Tangle Veined Flies

Nemestrinidae

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Nemestrininae; Nemestrinoidea; Nemestrinidae (tangle-veined flies); Muscomorpha; Holometabola; Dicondylia; Mandibulata; Eumetazoa; root; cellular organisms; Brachycera; Diptera (flies); Panarthropoda; Neoptera (neopteran); Pancrustacea; Pterygota (winged insects); Hexapoda (hexapods); Ecdysozoa (ecdysozoans); Insecta (insects); Protostomia (protostomes); Arthropoda (arthropods); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Eukaryota (eukaryotes)

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Trichophthalma; Nemestrinidae (tangle-veined flies); Brachycera; Diptera (flies); Endopterygota (endopterygotes); Neoptera (neopteran); Pancrustacea; Pterygota (winged insects); Hexapoda (hexapods); Ecdysozoa (ecdysozoans); Insecta (insects); Protostomia (protostomes); Arthropoda (arthropods); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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Image of Trichophthalma bivitta Walker 1857

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Trichophthalma bivitta; Trichophthalma; Nemestrinidae (tangle-veined flies); Brachycera; Diptera (flies); Endopterygota (endopterygotes); Neoptera (neopteran); Pancrustacea; Pterygota (winged insects); Hexapoda (hexapods); Ecdysozoa (ecdysozoans); Insecta (insects); Protostomia (protostomes); Arthropoda (arthropods); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

Image of Trichophthalma costalis (Westwood 1835)

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Trichophthalma costalis; Trichophthalma; Nemestrinidae (tangle-veined flies); Brachycera; Diptera (flies); Endopterygota (endopterygotes); Neoptera (neopteran); Pancrustacea; Pterygota (winged insects); Hexapoda (hexapods); Ecdysozoa (ecdysozoans); Insecta (insects); Protostomia (protostomes); Arthropoda (arthropods); Bilateria; Opisthokonta (opisthokonts); Metazoa (Animal); Cellular (cellular organisms); Life (creatures); Eukaryota (eukaryotes)

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CBG Photography Group. Centre for Biodiversity Genomics. CBG Photography Group. Year: 2017. Contact: collectionsBIO@gmail.com. Barcode of Life Data Systems
Dorsal. Catalog no.: USNM ENT 01371591. Specimen ID: 8316267. Taxon rep.: Stenobasipteron. Image quality: 1. Aspect ratio: 1.499.
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KJ Waddington. KJ Waddington. Year: 2012. Barcode of Life Data Systems
Dorsal. Catalog no.: Le13. Specimen ID: 2589811. Field no.: Le13. Taxon rep.: Moegistorhynchus. Image quality: 1. Aspect ratio: 1.499.
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CBG Photography Group. Centre for Biodiversity Genomics. CBG Photography Group. Year: 2022. Contact: ccdbcol@uoguelph.ca. Barcode of Life Data Systems
TrackSLR. Catalog no.: BIOUG85488-D12. Specimen ID: 16398615. Field no.: GMP#37103. Taxon rep.: Prosoeca. Image quality: 1. Aspect ratio: 1.333.
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CBG Photography Group. Centre for Biodiversity Genomics. CBG Photography Group. Year: 2018. Contact: collectionsBIO@gmail.com. Barcode of Life Data Systems
Lateral. Catalog no.: BIOUG36532-C07. Specimen ID: 8522801. Field no.: L#Chile17-29. Image quality: 1. Aspect ratio: 1.333.
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CBG Photography Group. Centre for Biodiversity Genomics. CBG Photography Group. Year: 2017. Contact: collectionsBIO@gmail.com. Barcode of Life Data Systems
Lateral. Catalog no.: USNM ENT 01371675. Specimen ID: 8316268. Taxon rep.: Trichophthalma jaffueli. Image quality: 1. Aspect ratio: 1.333.
Trichophthalma bivitta
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John Tann Flickr Group
Sydney, New South Wales, Australia
Trichophthalma costalis
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Jean and Fred Flickr Group
Feeding on Verticordia
Tangled-vein fly - Trichophthalma
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Jean and Fred Flickr Group
I only managed this shot. Fred caught some feeding on the wing. It was almost as if they were teasing me. They would hang in the air until I got within a certain distance and then buzz off to the other side of their area. These flies were so much fun. They were buzzing very loudly and hovering in small circular locations. If anything, including me, entered their area, they buzzed over to check it out. Other flies were soundly beaten and sent off to find their own area with a series of buzzing and tumbling in the air. While hovering, they seem to hang in the air, wings moving so slowly (or fast enough - I haven't worked that bit out) to see the wings as I have photographed it. It looks as if they have two pair of wings (instead of one pair) which flap one up and one down back legs stretched out the back like a rudder. They can change direction, and disappear in a fraction of a second. I wonder how fast they really fly? An excellent description of these flies has been made by William Archer from Esperance West Australia. He describes these flies as belonging to the same family as March and Horse flies, being different by feeding on flowers instead of blood. He also mentions that they also occur in South Africa which suggests a Gondwana origin.Check out Michael's , Beth's and Ron's photos of these flies.
Trichophthalma flying
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Jean and Fred Flickr Group

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