RPG Exoplanet "Pulchra 3".

Hole-punchers lay 2-4 eggs in tree hollows or simply on particularly leafy branches. Upon hatching, the larvae feed on bark, leaves, and small insects similar to aphids. The larvae have an extremely unpleasant taste to predators and often cause gastrointestinal problems in young predators who mistakenly try to eat them. After reaching a certain weight, they find a dark place to pupate and eventually emerge as adults.

The largest aerial predator of dense forests, adjacent to the "scraper" family, the family "holepuncher" is a dragonfly-like hexapod, with a body length of about 3.5 meters. It has two pairs of massive wings and a front pair of limbs for grasping and tearing flesh. Its powerful jaws are serrated with chitinous teeth, and its tail is hard and stiff, ending in a massive, dense chitinous spine. The tail itself provides most of the holepuncher's length; it is quite fragile and can be defeated by any medium-sized predator or herbivore. It prefers to hide from direct conflict. Holpunchers do not hesitate to consume their prey because any other large land predator can take it from them. Their hunting tactics involve a rapid lunge and dive, aiming to kill the target with a single strike or inflict critical damage with the tail spike, targeting vital organs. They then retreat if the target is near someone or if it is still alive, waiting for the surrounding area to calm down and then devour their prey just as quickly, as they are completely helpless on the ground. Their coloring matches tree bark for camouflage. Ecological role: Solitary

1. Dispersal regulator: It prevents "scrapers" and other predators and herbivores from breeding uncontrollably, eliminating those who become unwary. 2. Food source for scavengers: An entire ecosystem of terrestrial and arboreal scavengers has developed around the "Punchers," which monitor the "Punchers" hunt and consume the remains. 3. Forest Health Indicator: The Hole Puncher, a large and specialized predator, can only exist in an old, untouched ecosystem with giant trees for ambush and an abundance of large prey. 4. "Orderly": He quickly kills sick, old or stray animals, preventing the spread of diseases.

The ecological role of "Scrapers" and their behavior

1. Forest orderlies: They don't disdain carrion. Threats from all sides make them opportunists.
2. Population regulators: They control the populations of medium-sized herbivores and destroy the nests of smaller predators.
3. Prey to maintain balance: The death of adults by larger predators and the death of young by aerial predators is a natural limit to their numbers. Their gregarious behavior is a direct evolutionary response to this pressure.

The "scrapers" family superficially resembles an insectoid reptile. They are most often gray in color. The body length is 2.7 meters, the height at the withers is about 1 meter, and they have twelve limbs. The foremost pair of limbs is large, muscular, and structured like the grasping paws of a praying mantis, with numerous serrations and a spike at the end. Following the foremost pair of limbs are two more pairs of muscular, three-fingered limbs with sharp claws, slightly smaller than the foremost limbs, used for manipulation, such as tearing flesh and separating pieces. Following these are two pairs of hindmost limbs used for walking, which terminate in a large spike at the end. On the shoulder blades of the foremost limbs are a pair of limbs that replicate the structure of the foremost limbs, but are three times larger and point upward in the opposite direction, for grasping branches and firmly carrying food on the back. Eleven yellow eyes are present, four on each side of the head and three on the forehead. The body and head are elongated and reptilian. The spines extend from neck to tail, extending farther than the spine. The tail is long and tipped with a sickle-shaped spike. The head has straight, backward-curving horns, sharp teeth, and sharp mandibles between the upper and lower jaws. The body is covered with a fairly strong, dense, chitinous armor, forming a laminar structure. They move in packs of up to eight individuals and live in trees. "Scrapers" live in dense forests, with numerous large trees. Their young are often eaten by aerial predators and other larger, solitary predators, which also kill adults. Their place in the food chain is approximately that of a medium-sized pack predator. Their main natural predators are large aerial predators that inhabit forests.

The Flammae evomens family, like swans, always lives near water. There are lake, river, sea, and ocean species. They feed on other aerial animals, fish and other aquatic organisms, and land animals, and they also accept carrion. They have short or long muzzles, wide or thin, attack with fangs and sharp teeth or with a long horn, all these characteristics depend on the species and preferred food.

most unusual family on Pulchra 3 is the "Flammae evomens" family, flying cold-blooded predators with the most unusual adaptation for light. The body length is 9,7 meters, the height at the withers is about 3 meters. They are creatures with 2 pairs of massive wings and a lower pair of limbs for walking on the ground, has a long tail and a short chest, have channels in the chest and back that openly collect air, like air intakes. Then the air goes through the channels into a specialized organ called a "chemical heating chamber" with several chambers. Inside the organ, sulfuric acid and pure potassium are stored in separate chambers. Potassium is extracted from the surrounding clay soils and plant ash, and then purified to pure potassium under the action of special organic substances. In this organ, a controlled reaction occurs between sulfuric acid and potassium. Potassium and sulfuric acid are placed in one chamber, where a short-term reaction occurs, after which potassium and sulfuric acid are removed to their separate chambers. The chamber with potassium is also filled with sand to stop the reaction, and the walls of the chamber with sulfuric acid are covered with a silicon-based film. The reaction generates heat and warms the air, which expands and is expelled under high pressure from nozzles located on the sides of the body, providing thrust to accelerate flight or assist with takeoff or sudden lunges. The organ is composed of chitin mixed with sulfur, making it fireproof, but the organ and the entire system require frequent rinsing in water to remove carbon residue. This is facilitated by water sacs, which are adjacent and connected to a "chemical heating chamber" inside the body. They are capable of injecting water into the "chemical heating chamber" for cleaning and cooling. The water is removed through nozzles; the volume of water in the sacs is sufficient for three injections.

Anaerobic decomposers in soils, silts, and marshes produce H₂S and PH₃.

These gases rise into the atmosphere, creating background concentrations.

Plants, fungi, and many marine organisms have mechanisms for absorbing them directly from the air and water.

With the help of specialized enzymes, sulfur and phosphorus from these gases are incorporated into the construction of biopolymers: modified chitin, bone tissue, keratin, and membrane phospholipids.

Thus, the biosphere acts as a giant "pump," constantly extracting H₂S and PH₃ from the atmosphere and "burying" them in biomass.

After the death of organisms, some sulfur and phosphorus are released again as gases, while some remains in sediment, forming phosphate and sulfide biogenic rocks (a type of "mineral" called Pulchra 3).

Balance: The observed 0.3% H₂S and 0.2% PH₃ are not a static toxic cocktail, but a dynamic equilibrium between the rate of their production by decomposers and the rate of uptake by the rest of the biosphere. This equilibrium is shifted toward slightly higher levels than on Earth (where it is practically zero).

Instead of a brain and spinal cord, complex organisms on Pulchra 3 have a thick "brain column," which is essentially a brain extended to the length of almost the entire spine, performing all the functions of the brain and spinal cord combined. Closer to the head is the "cephalic node," which is responsible for sensory perception: smell, hearing, vision, and taste recognition. "brain column" (Cerebrospinal Cord):

Function: All higher nervous activity occurs here—memory, learning, decision-making, coordination of holistic behavior, emotions (or their analogs). It's not just a "conductor," but a distributed processor. Different types of memory (motor, spatial, social) are likely distributed across different sections of the cord.

Protection: It's extremely well protected—not only by a bony/chitinous spine, but also by hydraulic, fatty, or gas layers for shock absorption.

"cephalic node" (Sensory Integration Center):

Function: This isn't a "brain" as we understand it, but a super-processor for data input. It receives raw signals from the senses (eyes, ears/tympanic organs, olfactory receptors, taste buds), carries out their initial, incredibly complex processing (for example, immediately creating a three-dimensional sound or olfactory map), and transmits ready-made, purified images and models to the “brain column” for awareness and reaction.

Metabolic Cost: Creating and maintaining multiple limbs made of ultra-strong chitin requires a lot of phosphorus and sulfur. But the atmosphere of Pulchra 3 provides a constant source of these nutrients. Organisms literally "filter" the air for building materials. This removes the cost constraints of such complex structures. · Respiration: High oxygen levels (25%) support the intense metabolism required for the movement of numerous muscles.

Hexapodium (six-legged) is a basic body plan supplemented by organisms with a large number of limbs (up to 12). Stability on diverse terrain: Low mountains, abundant archipelagos, wet, possibly swampy, or overgrown with giant vegetation soils—all require excellent stability and maneuverability. Six points of support (and even more so 8 or 12) provide a significant advantage over tetrapods (four-legged creatures), especially for large or massive forms. Strength of "bioplastic": Chitin, reinforced with phosphate-sulfate bridges, is a very strong but likely less flexible material than collagen/bone in terrestrial vertebrates. Creating a long, flexible spine and two pairs of complexly articulated limbs from such a material may have been evolutionarily more difficult. Instead, it is more efficient to distribute the load and movement across a larger number of simpler and stronger segments and limbs. This is the "workhorse" archetype—reliable, stable, and energy-efficient on complex terrain. Ecological and functional niches: Hexapods (6 limbs): The "standard" for the planet. Analogous to terrestrial mammals and birds in terms of distribution. Two limbs can be specialized for manipulation (grasping, foraging, construction), four for locomotion (running, walking). Or all six can be specialized for walking, with manipulation performed by the mouthparts/cephalothoracic appendages. Ideal for a stable tripodal gait (always three points of support when moving). Octopods and Dodecapods (8-12 limbs): Specialists. Giant forms (megafauna): To support colossal mass (elephant-like creatures, "living cranes"), additional limbs are necessary. Weight distribution across 8 or 12 columnar legs. · Dwellers of soft soils and swamps: Multiple wide, flat limbs prevent sinking (similar to snowshoes or mangrove crabs). · Climbers/Mountain Climbers: In forests of chitinous "trees" or on the cliffs of archipelagos, creatures with 12 prehensile limbs would be unrivaled climbers.

Organisms on Pulchra 3 use not standard chitin, but modified chitin with the addition of phosphate or sulfate groups, or both at once (though this is rare), which form covalent bridges between chains. Phosphorus and sulfur are also found in the bones, chitin, keratin of organisms, and tree bark. Chitin, reinforced by phosphate and sulfate bonds, is more than a structural material. It has:

Recycling mechanism: Its construction process itself removes sulfur and phosphorus oxides from metabolism.

Strength: This "reinforced chitin" is stronger than steel in relation to its weight, which explains the possibility of the existence of huge and durable structures in organisms (huge trees, huge shells) even in conditions of low gravity.

Fire resistance: Sulfur and phosphorus compounds can make this chitin difficult to burn, which is very important in an atmosphere with 25% oxygen (where everything should burn more easily).

Consequences for food chains:

Deficiency of "free" phosphorus and sulfur: The Beautiful 3 would be toxic to terrestrial organisms not only because of the atmosphere but also because of their diet. All major biomolecules contain "foreign" bonds. Local organisms have special enzymes to break them down.

Bones and shells as rich deposits: Faunae Bellechra 3, the skeletons and shells of dead animals are not just bones, but concentrated deposits of vital elements.

The exoplanet "Pulchra 3" is larger than Earth, with a radius of 7,634 kilometers and gravity roughly equivalent to Earth's. It has a predominantly monsoonal subtropical climate, three separate continents of roughly equal size, and a fairly large number of large archipelagos distant from the continents. The atmosphere is 71% nitrogen, 25% oxygen, 2% carbon dioxide, 1% argon, 0.3% hydrogen sulfide, and 0.2% phosphine. The biological development of this planet is comparable to that of Earth's Paleogene period in terms of organismal complexity, but surpasses it in species diversity, richness, and biomass. Mountains and ridges are low-lying and small. Pulchra 3 has very few minerals, namely heavy metals, and light metals outnumber heavy metals and are evenly distributed in particles throughout the planet's surface. Pulchra 3 formed in a region of the protoplanetary disk depleted in heavy elements. Plate tectonics on Pulchra 3 are very weak, making it very stable. Pulchra 3 is very poor in heavy metals, but its fauna is rich and abundant, and the soil is fertile and rich. The star around which Pulchra 3 orbits is a quiet orange dwarf (K-type).

Common features across the entire planet:

Color scheme: Blueish, violet, crimson, and silvery-gray tones dominate, rather than green. This is due to different photosynthetic pigments optimized for the star's spectrum and using sulfur. Bright green is a rarity. Material: Everything appears to be made of bioplastic, ceramics, and polished stone. The bark, leaves, and stems are hard, glossy, or matte, but not "soft" or "woody." They are chitin, reinforced with phosphates and sulfates. Smell: The air has a light, constant scent of sulfur, ozone, and spicy, complex floral aromas. Humidity: Fog, evaporation, and frequent warm rains are everywhere. Silence and Suddenness: The dense atmosphere muffles sounds, but can be broken by the sharp pops and hissing roars of the jet engines of the Flammae evomens.