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Insects Feeding
on this Plant:

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Alnus incana 
(Speckled Alder) [Betulaceae]
(This includes both spp. incana (Gray Alder) and ssp. rugosa (Speckled Alder). Observations are from Knight, Clark et al., Covell, Needham et al., Blackman & Eastop, Wheeler et al., Harms & Grodowitz, Hamilton, Pepper, Robinson & Bradley, ScaleNet)

Coleoptera (Beetles)
Chrysomelidae: Altica ambiens alni [feeds on leaves] Clk2004 HG2009, Calligrapha alni Clk2004, Calligrapha alnicola Clk2004, Calligrapha amelia Clk2004, Calligrapha apicalis Clk2004, Calligrapha confluens Clk2004, Chrysomela interrupta Clk2004, Tricholochmaea alni Clk2004

Heteroptera (True Bugs)
Miridae: Blepharidopterus provancheri [on Alnus incana rugosa] WHM1983, Ceratocapsus incisus [polyphagous, on Alnus incana incana] Kn1941, Ceratocapsus modestus [polyphagous, on Alnus incana incana] Kn1941, Deraeocoris alnicola [on Alnus incana incana] Kn1941, Deraeocoris nebulosus [on Alnus incana rugosa] WHM1983, Lygocoris alni [on Alnus incana rugosa] Kn1941 WHM1983, Lygocoris clavigenitalis [on Alnus incana incana] Kn1941, Phytocoris erectus [on Alnus incana rugosa] WHM1983, Phytocoris salicis [on Alnus incana rugosa] WHM1983, Pilophorus brunneus [on Alnus incana rugosa] WHM1983, Psallus fuscatus [on Alnus incana incana and Alnus incana rugosa] Kn1941 WHM1983

Homoptera (Sucking Insects)
Aphididae: Calaphis alni [found on young shoots & leaves] BE2013 Pp1965, Euceraphis gillettei [found in boreal areas] BE2013, Hannabura alnosa [found on leaf undersides, distributed in NE USA] BE2013, Illinoia alni [found on leaf undersides, distributed in NE USA & Canada] BE2013, Oestlundiella flava [found on Speckled Alder] RB1965, Paraprociphilus tessellatus (Woolly Alder Aphid) [found on Speckled Alder; syn. Prociphilus tessellatus] Pp1965, Pterocallis alnifoliae [found on leaf undersides of Speckled Alder in Manitoba, Wisconsin, Pennsylvania, & Massachusetts] BE2013, Pp1965 RB1965; Cercopidae: 
Aphrophora quadrinotata (Four-Spotted Spittlebug) [on Alnus incana rugosa, fed on by adults only] Hm1982, Clastoptera obtusa (Alder Spittlebug) [on Alnus incana rugosa, eaten by both nymphs & adults] Hm1982; Diaspididae: Chionaspis lintneri (Lintner Scurfy Scale) [this insect is found in E USA & SE Canada on Alnus incana incana & Alnus incana rugosa] SN2014, Diaspidiotus ostreaeformis (False San Jose Scale) [found on bark of Alnus incana incana, polyphagous; this insect is widely distributed in N USA & S Canada, also in Eurasia, where it is native] SN2014, Lepidosaphes ulmi (Oystershell Scale) [found on bark of Alnus incana rugosa, polyphagous; this insect is widely distributed in the USA, S Canada, & Eurasia] SN2014

Lepidoptera (Butterflies, Skippers, & Moths)
Geometridae: Lobophora nivigerata (Powdered Bigwig) Cv2005; Gracillariidae: Phyllonorycter alnicolella (Alder Leafblotch Miner) Ndm1928 

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