INSECTS INFESTING THE APPLE TREE. 



CHAP. 



The Woolly Aphis ( SchUoneura lanigera).. IS 

 The Oyster-shell Bark-Louse (Aspidiotus 



conehi/oriiiii) 19 



The San Jose Scale (AnpidiolKS pemicio- 



s^(jf) 20 



The Greedj' Scale (Aspidiohrs rapax) 21 



The Round-headed Apple-tree Borer (Sa- 



perda Candida) 22 



The Flat-headed Apple-tree Borer (Clirij- 



sobothris femorata) 23 



The Apple-twig Borer ( Eost.richMs bicau- 



datiM) 24 



The Prickly-bark Beetle ( Leptostylim acul- 



iferus) 25 



The Gray Bark-eating Weevil (Thricolepi» 



siiimlator) 26 



The Buffalo Tree-hopper (Ceresa biibalus). 27 



The Harvest-fly (Cicada) 28 



Canker Worms 29 



The Fall Canker Worui (Anisopteryx pome- 



taria) 30 



The Yellow Canker Worm (Hibernia tili- 



aria) 31 



The Spring Canker Worm (Anisopteryx 



remata) 32 



DeLong's Caterpillar (Clisiocampa con- 



stricta) 33 



The Orchard Tent Caterpillar (Clisiocampa 



Americana) 34 



The Forest Tent Caterpillar (Clisiocampa 



sylvatieaj 35 



The Fall Web Worm (Hyphantria tfixtor)..3& 

 The Tussock Moth (Orygia lexicnstir/ma) . . .37 

 The Yellow-necked Caterpillar (Datana 



miniiitra) 38 



The Red-humped Caterpillar (Notodonta 



concinna) 39 



The Greater Leaf-roller {Loxotaenia rom- 



ecana) 40 



CHAP. 



The Apple-leaf Grumpier (Phycita m;bulj). 41 



The Bud Worm {Penlhina oculana) 42 



The Many Dotted Ca.iev\\\\\9,v(Brathytfvni.a 



malanxt) 43 



The Turnus Butterfly (Papilio tttrmis) 44 



The Apple Buculatrix (Bucculatrix pomi- 



foliella) 45 



The Apple-tree Aphis {Aphis tnali) 46 



The Apple-leaf Aphis {Aphis malifolue) . . . .47 

 The Ten-lined Leaf-eater {Polyphylla 10- 



lineata) 48 



The Goldsmith Beetle iCotalpa lanigera). . A% 



The Robust Leaf Beetle (Serica valida) 50 



The Codlin Moth {Carpocapsa pomonella)..51 

 The Apple Maggot {Trypeta pomonella). ... 52 

 The Apple Curculio (Anthonomus quadri- 



yibbus) 53 



The Earwig (Forficula auricularia) 54 



The following insects are also injurious to 

 the apple tree, but, as they are more destruct- 

 ive to other trees, they will be treated of in 

 another part of this work: 



The Broad-necked Prionus (Priomis lati- 



collis). 

 The Branch and Twig Burrower {Polycaon 



confertus). 

 The Pear-tree Scolytus {Scolytus pyri) . 

 The Snowy Tree-cricket (Oecanthusniveus). 

 The White-lined Sphinx {Deilephila lineata). 

 The Angular-winged Katydid {Microcen- 



truni retinervis). 

 The Rose Chafer {Mucrodaetyhis subspino- 



SU.S). 



The Plum Curculio (Conotrachelus nenu- 

 phar). 

 The Plum Moth (Semasia pruniana). 

 The Red Spider (Tetranychus telarius). 



