Pamela's picture


Observed: 27th March 2012 By: PamelaPamela’s reputation in InvertebratesPamela’s reputation in InvertebratesPamela’s reputation in Invertebrates

there are 3 common hoverflies found in Ireland - Helophilus pendulus, Sericomyia silentis and Syrphus ribessi but these don't look like any of these. There are also much smaller ones hovering over the grass on the lawn (not able to photograph yet)

Species interactions

No interactions present.


Pamela's picture


Thanks for this - yes I agree but why have we such a large number?? Others in Belfast, Bangor are reporting swarms in their gardens and the weather is unusually warm here compared to normal march temperatures. I am trying to see if they are different species and it sounds as though some are Eristalis tenax.

ophrys's picture

March flies

The current high temperatures are encouraging a lot of hoverflies to be active. Eristalis pertinax and tenax overwinter to some extent, unlike most species, so they tend to be the common species at this time of year. There will be a few other species on the wing, but not in anything like the numbers of these two Eristalis...that is normal for the time of year.

Try and photograph some of the others - it would be good to see what else you have.

Pamela's picture

hoverflies in Belfast and surrounding areas

Thanks again - will try and photograph some more - colder and not as sunny today,sunday, so not as much activity