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Caligula japonica

Caligula japonica

Saturnia japonica

A species of Emperor moths

Caligula japonica, the Japanese giant silkworm, is a moth of the family Saturniidae. It was described by Frederic Moore in 1872. It is found in eastern Asia, including China, Korea, Japan and Russia. The larvae feed on various plants, including Salix, Fagus, Quercus and Juglans.

General Info About Caligula japonica
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Attributes of Caligula japonica
Habitat
Forest, woods, flatlands, mountain
Larva Food Source
Salix (willow) leaves, fagus (beech) leaves, quercus (oak) leaves, rubus (bramble) leaves, prunus (cherry) leaves
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
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Distribution Area of Caligula japonica
Eastern Asia, Russia
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Life Cycle of Caligula japonica
Egg The egg stage marks the beginning of the caligula japonica's life cycle. Small, spherical, and often laid on host plants, the eggs are colored to blend with the foliage and protect them from predators.
Larva After hatching, the larva, or caterpillar, enters a phase of rapid growth. It has a soft, elongated body with distinct color patterns and spends most of its time eating leaves voraciously to accumulate energy.
Pupal The larva transforms into a pupa, encased within a cocoon. During this stage, the caligula japonica undergoes significant transformation, reshaping its body structures in anticipation of adulthood. The cocoon may display camouflage.
Adult Emerging from the pupa, the adult caligula japonica's development is marked by the presence of wings and functional reproductive organs. The body is fully formed and hardened, and the adult is mobile, focusing on reproduction.
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Predators of Caligula japonica Larvae
Birds, rodents, wasps
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Scientific Classification of Caligula japonica
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Youth Habitat of Caligula japonica
Forests and Woodlands
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Habitat Preferences of Caligula japonica Through Different Life Stages
The eggs of caligula japonica are laid on the leaves of host plants, commonly found in green, dense vegetation or in wooded habitats. As caterpillars, they primarily inhabit the foliage of various trees, feeding and growing among leaves where they remain camouflaged. Pupae usually form in secluded areas like the underside of leaves or in the litter on the ground, blending with their surroundings for protection. Adults are commonly found nearby flowering plants, especially at night, as they are attracted to the flowers from which they feed on nectar. To locate these stages, researchers would scour the host plants for eggs and caterpillars, sift through leaf litter for pupae, and visit flowering plants after dusk to observe the adult moths.
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When is the Best Time to Observe Caligula japonica
The suitable time to find adult caligula japonica is at night when they are the most active, while their eggs, larvae, and pupae can be searched for during the day.
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What is the Best Weather to Observe Caligula japonica
The search for caligula japonica should ideally be conducted in dry weather conditions, preferably not immediately after rain, as this may impact their activity levels and visibility.
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How and Where Can You Find Caligula japonica at Different Life Stages
Egg Caligula japonica eggs can be located on the leaves of host plants. Carefully inspect the undersides of leaves for small rounded or oval eggs that are often laid in clusters.
Larva Caligula japonica caterpillars are larger and visible as they feed on the host plants. Look for signs of feeding damage on leaves and then for the caterpillars themselves, which are usually vividly colored and may be found alone or in groups.
Pupal Caligula japonica pupae may be located in the leaf litter or soil near the host plants, or attached to branches or trunks. Search carefully through likely materials or gently tap branches to help reveal them.
Adult Caligula japonica moths are nocturnal and can be found using light traps. They may also be attracted to fermented bait set up on tree trunks. During the day, adult caligula japonica can sometimes be located resting on tree trunks or vegetation in a camouflaged state.
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Harmful Effects of Caligula japonica
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Hurt Plant

The caligula japonica is known to cause damage to plants by chewing on plant tissues, particularly the leaves. Plants from the Rosaceae and Salicaceae families, including Prunus, Malus, and Salix species, are susceptible. This feeding activity results in defoliation and compromised photosynthesis, which can lead to stunted growth and reduced fruit yield.

More Effects of Caligula japonica

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