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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » True Bugs (Heteroptera) » Pentatomomorpha » Lygaeoidea » Seed Bugs (Lygaeidae) » Lygaeinae » Oncopeltus » subgenus Oncopeltus (Oncopeltus subgenus Oncopeltus) » Oncopeltus guttaloides
Photo#1619248
Milkweed Bug IDs - Oncopeltus guttaloides
Copyright © 2018 Ray Lemke

Milkweed Bug IDs - Oncopeltus guttaloides
Tucson, Pima County, Arizona, USA
December 11, 2018
Are these both six-spotted milkweed bugs? There seems to be a color difference. Variations of the same species? Please advise.
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Contributed by Ray Lemke on 11 December, 2018 - 4:59pm
Last updated 27 June, 2023 - 8:38pm

Moved
Moved from Oncopeltus.
… v belov, 8 June, 2020 - 3:27pm login or register to post comments

Oncopeltus guttaloides
According to Slater, 1964, O. sexmaculatus do occurs in TX, but is missing from AZ, while O. guttaloides was originally described from this country.

Please notice the different habitus from the ones from TX, with a more slender shape, and the red femorae.

Though current keys are unclear on this point, it is very unlikely to be O. sexmaculatus wich is known only from East states where it has a different habitus while there is already O. guttaloides. I think this is O. guttaloides rather.

While O. sexmaculatus is described with black legs only, I came to thinking that in AZ O. guttaloides is far more variable, with dark, black-legged individuals, and lighter, red-legged ones.

I think your picture is figuring this diversity and that both are O. guttaloides.
… Fabien Piednoir, 8 June, 2020 - 8:22am login or register to post comments

Moved
Moved from ID Request.
… Ray Lemke, 18 December, 2018 - 12:37am login or register to post comments

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