| Species | Invertebrate |
|---|---|
| Origin | Central/South America |
| Size Category | Small |
| Scientific Name | Dynastes hercules |
| Category | Beetle |
| Original Purpose | Display/Companion |
| Husbandry Difficulty | Intermediate |
| Social Needs | Very Low |
| Weight Range | 0.03–0.085 kg |
|---|---|
| Lifespan | 1–2 years |
| Juvenile Stage Ends | 12 months |
| Senior Age Threshold | 2 years |
| Exercise Needs | Low - nocturnal; climbs and flies at night; moderate activity |
|---|---|
| Grooming | None - maintain substrate moisture; replace fruit daily |
| Annual Exam Focus | Horn integrity (males), elytra condition, leg grip strength, mite check, weight |
| Routine Care | Maintain 72-78°F; 70-80% humidity; fresh fruit daily; mist substrate; spot clean |
| Condition | Onset Stage | Risk | Hereditary | Screening |
|---|---|---|---|---|
| Mite Infestation | adult | high | No | N/A |
| Bacterial Infection (from substrate) | adult | medium | No | N/A |
| Dehydration | adult | medium | No | N/A |
| Wing Damage | adult | medium | No | N/A |
| Fungal Infection | larval | medium | No | N/A |
| Leg Loss (from fighting) | adult | low | No | N/A |
| Risk Level | Low |
|---|---|
| Ideal BCS | 3/9 |
| Visual Cues | Abdomen should fit under elytra; not protruding excessively; weight appropriate for horn size |
| Daily Activity | 3 minutes |
| Caloric Notes | Fresh fruit daily (banana, apple, beetle jelly); larvae need protein-rich flake soil |
| Litter Size | 30–100 |
|---|---|
| Dystocia Risk | Low |
| CHIC Required Tests | N/A |
| Recommended DNA Tests | N/A |
| Neonatal Weight | 1–3 g |
|---|---|
| Growth Notes | Larval stage 12-18 months (L1-L3); pupation 2-3 months; larvae can reach 100g+; adult stage only 6-12 months |
| Vaccine/Health Schedule | No vaccines; maintain sterile substrate for larvae; avoid overcrowding |
| Temperature | 22-26°C (72-78°F); avoid temperature extremes |
|---|---|
| Humidity | 70-80%; moist substrate; mist regularly; good ventilation |
| UVB Requirement | Not required; nocturnal; 12h ambient light cycle; avoid direct light |
| Diet | Adults: beetle jelly, banana, apple, mango; Larvae: fermented oak/beech leaf flake soil with protein supplements |
| Common Issues | Mites (very common), bacterial infections, dehydration, wing/horn damage, fungal issues in larvae |
| Anxiety Proneness | Very Low |
|---|---|
| Top Triggers | Bright lights during rest, vibrations, handling during day, dry substrate, overcrowding |
| Separation Anxiety Risk | None |
| Calming Interventions | Dark hiding spots, moist substrate, consistent temperature, undisturbed daytime rest |
| Enrichment Needs | Climbing branches, deep substrate for burrowing, varied fruit, cork bark hides, leaf litter |
| Cognitive Dysfunction Risk | Very Low |
| Sociability Score | 2/10 |
| Locomotion | Nocturnal climbing, short flights, burrowing into substrate during day; horn-wrestling (males) |
|---|---|
| Social | Males aggressive toward other males (horn wrestling); tolerant of females; larvae solitary |
| Comfort | Burrowed in substrate during day; feeding on fruit at night; wings tucked under elytra |
| Stress/Displacement | Hissing (stridulation), flipping onto back, refusing food, excessive daytime activity |
| Breed-Specific | Largest beetle species; spectacular horn (males); long larval development; popular in Japanese beetle keeping (kabuto-mushi culture); impressive size |
| Types | Stridulation (hissing/squeaking) when handled or disturbed |
|---|---|
| Frequency Range | 1,000-5,000 Hz |
| Tendency | Low |
| Primary Modality | Chemical (pheromones primary); tactile; stridulation for defense |
| Tail/Body Signals | No tail; horn size indicates male fitness; elytra color changes with humidity (black when wet, olive when dry) |
| Top Problems | Male aggression toward other males, nocturnal escape attempts (flying), substrate destruction |
|---|---|
| Medical Etiology | Lethargy, inability to grip, mite clusters on joints, elytra discoloration |
| Fear/Anxiety Etiology | Stridulation, tucking legs, playing dead, releasing grip and dropping |
| Frustration Etiology | Repeated flying attempts, horn pushing against enclosure walls, nocturnal pacing |
| Learned Behavior | Associates fruit placement with food source; learns enclosure layout; basic spatial memory |
| Cognitive Dysfunction | Very limited; instinct-driven; basic spatial and olfactory learning |
| AI-Trainable Signals | Elytra color (humidity indicator), activity timing (health), horn posture (aggression), grip strength |
|---|---|
| Context-Dependent Vocalizations | Stridulation can be defensive OR mating-related - presence of conspecifics differentiates |
| Interspecies Communication | Tolerates gentle handling; impressive display animal; horn grip can pinch; individual temperament varies |