orchid_b's picture

Helophilus trivittatus

Observed: 1st September 2012 By: orchid_borchid_b’s reputation in Invertebratesorchid_b’s reputation in Invertebratesorchid_b’s reputation in Invertebratesorchid_b’s reputation in Invertebrates
Helophilus trivittatus
Helophilus trivittatus2

These are quite tough both to i/d and photograph - I defo need a better camera having looked at Stephen Falk's photos: http://www.flickr.com/photos/63075200@N07/collections/72157629600153789/

Species interactions

No interactions present.


orchid_b's picture

Ok thanks. So I guess the

Ok thanks. So I guess the much-vaunted yellow face isn't a reliable feature - there seems to be just a teeny tiny bit of yellow on centre top of face just above the antennae on all the I-spot photos. The bright and clear lemony abdomen markings seem to be a good feature though. I'll add a pic where you can see this and that the rest of the face is white.

Jamie from Briantspuddle

jeremyr's picture


for this species the long lemony abdomen and its large size is usually enough. Generally though you'd want a view of the hind tibia, which often isn't that difficult to photograph. For pendulus it's at least half-pale though usually two-thirds pale. If it's only one-third pale then it would be hybridus or the bigger and brighter trivittatus


latest pics and diptera videos

ophrys's picture


The yellow face is the most reliable feature! Yellow just means that the face does not have a dark central stripe. The actual colour of the face is pale, with a thin yellow stripe from below the antennae running down the middle of the face (where that would be dark on pendulus or hybridus).


My Flickr photos...


orchid_b's picture

Thanks for explaining what

Thanks for explaining what yellow means. I wish some of the books were as clear!

Jamie from Briantspuddle