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Blowfly- / Housefly-like Fly (calyptrate flies)Amenia chrysame

Unnamed at Bemboka, NSW

2 images

Amenia chrysame at Bemboka, NSW - 7 Mar 2019
Amenia chrysame at Bemboka, NSW - 7 Mar 2019

Identification history

Blowfly- / Housefly-like Fly (calyptrate flies) Amenia chrysame 10 Mar 2019 jgl
Blowfly- / Housefly-like Fly (calyptrate flies) Amenia chrysame 10 Mar 2019 jgl
Blowfly- / Housefly-like Fly (calyptrate flies) OESTROIDEA (superfamily) 10 Mar 2019 Paul Whitington
Blowfly- / Housefly-like Fly (calyptrate flies) Rutilia sp. 7 Mar 2019 JackieMiles

Author's notes

In montane wet grassland at Bega Swamp (1080m elevation).

8 comments

jgl wrote:
   10 Mar 2019
There is not enough detail visible to assign Rutilia sp or Amenia sp. (nr. chrysame). I'm not sure how we should deal with this in the classification system: this specimen is not going to be anything other than Rutilia or Amenia, yet these genera are in different families.
   10 Mar 2019
Well, given that they are not great photos, I could just delete the sighting. That's the easy solution, and what I usually do with plants that no-one will ever be able to ID.
jgl wrote:
   10 Mar 2019
I mean, it may be the case that some time in the future, I realise that there's a character which helps differentiate this particular specimen - I think is still important to keep the record, the main problem is with fitting it into the framework of this site
   10 Mar 2019
how about this James? I've just created a superfamily endpoint OESTROIDEA.
jgl wrote:
   10 Mar 2019
Ok, had a think about this: its can't be Rutilia - it's a male Amenia chrysame. There's a distinct row of setae on T3 - this excludes all similarly coloured Rutilia spp.. The frons is narrowed (but not obliterated) to the vertex and the postorbits are white - which indicates A. chrysame. The metallic colouration visible on T3 also appears to be divided by a darker area down the mid-line: this is typically seen in some Rutilia, where there's discrete 'blocks' of colour against a dark background, however this feature can also be present in certain specimens A. chrysame, where the bright-dark colour contrast is less extreme. I'd assume that if there was slightly more exposure/DR in the photo, and there was a direct dorsal view of the abdomen, we'd see this dark mid-line blend into the blocks of colour either side of it. We'd also see for sure if there's white spots on the postalar calli, which is the main source of difficulty here (given that I think it's an Amenia and not a Rutilia, I'm assuming that these are indeed present).
jgl wrote:
   10 Mar 2019
How do I add this sighting to the field guide entry for A. chrysame?
   11 Mar 2019
You use “define images”. I’m happy to do that for you James.
   11 Mar 2019
Thanks guys. I've just changed the caption in the ID guide to Bega Swamp instead of Bemboka. Bloody annoying the way google earth keeps calling places on top of the escarpment Bemboka. It manages to call some locations with no town nearby Ben Boyd NP, so why can't it manage Wadbilliga for this spot?

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Nearby Sightings

Page 1 of 1 pages - image sightings only 23 0 23

Plantago sp. (escarpment bogs) at Bemboka, NSW - 8 Mar 2019 Lotus corniculatus at Bemboka, NSW - 8 Mar 2019 Lagenophora montana at Bemboka, NSW - 7 Mar 2019 Myrmecia pilosula at Bemboka, NSW - 7 Mar 2019 Hydrocotyle pterocarpa at Bemboka, NSW - 7 Mar 2019 Chrysolarentia confasciata at Bemboka, NSW - 7 Mar 2019 Euphrasia caudata at Bemboka, NSW - 7 Mar 2019 Utricularia dichotoma at Bemboka, NSW - 7 Mar 2019 Hydrocotyle rivularis at Bemboka, NSW - 7 Mar 2019 Euchiton limosus at Bemboka, NSW - 7 Mar 2019 Isotoma fluviatilis at Bemboka, NSW - 7 Mar 2019 Wahlenbergia ceracea at Bemboka, NSW - 7 Mar 2019 Spiranthes australis at Bemboka, NSW - 7 Mar 2019 Amelora leucaniata at Bemboka, NSW - 7 Mar 2019 Agrostis bettyae at Bemboka, NSW - 7 Mar 2019 Deyeuxia gunniana at Bemboka, NSW - 7 Mar 2019 Lobelia surrepens at Bemboka, NSW - 7 Mar 2019 Xerochrysum palustre at Bemboka, NSW - 7 Mar 2019 Gentianella cunninghamii subsp. cunninghamii at Bemboka, NSW - 7 Mar 2019 Chrysolarentia heliacaria at Bemboka, NSW - 7 Mar 2019 Geitoneura klugii at Bemboka, NSW - 7 Mar 2019 Strepera versicolor at Bemboka, NSW - 13 Mar 2015 Lehtinelagia sp. at Bemboka, NSW - 31 Dec 2012
Plantago sp. (escarpment bogs) at Bemboka, NSW - 8 Mar 2019
Lotus corniculatus at Bemboka, NSW - 8 Mar 2019
Lagenophora montana at Bemboka, NSW - 7 Mar 2019
Myrmecia pilosula at Bemboka, NSW - 7 Mar 2019
Hydrocotyle pterocarpa at Bemboka, NSW - 7 Mar 2019
Chrysolarentia confasciata at Bemboka, NSW - 7 Mar 2019
Euphrasia caudata at Bemboka, NSW - 7 Mar 2019
Utricularia dichotoma at Bemboka, NSW - 7 Mar 2019
Hydrocotyle rivularis at Bemboka, NSW - 7 Mar 2019
Euchiton limosus at Bemboka, NSW - 7 Mar 2019
Isotoma fluviatilis at Bemboka, NSW - 7 Mar 2019
Wahlenbergia ceracea at Bemboka, NSW - 7 Mar 2019
Spiranthes australis at Bemboka, NSW - 7 Mar 2019
Amelora leucaniata at Bemboka, NSW - 7 Mar 2019
Agrostis bettyae at Bemboka, NSW - 7 Mar 2019
Deyeuxia gunniana at Bemboka, NSW - 7 Mar 2019
Lobelia surrepens at Bemboka, NSW - 7 Mar 2019
Xerochrysum palustre at Bemboka, NSW - 7 Mar 2019
Gentianella cunninghamii subsp. cunninghamii at Bemboka, NSW - 7 Mar 2019
Chrysolarentia heliacaria at Bemboka, NSW - 7 Mar 2019
Geitoneura klugii at Bemboka, NSW - 7 Mar 2019
Strepera versicolor at Bemboka, NSW - 13 Mar 2015
Lehtinelagia sp. at Bemboka, NSW - 31 Dec 2012

Page 1 

Location information

  • Coordinates 149.495763-36.536330
  • Altitude 1080.0m
  • Places Bemboka, NSW

Species information

  • Not Sensitive
  • Local Native
  • Non-Invasive

Sighting information

  • 1 Abundance
  • 7 Mar 2019 11:31 AM Recorded on
  • JackieMiles Recorded by
  • Website Reported via
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