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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) » Giant Aphids (Lachninae) » Eulachnini » Eulachnus » Eulachnus rileyi
Photo#1346150
Eulachnus rileyi? - Eulachnus rileyi
Copyright © 2017 Salvador Vitanza

Eulachnus rileyi? - Eulachnus rileyi
Rio Rico, Santa Cruz County, Arizona, USA
March 11, 2017
Winged aphids found on pine needles.
Not your typical sluggish aphid. These beasts can move quickly when feeling threatened.
Coordinates: 31.468235, -110.974120
Elevation: 3,455 ft

Most of the aphids on this pine are wingless and identical to my previous entry:

Images of this individual: tag all
Eulachnus rileyi? - Eulachnus rileyi Eulachnus rileyi? - Eulachnus rileyi Eulachnus rileyi? - Eulachnus rileyi Eulachnus rileyi? - Eulachnus rileyi
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Contributed by Salvador Vitanza on 11 March, 2017 - 9:20pm
Last updated 9 April, 2017 - 11:24am

Moved
Moved from Aphids.
… Natalie Hernandez, 9 April, 2017 - 11:24am login or register to post comments

 
Thank you Natalie!
The first BG entry from Arizona!
… Salvador Vitanza, 9 April, 2017 - 11:32am login or register to post comments

My understanding of this group
4 spp. in the USA:
E. agilis & E. brevipilosus do not become covered in wax like yours and can be immediately ruled out. The key character used to distinguish E. rileyi and the fourth species, E. americanus, is the length of the setae on the front of the face in relation to the size of the first antennae joint; as these hairs are longer (as seen in the fourth image), it is therefore E. rileyi, under the assumption that there are no undescribed species / newly introduced species in your area. It keys to E. rileyi using Takahashi's key and matches the description of this pine-feeding species.

I would diagnose your wingless specimens as the same species for the same reason.
… Chris Mallory, 11 March, 2017 - 9:40pm login or register to post comments

 
Thank you Chris!
for revealing your reasoning, conclusion, and caveat. Much appreciated!
… Salvador Vitanza, 11 March, 2017 - 9:45pm login or register to post comments

Moved
Moved from True Bugs, Cicadas, Hoppers, Aphids and Allies.
… Ken Wolgemuth, 11 March, 2017 - 9:39pm login or register to post comments

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