440 NEW YORK STATE MUSEUM 



COLORED PLATES 



A series of colored plates were exhibited on the top of the case 

 in two double-faced frames. These plates illustrated the biology 

 and habits of the following species: 



Scale insects affecting trees 



Three plates illustrating different stages of the appletree bark 

 louse, Lepidosaphes ulmi Linn., the San Jose scale, 

 Aspidiotus perniciosus Comst., the European fruit 

 scale, Aspidiotus ostreaeformis Curtis, and the 

 scurfy bark louse, Chionaspis furfura Fitch, were in- 

 cluded in this group. They are respectively plate i, 2, 3 and 4 

 of Museum bulletin 46. 



Insects affecting forest trees 



This included three plates published in the ytJi Report of 

 the Forest, Fish and Game Commission. 



Insects affecting white pine [Plate 13] 



1 Nearly full grown larva of imperial moth Basilona imperalis 



Drury 



2 Masses of the pine bark louse Chermes pinicorticis Fitch 



3 Pupal cells of white pine weevil, Pissodes strobi Peck under bark 



of pine log 



4 Burrows of larvae of same in bark 



5 Portion of dead shoot killed by the insect, showing the circular exit holes, 



the borings of the insect in upper part and the shrunken area extending 

 down on the affected portion of the twig 



6 Pupal cells of white pine weevil within the wood, showing method of exit 



and also a few exit holes in the shrunken affected bark 



7 Adult weevil, Pissodes strobi Peck, enlarged 



8 Le Conte's sawfly, Lophyrus lecontei Fitch, larvae in resting 



position, showing below the stubs of devoured foliage 



9 Pine leaf scale insect, Chionaspis pinifoliae Fitch 



Insects affecting oak [Plate 16] 



1 Egg mass ofAnisota senatoria Abb. & Sm. on underside 



of oak leaf 



2 Egg shells of same on partly eaten leaf 



3 Shrunken larvae of same infested by parasite on leaf stalks showing the 



characteristic feeding of the insect 



4 Nearly full grown larvae of same 



5 Recently hatched larvae feeding side by side and showing the 



skeletonizing in the earlier stages 



