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18-spot ladybird

18-spot ladybird

Myrrha octodecimguttata

A species of Myrrha

Embellishing the landscape with a striking visual contrast, 18-spot ladybird is adorned with a spectacle of spots against its rounded elytra, marking a vivid pattern commonly considered aphidophagous. As it transitions from voracious larvae that consume scale insects to an adult with a diet comprising mainly aphids, it is an effective agent in the biological control of these garden pests. With lifespan stages evolving in distinct habitats, the creature ensures its offspring's survival by laying eggs in the proximity of ample prey, securing a food source that is essential during the larval stage.

General Info About 18-spot ladybird
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Attributes of 18-spot ladybird
Colors
Black
Red
Cream
Habitat
Scots pine; pine forest; mixed forest; high bog
Adult Food Sources
Aphids, scale insects, small arthropods, pollen, nectar
Larva Food Source
Aphids, small arthropod eggs, mites, scale insects, insect larvae
Non-poisonous
Not reported
Borer
Not reported
Pollinator
The 18-spot ladybird is often found near the corolla, where its fluffy hairs easily pick up pollen, assisting in the pollination of the plant.
Pest-Eating Predatory
The 18-spot ladybird preys on common garden pests such as: aphids, whiteflies, thrips, spider mites, etc. It is a popular insect among gardeners.
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Distribution Area of 18-spot ladybird
Europe, North Africa. European Russia, the Caucasus, Siberia, the Russian Far East, Belarus, Ukraine, Transcaucasia, Kazakhstan, Western Asia, Mongolia.
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Life Cycle of 18-spot ladybird
Egg The eggs of the 18-spot ladybird are laid in clusters or rows on host plants. They are small, oval, and may vary in color. Incubation times vary, but once hatched, larval development begins.
Larva The larva of the 18-spot ladybird is elongated with distinct segmentation. Eating voraciously, it molts several times, growing larger with each stage. Color and patterning often change with these molts.
Pupal After reaching sufficient size, the larva forms a pupa. This stage is motionless and can be attached to a substrate or in leaf litter. The 18-spot ladybird undergoes transformation within the protective casing.
Adult Emerging from the pupa, the adult 18-spot ladybird sports a hardened exoskeleton with vibrant colors for camouflage or warning. It is capable of flight, feeding on pollen, nectar, or aphids, and focuses on reproduction.
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Predators of 18-spot ladybird Larvae
Araneae (spiders), hymenoptera (parasitoid wasps), reptilia (reptiles), aves (birds)
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Predators of Adult 18-spot ladybird
Araneae (spiders), hymenoptera (parasitoid wasps), aves (birds), mammalia (small mammals like rodents)
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Scientific Classification of 18-spot ladybird
Class
Bugs
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Order
Beetles
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Family
Ladybugs
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Genus
Myrrha
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Tips for Finding 18-spot ladybird
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Youth Habitat of 18-spot ladybird
Forests and Woodlands, Agricultural and Cultivated Areas
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Adult Habitat of 18-spot ladybird
Forests and Woodlands, Grasslands and Prairies, Agricultural and Cultivated Areas, Urban and Suburban Areas
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How Can You Attract 18-spot ladybird
For adults, a trap for 18-spot ladybird may include aphids or sweet substances to lure them, as they are attracted to these as sources of food.
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Habitat Preferences of 18-spot ladybird Through Different Life Stages
The eggs of 18-spot ladybird are often found on the underside of leaves, especially where aphids, their primary food source, are present. Larvae typically roam plant surfaces where aphid populations are high, taking advantage of the ample food supply. Pupae generally attach themselves to the underside of leaves or other hidden areas on plants. Adult 18-spot ladybird are mobile and can be found on various plants, where they continue to prey on aphids or seek out pollen. To search for these stages, one would explore garden areas, agricultural fields, or anywhere their food sources are abundant, meticulously checking the undersides of plant leaves and nearby foliage for the presence of these insects at their various life stages.
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How and Where Can You Find 18-spot ladybird at Different Life Stages
Egg 18-spot ladybird eggs are usually laid in clusters on the undersides of leaves, especially on plants infested with aphids. To find them, inspect the leaves of potential host plants.
Larva 18-spot ladybird larvae can be found on plants where there are aphids. They are larger than the eggs and are often observed actively moving along the stems and leaves in search of prey.
Pupal The 18-spot ladybird pupae attach themselves to a leaf or other structure in the plant. They can be found by carefully examining the plants where larvae are present, looking for the immobile, shell-like stage attached to leaves or stems.
Adult Adult 18-spot ladybird are often found on or near plants that are infested with aphids, their primary food source. Searching for them involves inspecting such plants, looking on both the leaves and the flowers where they might be feeding or resting.
Are 18-spot ladybird harmful?
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Beneficial Effects of 18-spot ladybird
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Predators of Pests
Predators of Pests
Stage
Adults, Larvae
Diets
Aphids, Scale Insects
18-spot ladybird is highly valued for its appetite for garden pests. During its larval and adult stages, it actively hunts and consumes aphids and scale insects, serving the dual purpose of self-feeding and supplying food for its offspring. An interesting fact about 18-spot ladybird is that they can consume hundreds of aphids in their lifespan, providing significant control of pest populations.
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