Undescribed species of Xylomya (Northeastern)

This species is diagnosed by the two longitudinal yellow stripes on the scutum, disconnected sutural and humeral spots on the scutum, and a black abdomen with narrow, uniform yellow apical bands with large yellow spots on the side of the first segment.

https://www.inaturalist.org/observations/52069034
https://www.inaturalist.org/observations/21163268
https://www.inaturalist.org/observations/129997735
https://www.inaturalist.org/observations/126150006
https://www.inaturalist.org/observations/29201520
https://www.inaturalist.org/observations/123450844
https://www.inaturalist.org/observations/88863882
https://www.inaturalist.org/observations/52356940
https://www.inaturalist.org/observations/133986720
https://www.inaturalist.org/observations/168376125
https://www.inaturalist.org/observations/170716678

Julkaistu elokuu 29, 2022 07:35 IP. käyttäjältä zdanko zdanko

Kommentit

Lähettänyt zdanko yli 1 vuosi sitten

great that you found all of them! very helpful!

Lähettänyt phycus yli 1 vuosi sitten

I'm glad!

Lähettänyt zdanko yli 1 vuosi sitten

These will get stuck at couplet 4 of the key due to the scutum being darker than in normal terminalis: https://sites.google.com/view/flyguide/species-guides/xylomyidae/key-to-xylomya?authuser=0

Lähettänyt edanko yli 1 vuosi sitten

What do we think about this as a possible intermediate between normal americana and the above form? https://bugguide.net/node/view/527477/bgimage

Lähettänyt edanko yli 1 vuosi sitten

I'm more inclined to call that americana due to more red on the abdomen and black restricted to the second tergite. Also the red on the mid tibia; the undesc. sp. has entirely yellow mid tibia, it seems.

Lähettänyt zdanko yli 1 vuosi sitten

Does the "undescribed species" key to X. americana in Webb 1984 based on the 8th flagellomere?

Lähettänyt edanko yli 1 vuosi sitten

If I recall correctly from looking at those specimens, there was macrosetae, and I think it was white, strangely... might be remembering wrong. I'll check again this Sunday.

The note from Woodley on the pin did mention something about the 8th flagellomere.

Lähettänyt zdanko yli 1 vuosi sitten

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