Insects Feeding
on these Plants

Carex spp.
(Sedge) [Cyperaceae]
(Observations are from Vaurie, Hoffman, Campbell et al., Hottes & Frison, Knight, Microleps website, Wyoming Agr. Exp. Sta., Barnes, Marshall, Clark et al., Lattin, Bouseman & Sternburg, Bouseman et al., Needham et al., Smith, Blackman & Eastop, Harms & Grodowitz, Hamilton, Vickery & Kevan, Brust et al., Pepper, Spencer & Steyskal, Braun, Majka et al., Panzer et al., ScaleNet)

Coleoptera (Beetles)
Chrysomelidae: Donacia porosicollis Clk2004, Plateumaris aurifera Clk2004, Plateumaris diversa Clk2004, Plateumaris dubia Clk2004, Plateumaris flavipes Clk2004, Plateumaris fulvipes Clk2004, Plateumaris robusta Clk2004, Poecilocera harrisii Clk2004 HG2009, Stenispa metallica [feeds on leaves] HG2009; Curculionidae: Sphenophorus callosus (Southern Corn Billbug) Vau1983, Sphenophorus costicollis (Sedge Billbug) Vau1983, Sphenophorus costipennis [larvae live in plants] Msh2006, Sphenophorus aequalis aequalis (Clay-colored Billbug) [this insect is widely distributed] MAM2007 

Diptera (Flies)
Agromyzidae: Cerodontha angulata [larvae are leaf-miners; widespread] SS1986, Cerodontha impercepta [probable host plants; found in North Carolina] SS1986, Cerodontha impolita [probable host plants; found in North Carolina & Colorado] SS1986, Cerodontha subangulata [probable host plants; found in Illinois & Maryland] SS1986, Chromatomyia pseudomilii [larvae are leaf-miners; found in North Carolina, Tennessee, California, Alaska, & Europe] SS1986; Ephydridae: Hydrellia griseola (Lesser Rice Leafminer) [larvae mine leaves] HG2009; Psilidae: Loxocera cylindrica [larvae develop in stems, found Carex interior] Msh2006; Scathophagidae: Cordilura varipes [larvae bore through stems, found in Carex comosa] Msh2006

Heteroptera (True Bugs)
Lygaeidae: Cymus angustatus [eats seeds, preferred host plants] Hof1996, Oedancala dorsalis [eats seeds] Msh2006; Miridae: Mimoceps insignis Kn1941, Teratocoris discolor Kn1941; Pentatomidae: Eurygaster alternata [possible host plants] Lat1964

Homoptera (Sucking Insects)
Aphididae: Abstrusomyzus phloxae [polyphagous] BE2013, Allaphis daviaulti [found in leaf sheaths, observed in E Canada, including Ontario & Quebec] BE2013, Allaphis producta [syn. Thripsaphis producta, found on leaves] HF1931 BE2013, Allaphis verrucosa [syn. Thripsaphis verrucosa] HF1931 BE2013, Acyrthosiphon pisum HF1931, Anoecia caricis [feeds on roots, found in Washington, D.C.] BE2013, Aphis rumicis [polyphagous] HF1931, Carolinaia caricis [found on Poison Ivy, migrating to the inflorescences of sedges] BE2013 Pp1965, Carolinaia tissoti [found in E USA] BE2013, Ceruraphis eriophori [curls leaves of Viburnum spp., migrating to various sedges & other wetland plants during the summer; this aphid was introduced into North America from Europe] BE2013, Forda formicaria [feeds on roots of grasses & some sedges; found in Illinois, introduced from Eurasia] BE2013, Hyadaphis foeniculi HF1931, Iziphya albipes [found on hillsides, observed in Minnesota & Quebec] BE2013, Iziphya americana [found in bogs & wet meadows, distributed in N. USA & Canada, including Connecticut] BE2013, Iziphya flabella [found on leaves of sedges that occur on rocky hillsides & dry upland forests] HF1931 BE2013 Pp1965, Iziphya vittata [found on leaves of sedges that occur in wet open places; this aphid is distributed in the Great Lakes region & Quebec] BE2013, Peltaphis hottesi [found in Illinois & Quebec] BE2013, Prociphilus corrugatans [causes cupping & curling of hawthorn leaves, migrating to the roots of sedges & rushes during the summer; distributed in NE & north-central USA, including Illinois] BE2013, Rhopalosiphum maidis HF1931, Rhopalosiphum padi (Bird Cherry & Oat Aphid) [polyphagous on secondary hosts] HF1931, Rhopalosiphum parvae [found in Illinois] HF1931 BE2013, Saltusaphis elongata [found on sedges in wetland areas; distributed in eastern North America, including Illinois; syn. Strenaphis elongata] HF1931 BE2013 Pp1965, Schizaphis graminum HF1931, Schizaphis nigra [found in Canada & USA, including Colorado, Virginia, & Washington, D.C.;
syn. Schizaphis viridirubra, syn. Toxoptera viridirubra] BE2013 Pp1965, Sipha flava (Yellow Sugar Cane Aphid) [found on leaf blades of various grasses & sedges; widespread in USA, including Illinois] HF1931 BE2013, Subsaltusaphis canadensis [found in Ontario] BE2013, Subsaltusaphis virginica [found on sedges in wetland areas; distributed in eastern North America, including Illinois] BE2013 Pp1965, Subsaltusaphis wanica HF1931, Thripsaphis ballii [distributed in E USA & Canada] HF1931 BE2013 Pp1965, Vesiculaphis caricis [found on rhododendrons, migrating to Carex spp.; found in North Carolina & New Jersey, this aphid was probably introduced into North America from abroad] BE2013; Cercopidae: Paraphilaenus parallelus [host plants of adults; this spittlebug is found in Ontario, Wisconsin, & Illinois] Hm1982 Pnz2006; Cicadellidae: Cosmotettix bilineatus Pnz2006, Cosmotettix luteocephalus Pnz2006, Elymana inornata Pnz2006; Pseudococcidae: Trionymus caricis (Carex Mealybug) [found underneath leaf sheaths; this insect occurs in Maryland, Massachusetts, Tennessee, & elsewhere in the USA] SN2014

Hymenoptera (Bees, Wasps, & Sawflies)
Tenthredinidae: Pachynematus corniger [larvae feed on foliage] Sm2006, Paracharactus niger [larvae feed on foliage, probable host plants] Sm2006

Lepidoptera (Butterflies, Skippers, & Moths)
Arctiidae: Ctenucha virginica (Virginia Ctenucha) Msh2006;
Crambidae: Schoenobius mellinellus dispersellus [observed in northern Michigan] HG2009; Elachistidae: Elachista argentosa [larvae are leaf-miners, especially of narrow-leaved sedges; found in Ohio] Ndm1928 Br1948, Elachista cucullata [larvae are leaf-miners, especially of narrow-leaved sedges; found in Ohio, Pennsylvania, New Jersey, & Ontario; syn. Biselachista cucullata] Br1948, Elachista madarella [larvae are leaf-miners of overwintering leaves; found in Ohio, Pennsylvania, New Jersey, New York, & Ontario] Mic2010 Br1948; Hesperiidae: Euphyes conspicuus (Black Dash) [found in northern half of IL] Bou2006, Euphyes vestris metacomet (Eastern Dun Skipper) [probable host plants] Bar1999 Bou2006, Poanes massasoit (Mulberry Wing) [found in NE Illinois] Bou2006, Poanes viator (Broad-Winged Skipper) [host plants in some Midwestern areas] Bou2006; Noctuidae: Hypocoena inquinata (Tufted Sedge Moth) [this moth is found in sedge meadows, mostly north of Illinois; syn. Chortodes inquinata] Pnz2006; Nymphalidae: Satyrodes appalachia (Appalachian Brown) [found in wet to damp woodlands & woodland edges in NE & southern IL] Bar1999 BS2001 Msh2006, Satyrodes eurydice (Eyed Brown) [found in wet open areas, northern half of IL] BS2001 Msh2006

Orthoptera (Grasshoppers)
Acrididae: Ageneotettix deorum (White-Whiskered Grasshopper) Cmp1974, Arphia conspersa (Speckle-winged Grasshopper) [this grasshopper is found in open areas, often sandy or gravelly] VK1985, Arphia simplex (Plains Yellow-Winged Grasshopper) Cmp1974, Chloealtis abdominalis (Thomas' Broad-winged Grasshopper) [this grasshopper is found in open wooded areas, dry slopes, & grassy areas] VK1985, Dissosteira carolina (Carolina Grasshopper) Wy1994, Encoptolophus sordidus (Clouded Grasshopper) Cmp1974, Eritettix simplex (Velvet-Striped Grasshopper) [this grasshopper is found  in mesic to dry grassy areas; nymph host plants] BHW2008 Cmp1974, Melanoplus confusus (Little Pasture Grasshopper) Cmp1974, Melanoplus femurrubrum (Red-Legged Grasshopper) Cmp1974, Melanoplus keeleri luridus (Keeler's Grasshopper) Cmp1974, Melanoplus scudderi latus (Scudder's Shortwinged Grasshopper)  Cmp1974, Orphulella speciosa (Pasture Grasshopper) Cmp1974, Pardalophora haldemani (Haldeman's Grasshopper) Cmp1974, Phoetaliotes nebrascensis (Large-Headed Grasshopper) Cmp1974, Stethophyma gracilis (Graceful Sedge Grasshopper) Msh2006, Trachyrhachys kiowa (Kiowa Grasshopper) [this grasshopper is found in dry open areas with grasses & sedges] BHW2008