I watched the black segmented bodies of some fifteen or twenty ants, some two hundred yards in advance of the column, approach the meat.  Their antennae were lifted.  They had seemed tense, excited.  They were some two inches in length.  Their bite, and that of their fellows, is vicious and extremely painful, but it not poisonous.  There is no quick death for those who fail to escape the column.  Several of these ants formed a circle, their heads together, their antennae, quivering, touching one another.  Then, almost instantly, the circle broke and they rushed back to the column.
"Watch," had said the small man.
To my horror I had then seen the column turn toward the piece of tarsk flesh.
Explorers of Gor Page 401-402

ants, white

It lived on the white ants, or termites, of the vicinity, breaking apart their high, towering nests of toughened clay, some of  them thirty-five feet in height, with its mighty claws, then darting its four-foot-long tongue, coated with adhesive saliva, among the nest's startled occupants, drawing thousands in a matter of moments into its narrow, tubelike mouth
Explorers of Gor Page 293

Beetles In the second level, that of the canopies, is found an incredible variety of birds, warblers, finches, mindars, the crested lit and the common lit, the fruit tindel, the yellow gim, tanagers, some varieties of parrot, and many more. Here, too, may be found snakes and monkeys, gliding urts, leaf urts, squirrels, climbing, long tailed porcupines, lizards, sloths, and the usual varieties of insects, ants, centipedes, scorpions, beetles and flies, and so on.
Explorers of Gor  page 311-312

Centipedes

In the second level, that of the canopies, is found an incredible variety of birds, warblers, finches, mindars, the crested lit and the common lit, the fruit tindel, the yellow gim, tanagers, some varieties of parrot, and many more. Here, too, may be found snakes and monkeys, gliding urts, leaf urts, squirrels, climbing, long tailed porcupines, lizards, sloths, and the usual varieties of insects, ants, centipedes, scorpions, beetles and flies, and so on.
Explorers of Gor  page 311-312

Golden Beetle
 An insect, roughly the size of a rhinoceros, which lives in the caverns below  the Nest of the Priest Kings in the Sardar Mountains; its prey are the  Priest Kings

" 'What does the Golden Beetle kill?' I asked.  'Priest-Kings,' said the second slave."
Priest-Kings of Gor, page 105

"It was about the size of a rhinoceros and the first thing I noticed after the glowing eyes were two multiply hooked, tubular, hollow, pincerlike extension that met at the tips perhaps a yard beyond its body.They seemed clearly some aberrant mutation of its jaws. Its antennae, unlike those of the Priest-Kings, were very short. They curved and were tipped with a fluff of golden hair. Most strangely perhaps were several long, golden strands, almost a mane, which extended from the creatures head over its domed golden back and fell almost to the floor behind it. The back itself seemed divided into two thick casings which might once, ages before, have been horny wings, but now the tissues had, at the points of touching together, fused in such a way as to form what was for all practical purposes a thick, immobile golden shell."
Priest-Kings of Gor, page 180

"The exudate which forms on the mane hairs of the Golden Beetle, which had overcome me in the close confines of the tunnel, apparently has a most intense and, to a human mind, almost incomprehensibly compelling effect on the unusually sensitive antennae of the Priest-Kings, luring them helplessly, almost as if hypnotized, to the jaws of the Beetle, who then penetrates their body with its hollow, pincerlike jaws and drains its body of fluid."
Priest-Kings of Gor, page 257

Grasshopper, red
roughly the size of a horned gim, about 4 oz., red in color

We had brought certain goods with us from the canoe to our camp.
"Oh!" cried the girl, startled. A grasshopper, red, the size of a horned gim, a small, owl like bird, some four ounces in weight, common in the northern latitudes, had leaped near the fire, and disappeared into the brush
Explorers of Gor page 293

Insects in general

"On the tenth day, instead of the pan of bread, with the water, Ute thrust a different pan under the
door. I screamed. Tiny things, with tiny sounds, moved, crawling over and about one another in it.
I screamed again, and thrust it back out. It had been filled with the fat, loathsome green insects
which, in the Ka-la-na thicket, Ute had told we were edible. Indeed, she had eaten them. 'they are
nourishing,' she had said."
Captive of Gor, page 315

In the second level, that of the canopies, is found an incredible variety of birds, warblers, finches, mindars, the crested lit and the common lit, the fruit tindel, the yellow gim, tanagers, some varieties of parrot, and many more. Here, too, may be found snakes and monkeys, gliding urts, leaf urts, squirrels, climbing, long tailed porcupines, lizards, sloths, and the usual varieties of insects, ants, centipedes, scorpions, beetles and flies, and so on.
Explorers of Gor page 311-312

Lice, Tarn
 marble sized parasites that infest wild tarns.

I withdrew some of the lice, the size of marbles, which tend to infest the wild tarns, and slapped them roughly into the mouth of the tarn, wiping them off on his tongue. I did this again and again, and the tarn stretched out his neck.
Tarnsman of Gor Page 144

Needle Flies
sometimes called Sting Flies (see below)

Rennel

that once an army of a thousand wagons turned aside because a swarm of rennels, poisonous, crablike desert insects, did not defend its broken nest
Nomads of Gor, page 27

Sand Flies

"Following such rains, great clouds of sand flies appear, wakened from dormancy. These
feast on kaiila and men. Normally, flying insects are found only in the vicinity of the oases."
Tribesmen of Gor, page 152

Scorpion

In the second level, that of the canopies, is found an incredible variety of birds, warblers, finches, mindars, the crested lit and the common lit, the fruit tindel, the yellow gim, tanagers, some varieties of parrot, and many more. Here, too, may be found snakes and monkeys, gliding urts, leaf urts, squirrels, climbing, long tailed porcupines, lizards, sloths, and the usual varieties of insects, ants, centipedes, scorpions, beetles and flies, and so on.
Explorers of Gor  page 311-312

Silk Worm

"Originally, doubtless beans were brought from Earth, much as certain other seeds, and silk
worms and such."
Assassin of Gor, page 107

Slime Worm
A long, slow, blind worm which inhabits the caverns below the Nest in the Sardar; scavenges the remains of the Golden Beetles kills

We had not walked far when we passed a long, wormlike animal, eyeless, with a small red mouth, that inched its way along the corridor, hugging the angle between the wall and the floor....
'What do you call it?' I asked.
'Oh,' said one of the slaves, 'it is a Slime Worm.'...
'It scavenges on the kills of the Golden Beetle...' "
Priest-Kings of Gor, pages 105-106

Spider

Rock Spider
usually brown or black, their habit size and color suggest that of a rock thus the name This afternoon, late, when we had come inland, almost in the dusk, she had become entangled in the web of a rock spider, a large one. They are called rock spiders because of their habit of holding their legs folded beneath them. This habit, and their size and coloration, usually brown and black, suggests a rock, and hence the name. It is a very nice piece of natural camouflage. A thin line runs from the web to the spider. when something strikes the web the tremor is transmitted by means of this line to the spider. Interestingly the movement of the web in the air, as it is stirred by wind, does not activate the spider; similarly if the prey which strikes the web is too small, and thus not worth showing itself for, or too large, and thus beyond its prey range, and perhaps dangerous, it does not reveal itself. On the other hand, should a bird, such as a mindar or parrot, or a small animal, such as a leaf urt or tiny tarsk, become entangled in the net the spider swiftly emerges. It is fully capable of taking such prey. When the blond-haired barbarian stumbled into the web, screaming, trying to tear it away from her  face and hair, the spider did not even reveal itself. I pulled her away from  the net and slapped her to silence. Curious, as she, sobbing, cleaned herself  with leaves and saliva, I located the gentle, swaying strand which marked the location of the spider. It, immobile on the ground, was about a foot in diameter. It did not move until I nudged it with a stick, and it then backed rapidly away.
Explorers of Gor page 294 Swamp Spiders
man sized arachnids (Spider People) which inhabit the swampland near the city of Ar,  they spin Curlon Fiber which is used in the textile mills of Ar When I opened my eyes, I found myself partially adhering to a vast network of broad, elastic strands that formed a structure, perhaps a pasang in width, and through which at numerous points projected the monstrous trees of the swamp forest. I felt the network, or web, tremble, and I struggled to rise,  but found myself unable to gain my feet. My flesh adhered to the adhesive substance of the broad strands. Approaching me, stepping daintily for all its bulk, prancing over the strands, came one of the  Swamp Spiders of Gor. I fastened me eyes on the blue sky,  wanting it to be the last thing I looked upon. I shuddered as the beast paused near me, and I felt the  light stroke of its forelegs, felt the tactile investigation of the sensory hairs of its appendages. I looked at it, and it peered down, with its four pairs of pearly eyes. the monstrous insect bent near me and I caught sight of the mandibles, like curves knives. I tensed  myself for the sudden lateral chopping of those pincerlike jaws. Instead, saliva or some related type of secretion or exudate was being applied to the wed in my vicinity, which loosened its adhesive grip. When freed, I was lifted lightly in the mandibles and carried to the edge of the web, where the spider  seized a hanging strand and scurried downward, placing me on the ground. He then backed away  from me on his eight legs, but never taking the pearly gaze of his several eyes from me.
I will not hurt you. The Spider People do not hurt rational creatures.’
I paused, then, being confident the creature had no love for the men of Ar, answered affirmatively.
‘That is pleasing to me,’ said the insect, ‘for the men of Ar do not behave well towards the Spider People. They hunt us and leave only enough of us alive to spin the Cur-lon Fibre used in the mills of Ar. If they were not rational creatures, we would fight them.
Luckily I did immediately as he had advised, fixing my grip deep in the long black hairs that covered  his thorax, for Nar suddenly raced to a nearby swamp tree and scuttled high into its branches.
Tarnsman of Gor, Pages 80-83

Sting Flies (sometimes called Needle Flies)
Large marsh mosquitoes attracted to the eyes because they are moist, bright objects. Originate in the delta, and similar places. Its sting is extremely painful, but it is usually not dangerous, unless inflicted in great numbers
Vagabonds of Gor, page 161

Termites

Along  the river, of course, many other species of birds may be found, such as  jungle gants, tufted fishers and ring-necked and yellow-legged waders. Also  in the ground zone are varieties of snake, such as the ost and hith, and numerous species of insects. The rock spider has been mentioned, and termites also. Termites, incidentally, are extremely important to the ecology of the forest. In their feeding they break down and destroy the branches and trunks of fallen trees. The termite dust,  thereafter, by the action of bacteria, is reduced to humus, and the humus to nitrogen and mineral materials.
Explorers of Gor page 311-312

Zarlit fly

The zarlit fly is very large, about two feet long, with four large, translucent wings, with a span of about a yard. It has large, padlike feet on which, when it alights, it can rest on the water, or pick its way delicately across the surface. Most of them are purple. Their appearance is rather formidable and can one a nasty turn in the delta, but happily, one soon learns they are harmless, at least to humans."
Vagabonds of Gor  Page 160

"I did see a large, harmless zarlit fly, purple, about two feet long with four translucent wings, spanning
about a yard, humming over the surface of the water, then alighting and, on its padlike feet, daintily
picking its way across the surface."
Raiders of Gor, page 5