Thread subject: Diptera.info :: ID and behaviour query

Posted by Toby on 27-07-2014 23:38
#1

Interested to know why this pregnant fly was passing a droplet every 30secs or so from its abdomen.

Richmond Park, London on railings

farm6.staticflickr.com/5595/14689384416_b2d6389c6b_b.jpg
IMG_0753 fly exuding liquid from abdomen by tobyjug5, on Flickr

Posted by Tony Irwin on 27-07-2014 23:48
#2

Haematobosca stimulans (Muscidae). Adult females feed on cattle blood. This individual may be getting rid of excess water and salts after extracting proteins from the blood for egg maturation.

Edited by Tony Irwin on 27-07-2014 23:57

Posted by Toby on 28-07-2014 01:15
#3

Thanks for info