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Large marsh horsefly

Large marsh horsefly

Tabanus autumnalis

A species of True horse flies, Also known as Autumnal breeze fly

Tabanus autumnalis, the large marsh horsefly, is a medium-sized species of biting horse-fly. It is somewhat scarce compared to T. bromius and T. bovinus. This species shows slightly more of a preference for coastal marsh than some of the other European Tabanus, sometime even found in saltmashes. Wing length is 13–16 mm and about 16–22 mm in body length.

Bite Animals
Bite Animals
Cause Disease in Humans
Pathogenic
Does Large marsh horsefly consume human blood?
Hematophagy
General Info About Large marsh horsefly
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Attributes of Large marsh horsefly
Colors
Brown
Black
Cream
Habitat
Swampy lowland; moor; coastal marsh; wet grassland; marshy area
Adult Food Sources
Blood (mainly females), nectar, plant secretions, honeydew, juices from decaying fruit
Larva Food Source
Small insects, other arthropod larvae, annelids, amphibian larvae, organic detritus
Biting/stinging
The Large marsh horsefly may bite humans actively. Please stay away from it.
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Biting animal or pet
Not reported
Mouthparts Type
Cutting-sponging mouthparts
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Species Status of Large marsh horsefly
Rather uncommon
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Distribution Area of Large marsh horsefly
Norway
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Predators of Adult Large marsh horsefly
Birds, dragonflies, horse-guard wasps, spiders, mantises
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Interesting Facts About Large marsh horsefly
Large marsh horsefly has the unique ability to regulate its internal temperature by shivering, much like mammals do to keep warm.
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Scientific Classification of Large marsh horsefly
Tips for Finding Large marsh horsefly
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Youth Habitat of Large marsh horsefly
Freshwater Habitats
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Habitat Preferences of Large marsh horsefly Through Different Life Stages
The eggs of large marsh horsefly are usually found in batches on vegetation near water bodies like marshes or ponds. Larvae prefer moist soil or mud, primarily in marshy areas near their egg-laying sites. For pupation, larvae migrate to drier adjacent soil or leaf litter. Adults of large marsh horsefly often inhabit areas with high humidity like wooded regions, and are commonly seen flying in sunny spots that offer access to mammalian hosts for blood meals. To find these stages, one should carefully examine the nearby vegetation for eggs, sift through wet soils for larvae, and search the soil surface and under detritus for pupae, while adult large marsh horsefly can be sighted in clearings or trails within or near wooded areas.
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When is the Best Time to Observe Large marsh horsefly
Adult large marsh horsefly are most active during the warmer months, particularly on calm, sunny days. They are diurnal creatures, so the best time to find them is during daylight hours.
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What is the Best Weather to Observe Large marsh horsefly
Adult large marsh horsefly are more active in warm, sunny weather, but they avoid strong winds and rain. Overcast days with high humidity can also be suitable for finding large marsh horsefly.
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How and Where Can You Find Large marsh horsefly at Different Life Stages
Larva Large marsh horsefly larvae are found in moist environments such as wet soil, marshes, or near bodies of water. Look for them by carefully digging in mud or inspecting the edges of ponds and streams.
Pupal Large marsh horsefly pupae are typically located in drier places than the larval habitats, but still close to water. Search for pupae in vegetation or soil near the larval habitats.
Adult Large marsh horsefly adults can often be found in open spaces, such as fields and along trails, where they hunt for blood meals. They are attracted to large moving objects, so wearing dark clothing and moving through their habitat may draw them out. Alternatively, you can use decoy traps with carbon dioxide release to attract large marsh horsefly adults.
Are Large marsh horsefly harmful?
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Harmful Effects of Large marsh horsefly
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Bite Animals

Large marsh horsefly engages in biting primarily for blood-feeding which provides the protein necessary for the development of eggs. Biting behavior occurs during the adult stage, with females requiring a blood meal for reproduction. While males do not bite, females can be persistent, especially in sunny, warm weather.

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Cause Disease in Humans

Large marsh horsefly can transmit pathogens to humans through their bites, potentially causing diseases like loiasis. These bites often result in immediate pain, swelling, and redness, with a risk of secondary infection. In rarer cases, serious allergic reactions or blood-borne diseases could occur. Long-term effects typically arise from the pathogens transmitted rather than the bite itself.

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Does Large marsh horsefly consume human blood?

Large marsh horsefly females feed on blood from various hosts, including humans and livestock, to mature their eggs. Their bite can be painful, leading to irritation and potential disease transmission. The ingestion of blood is critical for their reproductive cycle, impacting hosts through blood loss and the spread of pathogens.

More Effects of Large marsh horsefly

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