Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12


Previous events


TaxonomyBrowseInfoImagesLinksBooksData
Photo#1488618
Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes

Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes
Cleveland National Forest, Riverside County, California, USA
January 24, 2018
Size: 1.7mm
https://www.inaturalist.org/observations/9665581

Images of this individual: tag all
Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes Aphid on Artemisia douglasiana - Pleotrichophorus gnaphalodes

Moved
Moved from Aphids.

Moved
Moved from ID Request.

Pleotrichophorus gnaphalodes
http://www.aphidsonworldsplants.info/C_HOSTS_Art_Asp.htm#Artemisia

1. Tubercles don't seem very developed but they are more so than say on Aphis. Pretty sure I go to 2.
2. Lacks polygonal reticulation, key C.
http://www.aphidsonworldsplants.info/C_HOSTS_Art_Asp.htm#KEYC
1. Siphunculi tubular and longer than wide as is cauda, 12.
12. Dorsal hairs with fan shaped apices, 13.
13. Siphunculi/cauda = 1, I see two secondary rhinaria on antenna III, 14.
14. Siphunculi/cauda=1, 19.
19. Siphunculi pale, 23.
23. A few hairs ambiguous, but appears hairs are more fan like, so 27.
27. Siphunculi/cauda = 1, 28.
28. Hairs on antenna very short, hairs on head look like h-k in the figure, 29.
29. Hard one, but I think it is 30. It does seem to be long and thin near the tip, but it is sort of tapering for the whole length, 30.
30. Siphunculi/cauda= 1, 5 cauda hairs, RIV+V = 0.113mm, R IV + V/ HT II =1.1, 31.
31. Back of head and pale appendages probably mean Pleotrichophorus gnaphalodes

 
Nice!
I think you are correct. #29 definitely goes to 30. There isn't a good comparison image in that figure, but I have "A revision of North American Capitophorus Van der Goot and Pleotrichophorus Börner (Homoptera:Aphididae)" by Leonila Alzate Corpuz-Raros and Edwin F Cook from the Smithsonian Contributions to Zoology (Number 156). It's available from the Smithsonian website if you're interested, if you google even just "A revision of North American Capitophorus" the PDF is the first thing to pop up.

I looked at the two pages of URS illustrations (Pg 120). If you took 29 to 32, and look at the illustrations for those two species, they look like normal URS you'd see in other genera, not this stiletto shape on the specimen you have here, and I agree with how you keyed it out. I also double checked the images of P. gnaphalodes on page 140 and seems to match.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.