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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » Plant-parasitic Hemipterans (Sternorrhyncha) » Aphidoidea » Aphids (Aphididae) » Aphidinae » Aphidini » Aphidina » Aphis
Photo#1835585
Aphis rumicis - Dock Aphid?? - Aphis
Copyright © 2020 TM

Aphis rumicis - Dock Aphid?? - Aphis
Cumberland County, Pennsylvania, USA
June 10, 2020
Being tended to by ants. Feeding on Bitter Dock (Rumex obtusifolius). Colony on stem; dock leaves curled.
tag · login or register to post comments
Contributed by TM on 17 June, 2020 - 11:57pm
Last updated 6 August, 2020 - 12:57pm

Moved
Moved from Aphids.
… Natalie Hernandez, 6 August, 2020 - 12:57pm login or register to post comments

Can't tell.
There are 8 species of Aphis that feed on that species of plant and a few of them can be dark and tended by ants. Aphids are super tough to photograph, and super tough to ID. The characters used to separate a lot of Aphis spp. are things for which you need a slide mounted specimen and a microscope.

I looked through the key and the couplet with A. rumicis says " Anterior half of subgenital plate with 9-28 hairs. Dorsal abdomen with a pattern of dark cross-bands, variably developed and sometimes reduced or fragmentary on ABD TERG 1-5, but consistently well-developed on ABD TERG 6-8, with an especially broad one on 6" Counting the hairs with photos of Ahpis spp. is usually not possible.

http://www.aphidsonworldsplants.info/C_HOSTS_Ros_Ryt.htm#Rumex
… Natalie Hernandez, 24 June, 2020 - 3:02pm login or register to post comments

Moved
Moved from ID Request.
… Ken Wolgemuth, 18 June, 2020 - 6:45am login or register to post comments

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