190a ENTOMOLOGICAL SOCIETY. ill 



e. Large apple-green catJerpillar, with a tail horn, and with seven broad, oblique 

 white stripes along each side. 



Plum Tree Sphinx (Sphinx drupiferarum). 

 Other larvae are occasionally found feeding on the leaves of plum : 

 The Viceroy (Limenitis disippus), figs. 91 and 92, Polyphemus and Cecropia. 



I). Attacking the FnUt : 



1. Puncturing and making a crescent shaped slit in the skin of the young fruit, which 



soon drops. 



Plum C'lirculio (Conotrachelus nenuphar) figs. 93 and 94. 



2. Making a round hole in the young fruit. 



Plum Goucjer (Coccotorus scutellaris) Fig. 95. 



3. Eating holes in the ripe fruit. 



Bumble Flower Beetle (Euphoria inda). 



4. Eating holes in the half ripe fruit. 



Rose Chafer (Macrodactylus subspinosus), Fig 96. 



Key to Pear Insects. 

 A. Attacking the Boot : 



1. Laige yellowish -white borer, with a brown head, boring holes in the roots. 



Broad necked Prionus (Prionus lat'icollis). Fig. 97. 



Fig. 97. Prionus laticollis grub. 



B. Attackkvg the Tru7ik, Branches, and Twigs : 



1. The following insects which attack apple (which see) also attack pear. 



Round Headed Apple-Tree Borer Saperda Candida). 

 Flat Headed. Apple-Tree Borer (Chrysobothris femorata 

 Oyster Shell Bark-Louse (Mytilaspis pomorum). 

 Scurfy Bark- Louse (Chionaspis furfurus). 

 San Jose Sccde (Aspidiotus perniciosus). 



2. Large soft whitish larvae boring deeply into the wood. 



Pigeon Tremex (Tremex columba). 



3. In the Spring (May) much honey dew at axils of leaves on smaller twigs, and small 



yellow jumping insects in the sap, foliage yellowish. 

 Pear-Tree Psylla (Psylla pyricola). 



4. Perforations at the base of some buds ; twigs blighted and leaves withered about mid- 



summer. 



Pear-Blight Beetle (Xyleborus pyri). 



C. Attacking the Buds : 



1. The following insects which attack the buds of the apple (which see) also attack those 

 of pear. 



Oblique Banded Leaf-Roller (Cacoecia rosaceana). 

 Eye Spotted Bud-Moth (Tmetocera ocellana). 

 Canker Worms (Anisopteryx pometaria). 



