Insects Feeding
on these Plants:
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Juglans regia (English Walnut) [Juglandaceae]
(Observations are from Blackman & Eastop, Pepper, ScaleNet)
Homoptera (Sucking Insects)
Aphididae: Chromaphis juglandicola (Walnut Aphid) [found on leaf undersides, English Walnut is a preferred host; this aphid is rare in NE & north-central USA, but more common in California] BE2013 Pp1965; Diaspididae: Diaspidiotus ancylis (Putnam Scale) [found on leaves, sometimes bark, polyphagous; this insect is widely distributed in the USA] SN2014, Diaspidiotus juglansregiae (English Walnut Scale) [found on bark, polyphagous; this insect is widely distributed in the USA] SN2014, Diaspidiotus ostreaeformis (False San Jose Scale) [found on bark, polyphagous; this insect is widely distributed in N USA & S Canada, also in Eurasia, where it is native] SN2014, Diaspidiotus perniciosus (San Jose Scale) [usually found on bark, polyphagous, although preferring woody species in the Rosaceae; this insect is widely distributed; syn. Comstockaspis perniciosa, syn. Quadraspidiotus perniciosus] SN2014, Lepidosaphes conchiformis (Fig Scale) [found on bark & leaves, also fig fruits in California; this insect occurs in some areas of both E USA & W USA, including Missouri & California; it was introduced from Eurasia] SN2014, Lepidosaphes ulmi (Oystershell Scale) [found on bark, polyphagous; this insect is widely distributed in the USA, S Canada, & Eurasia] SN2014, Melanaspis tenebricosa (Gloomy Scale) [found on bark, polyphagous; this insect occurs in E USA & California] SN2014, Pseudaulacaspis pentagona (White Peach Scale) [polyphagous; this insect is found mostly in E USA, it was introduced from Eurasia] SN2014; Pseudococcidae: Pseudococcus maritimus (Grape Mealybug) [found on foliage, polyphagous; this insect is widely distributed] SN2014