168 BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 



1329. RILEY, C. V. Continued. 



iu the. South, 79 The waxy secretion of Homoptera, 80 The 

 newly hatched louse, 80 The larval scale, 81 Development of 

 the female scale, 81 Growth of the male scale, 82 The male 

 louse, 83 Rare occurrence of the winged male, 84 Agamic mul- 

 tiplication, 85 Mode of spreading, 85 Food-plants, 86 Varie- 

 ties of the apple-tree preferred by it, 86 Enemies and parasites, 

 87; mites, 87; Aphelinus mytilaspidia and Dr. Le Baron's account 

 of its habits, 88 Easy transportation and introduction of the 

 Aphelinus, 90 Remedies, 90 Application of oily substances, 

 90 Bibliographical and descriptive, 91 The generic name, 91 

 Signoret's classification of the Coccidw, 92 Specific name, 92 

 Characteristics and habits of three allied species, 93 A new name 

 necessary for our apple-tree species, 94 Description of the eggs 

 and the winged male, 95 ; of the male and female scale and of 

 the female louse, 96. 

 THE PINE-LEAF SCALE-INSECT, CJiionaspis pinifolii 97 



Nature of the malady caused by it, 97 Natural history of the in- 

 sect, 98 The male, 99 There are two annual broods, 99 It is 

 confined to the pines proper, 100 Natural enemies, 100; the 

 twice-stabbed lady-bird, 100 ; the painted lady-bird and descrip- 

 tion of its larva, 101 Remedies, 101 Stripping the old leaves, 

 102 Application of powdered and liquid substances, 102. 

 THE HICKORY BARK-BORER, Scolytus A-spinosus 103 



Accounts of the damage caused by it in Missouri, 103 Habits of 

 the European Scolytus destructor, 104 Various kinds of hickory 

 attacked by the hickory bark-borer, 105 Its natural history, 

 105 Natural enemies, 106 Description of the three-banded 

 Spathius, 106 Mr. Cresson's description of Bracon scolytivorus, 

 106 Remedies, 107 Description of the imago, 107 Is it differ- 

 ent from Scolytus ^-spinosus f 107. 

 THE ROSE CHAFER, Macrodactylus subspinosus 108 



Great damage caused by the beetle in 1872, 108 Remedy, 109 



Harris's account of its natural history, 109. 

 THE FALSE CHINCH-BUG, Nysius angustatus Ill 



It was not known as injurious before 1872, 111 Accounts of injury 

 done by it, 111 How it differs from the true chinch-bug, 112 

 Its probable natural history, 112 Description of imago, larva, 

 and pupa, 113 Variation in the imago, 113 Its great abundance 

 in the fall of 1872, 114. 



INSECTS INJURIOUS TO THE GRAPE-VINE 114 



The grape-vine apple-gall, Cecidomyia vitis-pomum 114 



The breast bone of gall-gnat larvae, 114 The gall mistaken for an 



apple, 114 Form of the gall, 115 Habits of the larva, 116. 

 The grape-vine filbert-gall, Cecidomyia vitis-coryloides 116 



Appearance of the gall, 116 Larva of the gall-maker, 117. 

 The grape-vine tomato-gall, Lasioptera vitis 117 



Its curious resemblance to a tomato, 117 Various shapes assumed 



by it, 118 The larva, 118 Enemies of the larva, 118. 

 The grape-leaf trumpet-gall, Cecidomyia viticoJa 118 



Characteristics and occurrence of the gall, 118. 



EGGS IN AND ON CANES AND TWIGS * ... 119. 



* Pages 119-125 were reprinted under title Insect punctures, in <Rept. State Board 

 Agric. Kansas for 1673, 1874, pp. 274-279, figs. 47-59. 



