Diptera.info :: Identification queries :: Diptera (adults)
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 Weird fly from Amazon Rain Forest (Brazil)
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| Matheus Soares |
Posted on 14-11-2017 23:49
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 Member Location: Manaus, Amazonas, Brazil Posts: 9 Joined: 13.01.16 |
Could anyone help with the identification of this specimen? Brazil, Amazonas, Manaus    |
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| John Carr |
Posted on 15-11-2017 00:18
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 Super Administrator Location: Massachusetts, USA Posts: 10385 Joined: 22.10.10 |
The wing belongs to Stegana. |
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| Dmitry Gavryushin |
Posted on 15-11-2017 19:20
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 Member Location: Moscow region, Russia Posts: 3331 Joined: 17.10.05 |
I believe it's solved. Starting with the key to tribes and genera in Okada, 1989 (Zoological Science 6: 391-399), I've arrived to a rather peculiar genus Pyrgometopa Kertesz, 1901 (meaning 'turret-like frons' ), type species P. penicillata, described from a single female. Here's the original discription (Kertesz, 1901 - Neue und bekannte Dipteren in der Sammlung des ungarischen National-Museums- Természetrajzi Füzetek 1901, 420) which fits quite well: Glänzend schwarz. Stirn vorne bräunlichgelb, der thurmförmige Höcker, die übrigen Theile der Stirn dunkelbraun; Hinterkopf glänzend schwarz. Den Büschel auf dem Höcker bilden schwarze Haare. Untergesicht schwarzbraun, etwas graulich bestäubt; die Backen bräunlichgelb, weiss schimmernd; Rüssel und Taster bräunlichgelb, letztere an der Spitze fast schwarz. Fühler so gefärbt als der vordere Theil der Stirn, kaum bestäubt; das dritte Glied an der Spitzenhälfte schwarzbraun; Borste gelb. Thorax glänzend schwarz, nur die Humeralgegend ist in kleiner Ausdehnung beingelb. Ausgenommen das Schildchen, ist der ganze Körper kurz, schwarz behaart, die Haare erscheinen aber in gewisser Richtung braun. Die Beine sind dunkelbraun, ausgenommen die Schenkel- und Schienenspitzen, sowie die Tarsen an den Vorderbeinen, die Schienen und Tarsen der Hinterbeine, die bräunlichgelb sind. Die Flügel sind in grosser Ausdehnung dunkel-braun gefärbt. Schwinger lichtbraun. Länge: 3.5 mm. Ein ♀ aus Peru (Callanga). Definitely a nice find! Edited by Dmitry Gavryushin on 15-11-2017 19:21 While others can't climb, using infinite pains, I, gravity turning to jest, Ascend, with all ease, perpendicular planes, Rough or smooth, just as pleases me best. |
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| Nikita Vikhrev |
Posted on 15-11-2017 20:39
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 Member Location: Moscow, Russia Posts: 9442 Joined: 24.05.05 |
All these images of this badly known and nice fly should be in our Gallery!
Nikita Vikhrev - Zool Museum of Moscow University |
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| Matheus Soares |
Posted on 16-11-2017 18:09
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Member Location: Manaus, Amazonas, Brazil Posts: 9 Joined: 13.01.16 |
Thanks for the help, I'm going to look for more specimens, this genus does not yet have a record for Brazil. |
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| Dmitry Gavryushin |
Posted on 29-08-2019 08:56
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Member Location: Moscow region, Russia Posts: 3331 Joined: 17.10.05 |
According to a just published paper (Pirani and Grimaldi, Zootaxa 4661(3):445-456), based on specimens of both sexes from Brazil, Peru and French Guyana, Pyrgometopa is a junior synonym for Stegana
Edited by Dmitry Gavryushin on 29-08-2019 08:57 While others can't climb, using infinite pains, I, gravity turning to jest, Ascend, with all ease, perpendicular planes, Rough or smooth, just as pleases me best. |
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