Thread subject: Diptera.info :: Hover fly from Hong Kong: Eristalinus laetus?
Posted by chickenold on 11-11-2012 16:11
#1
Photo taken yesterday. Body length slightly less than 10mm.
Thanks!
Posted by chickenold on 11-11-2012 16:12
#2
Lateral view:
Posted by Gerard Pennards on 16-11-2012 23:18
#3
Hmmmm, male Eristalinus tarsalis??
Greetings
Posted by chickenold on 17-11-2012 02:07
#4
Thanks Gerard!
E. tarsalis was my first guess, but it seems that the size is smaller and the pattern on the abdomen is somehow different, according to the info in my hand.
Could you advise the major difference between the two species?
Posted by Gerard Pennards on 18-11-2012 00:53
#5
I have a (non published) key of oriental Eristalinus and if I use that I end up with a male Eristalinus dives (Walker 1849), especially because the squamae (part of the wing) are dark brownish black.
Greetings
Posted by chickenold on 18-11-2012 02:55
#6
Thanks again!
A female individual of similar size was found yesterday in the same location.
Not sure if it is the same species, but there was usually only one blackish Eristalinus sp. in the locality dominated by E. arvorum, E. quinquestriatus and E. obliquus.