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Calathus micropterus

Calathus micropterus

Calathus micropterus

A species of Calathus

Calathus micropterus is a species of ground beetle from the Platyninae subfamily that can be found everywhere in Europe except for Albania, Andorra, Greece, Hungary, Moldova, Monaco, Portugal, San Marino, Spain, Vatican City, all states of former Yugoslavia (except Croatia and Bosnia and Herzegovina), and various islands.

General Info About Calathus micropterus
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Attributes of Calathus micropterus
Habitat
Acid wood; upland heath
Adult Food Sources
Insects, spiders, worms, small snails, other arthropods
Larva Food Source
Small insects, eggs of other arthropods, other small invertebrates, soft-bodied pest larvae, aphids
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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Species Status of Calathus micropterus
Common
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Distribution Area of Calathus micropterus
United States
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Life Cycle of Calathus micropterus
Egg Eggs are often laid in clusters, being small and oval. The embryonic calathus micropterus develops inside, with little resemblance to adults.
Larva After hatching, larvae resemble segmented worms with a distinct head and jaws for feeding. They lack wings and have a voracious appetite, growing rapidly.
Pupal During pupation, the calathus micropterus is encased and immobile. This stage is a transformation period, where tissue breakdown and reorganization occur.
Adult Emerging from the pupa, the adult calathus micropterus’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 Calathus micropterus Larvae
Birds, rodents, arachnids, larger predatory insects
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Scientific Classification of Calathus micropterus
Tips for Finding Calathus micropterus
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Youth Habitat of Calathus micropterus
Forests and Woodlands, Grasslands and Prairies
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Habitat Preferences of Calathus micropterus Through Different Life Stages
The eggs of calathus micropterus are typically laid and develop in the moist soil of wooded areas, where larvae subsequently hatch and continue their development, feeding on other invertebrates. As they mature into pupae, these are often found slightly deeper in the soil to provide protection during this vulnerable stage. Adult calathus micropterus primarily reside on the forest floor beneath leaf litter and decaying wood, where they hunt for prey and can be observed upon careful examination of such debris. To find calathus micropterus at different stages, one should search the various strata of woodland ground cover, disturbing the topsoil and leaf litter to reveal the presence of larvae and adults respectively.
Are Calathus micropterus harmful?
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Beneficial Effects of Calathus micropterus
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Predators of Pests
Predators of Pests
Stage
Adults, Larvae
Diets
Caterpillars, Aphids
Calathus micropterus is an active hunter, both as an adult and as a larva. It typically preys on caterpillars and aphids, favoring such pests due to their abundance and nutritional value. The method of predation involves calathus micropterus using its well-adapted mouthparts to seize and consume prey, nourishing itself and ensuring survival.
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