Hazard near the water, invertebrate
Horseflies
- Records in GBIF
- 245
- Fishing districts near where it occurs
- 1 253
- Most sightings
- July

About the species Horseflies
About the species
Large biting flies. They are most active on hot, windless days near water and on meadows.
Where to find it by the water
Water banks and damp meadows, especially in summer and in warm, windless weather.
What this means for anglers
In summer have repellent ready during the day and wear long-sleeved clothing.
How to protect yourself
They sting painfully, especially in summer around midday. Light-coloured long-sleeved clothing and repellent help.
When it is observed
Records by month in the areas around the fishing districts (GBIF).
- 0Jan
- 0Feb
- 0Mar
- 0Apr
- 19May
- 73June
- 108July
- 39Aug
- 6Sep
- 0Oct
- 0Nov
- 0Dec
In November the species is observed less than in the main season. Most records are from July.
The records come from people's observations and also reflect when and where observers move around. They are not a measurement of numbers or a guarantee of an encounter.
Where it was recorded
Fishing districts around which a record of this species exists. Sorted by number of records.
- Dunaj č. 1 37
- Hron č. 1 37
- Ipeľ č. 1 37
- Obidský kanál 37
- Paríž 37
- Perec č. 1 37
- VN Svodín 37
- Kamenický kanál 37
- OR Berek č. 1 37
- OR Berek č. 2 37
- OR Berek č. 3 37
- OR Berek č. 4 37
- Feld 33
- Prukse 33
- Kanál Malina č. 1 33
- Morava č. 3 33
- Morava č. 1 33
- Morava č. 2 33
- VN Centnúz 33
- Zohorský kanál č. 1 33
- Záhorský kanál 33
- Zohorský kanál č. 2 33
- Dunaj č. 4 – Devínske rameno 33
- Špek 33
- Bobrie jazero 33
- Jazero Čierny Feld 33
- SR Obloz 33
- Prepadlina Osmička 33
- Lábske jazero 33
- Štrkovisko Malé Axi 33
- Požiarna nádrž 33
- Rašelinisko Záhorská ves 33
- Rudava kanál 33
- Kruh 33
- Junkov Dolec 33
- Habán 33
1,253 fishing districts in total, 36 shown. The number next to a fishing district is the number of records around it. Show on map
More species from the group insects, crayfish and mussels
Photo credits
- Horseflies: Photo: Bruce Marlin, CC BY-SA 2.5, Wikimedia Commons
- Dragonflies: Photo: Paul Balfe, CC BY 2.0, Wikimedia Commons
- Mayflies: Photo: Richard Bartz, Munich aka Makro Freak Image:MFB.jpg, CC BY-SA 2.5, Wikimedia Commons
- Caddisflies: Photo: Bruce Marlin, CC BY-SA 2.5, Wikimedia Commons
- Mosquitoes: Photo: Katja Schulz from Washington, D. C., USA, CC BY 2.0, Wikimedia Commons
- Castor bean tick: Photo: W.alter, CC BY-SA 4.0, Wikimedia Commons
- Noble crayfish: Photo: Dragon187, CC BY-SA 3.0, Wikimedia Commons
The advice is general and does not replace the instructions of a doctor, rescuers, the site manager or the fishing regulations. Do not disturb protected species or dismantle their shelters.





