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Tephritidae - Strauzia noctipennis - male

Tephritidae - Strauzia noctipennis - Male
Plymouth Rock, Winneshiek County, Iowa, USA
May 23, 2010
If this is indeed Strauzia longipennis will someone tell me about the different wing patterns? Thanks.
(I do know that patterns aren't diagnostic.)

The spiky "Punk" hairstyle and the abdomen without a pull-tab = ♂

Moved from Sunflower Maggot.

Moved from Fruit Flies.

Different patterns are different patterns
As of 1993(1) the species was consdiered suspiciously variable but nobody could figure a good way to split it further. The handbook gives three sample wing patterns treated as different patterns of the same species.

There an interesting paper here. Apparently there are at least genetically distinct host races, if not cryptic species, involved. The authors find that some of the wing pattern variation is explained by these different forms.

A. Hippee says: “The fly listed as S. longipennis could either be correct or it could be S. noctipennis, depending on what plant it was found on. S. longipennis should be on Helianthus tuberosus instead of H. grosseserratus. Definitely a male (that wing pattern is only found in males as far as I know).”

There is a lot of Sawtooth Sunflower, H. grosseserratus, in this prairie planting but no Jerusalem artichoke, H. tuberosus.

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