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Japanese pavement ant

Tetramorium tsushimae

A species of Pavement ants

Tetramorium tsushimae, the Japanese pavement ant, is a species of ant in the family Formicidae.

General Info About Japanese pavement ant
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Attributes of Japanese pavement ant
Colors
Brown
Black
Habitat
Open land, under stones
Adult Food Sources
Insects, spiders, dead animal matter, seeds, sweet substances (e.g., sap, nectar, aphid honeydew)
Larva Food Source
Digested liquid foods provided by worker ants, insects or insect parts pre-processed by adults, honeydew, aphid secretions, eggs of other insects or small invertebrates
Biting/stinging
The Japanese pavement ant may bite humans actively. Please stay away from it.
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Species Status of Japanese pavement ant
Common
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Distribution Area of Japanese pavement ant
US states, Japan
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Life Cycle of Japanese pavement ant
Egg The egg of japanese pavement ant is tiny, oval, and translucent. It is laid by the queen and often placed in secure locations within the nest. The egg undergoes several molts within its shell.
Larva Upon hatching, the larva of japanese pavement ant is worm-like, legless, and lacks eyes. Feeding voraciously, it grows rapidly, molting several times. Its size increases and it may exhibit different coloration.
Pupal After the final larval molt, japanese pavement ant enters the pupal stage, where it’s immobile and encased in a cocoon. Here, it undergoes significant transformation, developing legs, eyes, antennae, and wings.
Adult Emerging from the pupa, the adult japanese pavement ant'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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Interesting Facts About Japanese pavement ant
Japanese pavement ant has the unique ability to 'hijack' the pheromone signals of other ant species, allowing it to infiltrate and live within foreign colonies undetected.
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Scientific Classification of Japanese pavement ant
Class
Bugs
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Order
Bees
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Family
Ants
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Tips for Finding Japanese pavement ant
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Adult Habitat of Japanese pavement ant
Urban and Suburban Areas, Agricultural and Cultivated Areas, Forests and Woodlands
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Habitat Preferences of Japanese pavement ant Through Different Life Stages
Eggs of japanese pavement ant are typically found in the protected environment of their underground nests, where controlled temperature and humidity levels are maintained by adult worker ants. The larval stages also develop within the nest, tended and fed by workers, in chambers designed for brood-rearing. Pupae usually remain in the nest as well, in similar conditions, until they mature into adults. Searching for these developmental stages involves locating and carefully excavating these colonies, with attention to the soil's moisture levels and structural integrity that the ants prefer. Mature adults, on the other hand, can be found both inside and outside the nest, foraging for food or participating in nuptial flights during mating season, which necessitates searching in varied habitats, from urban areas to forests.
Are Japanese pavement ant harmful?
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Are Japanese pavement ant harmful to humans?

Different kinds of ants cause different troubles to humans. To be sure, compared with other dangerous creatures, common ants are very harmful to humans, and most of them just gather in the courtyard or room to disturb human life.
But there are some dangerous groups. They have strong jaws and sting needles and can bite or sting when under stress. Usually, ants only cause physical damage and the pain caused by formic acid. These discomforts do not even need to be dealt with, and can be recovered quickly. But there are still very few ant stings that can cause allergies and even death. Other ants can pollute the environment, destroy buildings, affect harvests and even spread diseases.
Harmful Effects of Japanese pavement ant
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Nuisance Pests

Japanese pavement ant are known for their persistent invasions of human dwellings, causing a range from mild annoyances to severe issues by infesting food supplies and causing structural damage. Their frequent presence in living spaces can lead to distress due to their bites and the overall challenge in controlling their colonies.

More Effects of Japanese pavement ant

Beneficial Effects of Japanese pavement ant
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Explore how insects help as pollinators, pest predators, and biocontrol agents. From seed dispersal to decomposition, they play vital roles in our ecosystem.
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Seed Dispersal
Decomposers
Seed Dispersal
Japanese pavement ant indirectly assists in the dispersal of seeds through its myrmecochory relationship with many plant species. These insects collect and transport seeds that have elaiosomes—nutrient-rich appendages—back to their nests, where they consume the elaiosomes and dispose of the seeds, often in fertile locations for germination.
Decomposers
Stage
Adults
Larvae
Japanese pavement ant play a crucial role in ecosystem processes, functioning as decomposers at both the adult and larvae stages. They are efficient in breaking down a wide range of organic matter, including dead animals, plant remains, and human-related refuse such as food scraps and garbage. This decomposition process recycles nutrients and supports soil health and fertility. A lesser-known fact about japanese pavement ant is that their digestive systems harbor specific microbes that help in the breakdown of complex materials.
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