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Species Shivaphis celti - Asian Woolly Hackberry Aphid

Wooly Aphid? - Shivaphis celti Asian Woolly Hackberry Aphid - Shivaphis celti Floating Fluff - no wait, it's Flying Fluff - Shivaphis celti White aphid ? - Shivaphis celti Aphid? - Shivaphis celti Planthopper nymph - Shivaphis celti Planthopper nymph - Shivaphis celti Planthopper nymph - Shivaphis celti
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Sternorrhyncha (Plant-parasitic Hemipterans)
Superfamily Aphidoidea
Family Aphididae (Aphids)
Subfamily Calaphidinae
Tribe Panaphidini
Subtribe Panaphidina
Genus Shivaphis
Species celti (Asian Woolly Hackberry Aphid)
Explanation of Names
celti no doubt refers to the host tree, Celtis.
Size
~2mm
Identification
These aphids are covered in a bluish white wax that forms from conspicuous abdominal glands.

The winged forms have shading along the wing veins, particularly toward the edge of the wings.


While generally obscured like most of the insect by the waxy covering, the antennae are marked with alternating black and white bands.
Range
Known to occur in Florida, Georgia, Texas, and California. Will no doubt spread from these areas to others wherever Hackberry occurs along with a suitable climate.
Habitat
On the leaves of hackberry, particularly the undersides.
Season
Summer adults are all female who reproduce parthenogenetically. In the fall, males appear and mating occurs, producing eggs that overwinter.
Food
Varieties of Hackberry, Celtis.
Life Cycle
Summer adults are all winged or wingless females that reproduce parthenogenetically. In the fall, winged males appear and mating occurs, producing eggs that overwinter on tree branches.
Remarks
While there are other species in the genus Shivaphis in Asia, only S. celtis is known to occur in the Western Hemisphere.
Accidently introduced in the Southeast in the late 1990's. First found in Georgia (1996), then Florida (1997), Texas and California (both 2002)
These aphids produce copious amounts of clear, sticky honeydew, that will coat anything beneath their host tree, including, to many people's chagrin, vehicles.
While the honeydew may be bothersome to people, they don't seem to pose any real threat to their host trees.
Print References
Photos and info in Cranshaw, Garden Insects of North America, page 312 (1)
Internet References
The content for this guide page was mostly gathered from these two sources:
Pest Notes: Hackberry Woolly Aphid, UC ANR Publication 74111 (PDF)
Halbert, S. E., and P. M. Choate. 1999. An Asian Woolly Hackberry Aphid, Shivaphis celti Das (Homoptera: Aphididae). Fla. Dept. Agric. & Consumer Services Ent. Circ. 392. (PDF)
Works Cited
1.Garden Insects of North America : The Ultimate Guide to Backyard Bugs (Princeton Field Guides)
Whitney Cranshaw. 2004. Princeton University Press.