Terrestrial · Terrestrial

Flying Ants

Lasius niger
Flying Ants — Adult
Size
4–5mm
Hook size
#20–18
Hatch window
Season July–SeptemberPeak time 12:00–18:00
Water temperature
20° peak
14°28°
Hatches from 14°C, peaking at 20°C, tailing off by 28°C.
How fish feed on it

Not a fly to build a season round — most days there is no ant on the water, and a box full of them is wasted space until one specific afternoon arrives. What you're waiting for is a hot, humid, more-or-less still July or August afternoon, often right on the tail of a spell of rain: those are the conditions that trigger every ant colony for miles to launch its nuptial flight at once, and it can happen on a Tuesday as easily as a Saturday. When it does, the fish know before you do — a day of steady, ordinary rises can turn into something close to a frenzy within minutes, with fish taking that ignored everything else you'd shown them all morning. Keep one or two patterns in reserve for exactly that window; the rest of the year they just sit there.

Flies that imitate this
Black Ant
Black Ant
Flying Ant
Flying Ant
Foam Ant
Foam Ant
McMurray Ant
McMurray Ant
Parachute Ant
Parachute Ant
Ecology
Rivers & stillwaterLimestone loughsAlpine riversTolerates poor water
Where you'll find this
  • British IslesPresent
  • IberiaPresent
  • The AlpsPresent
  • ScandinaviaPresent
  • Continental EuropePresent
  • Atlantic fringePresent
  • North America — WestPresent
  • North America — EastPresent
  • East AsiaPresent
  • New ZealandPresent
  • PatagoniaPresent
Present throughout
About the genus Lasius

The black garden ant ( Lasius niger ), also known as the common black ant, is a formicine ant, the type species of the subgenus Lasius , found all over Europe and in some parts of North America, South America, Asia and Australasia. The European species was split into two species; L. niger is found in open areas, while L. platythorax is found in forest habitats. It is monogynous, meaning colonies have a single queen.