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Agabus congener

Agabus congener

A species of Agabus

Agabus congener is a species of predatory beetle native to the Palearctic (including Europe) and the Near East. In Europe, it is only found in Andorra, Austria, Belarus, Belgium, Great Britain including Shetland, Orkney, Hebrides and Isle of Man, Bulgaria, Croatia, the Czech Republic, mainland Denmark, Estonia, Finland, mainland France, Germany, mainland Greece, the Republic of Ireland, mainland Italy, Kaliningrad, Latvia, Lithuania, Northern Ireland, North Macedonia, mainland Norway, Poland, Russia, Sardinia, Slovakia, mainland Spain, Sweden, Switzerland, the Netherlands and Ukraine. Agabus congener can be found in small acidic ponds or mesotrophic fens. This species was identified in samples of organic sediment recovered along with mammoth bones which were excavated in Niederweningen, Switzerland. The presence of this and many other insect species indicates that the sediments formed in a reedy, acidic swamp with shallow mossy pools.

General Info About Agabus congener
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Attributes of Agabus congener
Colors
Brown
Black
Habitat
Water bodies; cutover bog; interdrumlin fen
Adult Food Sources
Aquatic insects, larvae of other species, small fish, tadpoles, worms
Larva Food Source
Aquatic larvae, small fish, tadpoles, small invertebrates, other aquatic insects
Biting/stinging
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
Predatory
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Chewing mouthparts
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Species Status of Agabus congener
Stable population; common
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Distribution Area of Agabus congener
Europe
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Life Cycle of Agabus congener
Egg Upon hatching, the egg releases a larva, which is markedly different from the adult agabus congener. The larva is elongated, lacks wings, and often has a distinct coloration suited for its juvenile environment.
Larva The larva is voracious, growing rapidly as it molts several times. Each instar (intermediate larval stage) increases in size, may change color, and gradually develops adult features, such as the formation of wing pads.
Pupal The agabus congener enters a quiescent state as a pupa, encapsulated within a protective case. This is a transformative phase, where tissues reorganize and differentiate, as it prepares for adulthood.
Adult Emerging from the pupa, the adult agabus congener'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 Agabus congener
Agabus congener can create a 'physical gill,' trapping a thin layer of air against their abdomens that allows them to stay underwater indefinitely.
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Scientific Classification of Agabus congener
Tips for Finding Agabus congener
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Youth Habitat of Agabus congener
Freshwater Habitats
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Adult Habitat of Agabus congener
Freshwater Habitats
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When is the Best Time to Observe Agabus congener
The best time to find agabus congener is during the warmer months as they are more active and easier to spot during their mating season.
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What is the Best Weather to Observe Agabus congener
During warm and overcast days with calm water bodies, it is more suitable to find agabus congener as they come to the surface more frequently.
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How and Where Can You Find Agabus congener at Different Life Stages
Larva Agabus congener larvae are aquatic and predatory, often found in freshwater habitats like ponds, and slow-moving streams. They can be found by gently sweeping a fine mesh net through the water and examining the contents for the distinctive predatory larvae.
Pupal Agabus congener pupae are also aquatic and usually attach themselves to submerged objects. They can be located by carefully inspecting under rocks, aquatic plants, or other submerged debris in calm sections of their habitat.
Adult Agabus congener adults are strong swimmers and flyers. They can be found at the water's edge, especially at night using a light source or by setting up light traps as adults are attracted to lights. During the day, they can be found hiding under debris, stones, or vegetation near the water.
Are Agabus congener harmful?
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Beneficial Effects of Agabus congener
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Predators of Pests
Predators of Pests
Stage
Adults, Larvae
Agabus congener is a voracious aquatic predator, inhabiting various freshwater habitats. Both larvae and adults are known to actively hunt and feed on various aquatic organisms, including the larvae of other insects and small fish. Agabus congener employs a stealthy approach, using its hydrodynamic body to dart towards unsuspecting prey, grasping them with sharp mandibles. This insect's role in the ecosystem helps keep the populations of aquatic pests in check.
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