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

Publicado el 29 de agosto de 2022 a las 07:35 PM por zdanko zdanko

Comentarios

Anotado por zdanko hace más de un año

great that you found all of them! very helpful!

Anotado por phycus hace más de un año

I'm glad!

Anotado por zdanko hace más de un año

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

Anotado por edanko hace más de un año

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

Anotado por edanko hace más de un año

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.

Anotado por zdanko hace más de un año

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

Anotado por edanko hace más de un año

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.

Anotado por zdanko hace más de un año

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