Thread subject: Diptera.info :: Diasemopsis (alt. Chaetodiopsis) meigenii, Zambia
Posted by Will van Niekerk on 20-01-2012 19:05
#1
Location: Near Chunga, Kafue National Park, Central Province, Zambia
Habitat: Riverine scrub
Date: 15.10.2011
Size: 7-9mm (length, excluding wings)
Recognising that the lack of specimens may cause difficulties, hoping someone can nevertheless confirm/suggest alternative genus.
Edited by Will van Niekerk on 21-01-2012 23:50
Posted by Will van Niekerk on 20-01-2012 19:06
#2
Second image:
Posted by Jan Willem on 21-01-2012 23:11
#3
I asked a diopsid specialist to have a look at these pictures. He replied immediately with the name of the species:
Diasemopsis meigenii (Westwood 1837). Also placed in it's own genus
Chaetodiopsis.
Posted by Will van Niekerk on 21-01-2012 23:48
#4
Awesome, thanks!
I'll just change the title and upload to the gallery!
Posted by John Carr on 22-01-2012 00:50
#5
I like the view from the front because it shows in a photograph what I saw in an illustration.
The Evolution of Insects by Grimaldi and Engel has on page 30 diagrams of the heads of
Diopsis and
Plagiocephalus. Labels show how two superficially similar stalk-eyes flies became stalk-eyed by modifying different structures. In Diopsidae the antennae and some orbital bristles are carried out with the eyes. It's a strange condition to evolve even twice independently, and it's evolved about eight times.
Posted by Will van Niekerk on 26-01-2012 10:46
#6
That is awesome... Now googling images of convergently evolved stalk-eyed flies...
Thanks for the note, and also for liking my photo!
Posted by Will van Niekerk on 04-02-2012 15:29
#8
Thanks for the link - how did you know that my google search would be unsuccessful? Very interesting to read.
Edited by Will van Niekerk on 04-02-2012 15:30