Insects Feeding
on these Plants:


Pyrus spp.
(Pear) [Rosaceae]
(Observations are from Marshall, Hottes & Frison, Rider, Covell, Smith, Blackman & Eastop, Watson, Majka et al., Cranshaw, ScaleNet)

Coleoptera (Beetles)
Cerambycidae: Saperda candida (Round-headed Appletree Borer) [larvae bore through wood] Crw2004; Curculionidae: Anthonomus quadrigibbus [this insect is widely distributed] MAM2007, Orchestes pallicornis (Apple Flea Weevil) [this insect is widely distributed; syn. Rhynchaenus pallicornis] MAM2007; Scolytidae: Scolytus rugulosus (Shothole Borer) [Pyrus spp. are preferred host plants; this Eurasian insect is widely distributed in North America] MAM2007

Heteroptera (True Bugs)
Miridae: Lygocoris communis (Green Apple Bug) Wat1928, Lygocoris invitus (False Tarnished Plant Bug) Wat1928, Lygus lineolaris (Tarnished Plant Bug) Wat1928; Pentatomidae: Brochymena quadripustulata (Four-Humped Stink Bug) Rid2009, Parabrochymena arborea Rid2009

Homoptera (Sucking Insects)
Aphididae: Aphis chetansapa [found within tightly curled terminal leaves, this aphid has been observed in Illinois & Missouri] HF1931 BE2013, Aphis pomi (Apple Aphid) [found on young shoots & leaf undersides] HF1931 Crw2004, Macrosiphum rosae [found on young growth of both wild & cultivated roses, sometimes migrating during the summer to various herbaceous & woody plants] BE2013, Nearctaphis bakeri  (Short-beaked Clover Aphid) [found on young leaves & flower buds of hawthorns & other woody plants in the Rosaceae, migrating during the summer to various herbaceous plants in the Fabaceae & other plant families; this aphid is widely distributed in North America, including Illinois] BE2013 Crw2004, Rhopalosiphum oxyacanthae (Apple-Grass Aphid) [curls young leaves of various trees & shrubs in the Rosaceae, migrating during the summer to the roots of various grasses; this aphid has been found in NE & north-central USA, including Illinois] BE2013 Crw2004; Diaspididae:
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, Epidiaspis leperii (Italian Pear Scale) [found on young branches & twigs; this insect occurs in NE USA & Missouri] SN2014; Pseudococcidae: Pseudococcus maritimus (Grape Mealybug) [found on foliage, polyphagous; this insect is widely distributed] SN2014

Hymenoptera (Bees, Wasps, & Sawflies)

Pamphiliidae: Pamphilius semicinctus [larvae are leaf-rollers] Sm2006; Siricidae: Tremex columba (Pigeon Tremex) [larvae bore into wood, polyphagous] Sm2006; Tenthredinidae: Caliroa cerasi (Pear Slug) [larvae feed on foliage] Msh2006 Sm2006, Dimorphopteryx abnormis [larvae feed on foliage] Sm2006, Hoplocampa brevis [larvae feed on developing fruits] Sm2006, Pristiphora abbreviata (California Pear Sawfly) [introduced into eastern North America, larvae feed on foliage] Sm2006

Lepidoptera (Butterflies, Skippers, & Moths)
Noctuidae: Balsa malana (Many-Dotted Appleworm) [larvae feed on leaves] Cv2005; Sphingidae: Smerinthus cerisyi (One-Eyed Sphinx) Cv2005; Tortricidae: Archips argyrospila (Fruit Tree Leafroller Moth) [preferred host plants, polyphagous] Cv2005, Cydia pomonella (Codling Moth) [intro. into N. America from Eurasia, larvae feed on fruits] Cv2005