1911 University Of Illinois Bulletin 151 Insects of IL Shade Trees & Shrubs TF9

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1911 University Of Illinois Urbana Bulletin 151 Important Insects of IL Shade Trees & Shrubs TF9

UNIVERSITY OF ILLINOIS
Agricultural Experiment Station
BULLETIN NO. 151
SOME IMPORTANT INSECTS OF ILLINOIS
SHADE TREES AND SHRUBS
BY STEPHEN A. FORBES
STATE ENTOMOLOGIST
URBANA, ILLINOIS, OCTOBER, 1911


The Catalpa Sphins (Ceratomia catalpa Bdv.)
The Fall Web-worm (Hyphantria (extor Harr.)
The Yellow Poplar Caterpillar (Apalela populi Riley)
The Walnut Caterpillar (Datana integerrima G. & R.).
PAGR..
46,
46г
468
The White marked Tussock moth (/emerocampa lencostismo S: & 1.,) 49
The Brown-tail and Gypsy Moths (Euproctis chrysorrhea I., and
Porthetria dispar I..)
The Forest Tent Caterpillar (Malacosoma disstria Hbm.)
476
The Common Canker-worm (Palacrita vernata Peck)
48
48;
The Lilac Borer (Podosesia swings Harr.).
480
Two Poplar Borers (Nemythrus tricinctus Hart. and M. dolli Neum.) 493
A Viburnum Borer (Sesia pictipes G. & R.)
•496
The Maple Borer (Sesia acerni Clem.)
497
'The Ninehark Borer (Sesia scitula Harr.).
• • 499
The Bag-worm (Thvridopteryr ephemereformis Harr.)
.. 500
'The Poplar and Willow Borer (Cryptorkynchus lapathi Linn.).
... 502
'The Dogwood Twig-girdler (Oberea tripunctata Sivederus)
.. 506
The Locust Borer (Cvllene robinie Forst.).
•. 510
The Oak Twig-pruner (Elaphidion villosum Fabr.).
• • 512
'The Bronze Birch-borer (Agrilus anxius Gory)
The Scurfy Scale (Chionaspis furfura Fitch).
The Oyster-shell Scale (Lepidosaphes uhmi Linn.) ....
..515
.. 517
... 519
The San Jose Scale (Aspidiotus pernicious Comst.) ..
... 520
Putnam's Scale (Aspidiotus ancylus Putnam)
The Walnut or Willow Scale (Aspidiotus juslans-regic Comst.)...... 523
The Cottony Maple Scale (Pulvinaria vitis Linn.)