Diptera.info :: Identification queries :: Diptera (adults)
 Diasemopsis (alt. Chaetodiopsis) meigenii, Zambia
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| Will van Niekerk |
Posted on 20-01-2012 19:05
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 Member Location: UK Posts: 508 Joined: 16.11.11 |
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. Will van Niekerk attached the following image:  [140.48Kb] Edited by Will van Niekerk on 21-01-2012 23:50 |
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| Will van Niekerk |
Posted on 20-01-2012 19:06
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Member Location: UK Posts: 508 Joined: 16.11.11 |
Second image:
Will van Niekerk attached the following image:  [128.75Kb] |
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| Jan Willem |
Posted on 21-01-2012 23:11
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 Member Location: Waalwijk, The Netherlands Posts: 2170 Joined: 24.07.04 |
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.
Jan Willem van Zuijlen |
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| Will van Niekerk |
Posted on 21-01-2012 23:48
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Member Location: UK Posts: 508 Joined: 16.11.11 |
Awesome, thanks! I'll just change the title and upload to the gallery! |
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| John Carr |
Posted on 22-01-2012 00:50
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 Super Administrator Location: Colorado, USA Posts: 10656 Joined: 22.10.10 |
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. |
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| Will van Niekerk |
Posted on 26-01-2012 10:46
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Member Location: UK Posts: 508 Joined: 16.11.11 |
That is awesome... Now googling images of convergently evolved stalk-eyed flies... Thanks for the note, and also for liking my photo! |
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| John Carr |
Posted on 26-01-2012 20:46
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Super Administrator Location: Colorado, USA Posts: 10656 Joined: 22.10.10 |
Here's the page with the illustration: http://books.goog...p;lpg=PA30 |
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| Will van Niekerk |
Posted on 04-02-2012 15:29
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Member Location: UK Posts: 508 Joined: 16.11.11 |
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 |
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