THE INSECT FAUNA OF THE GENUS CRATAEGUS 

 WALTER H. WELLHOUSE 



This paper is submitted as a result of three years of study of the insects 

 that feed on the plants belonging to the genus Crataegus. The writer's 

 object at the time when the work was undertaken was primarily to learn, 

 by collecting and rearing, what insects occur on the trees of this genus in 

 central New York. As the interest in the work increased, it was decided 

 to widen the field and make the list more complete by including the insects 

 that other workers have found to be eaters of Crataegus. 



There are three older lists of insects feeding on Crataegus which have 

 been helpful in the preparation of the present catalog. Kaltenbach 

 (1872) 1 gives a list of 104 European species, Packard (1890) gives 46 

 American species, and Felt (1906) gives 28 American species. With the ex- 

 ception of these three lists, the material included in this paper is gathered 

 from widely scattered references and from the writer's observations. Since 

 food-plant indices are very commonly omitted from entomological writings, 

 it is difficult to get a list of all the insects that feed on a plant. Such a 

 list can be obtained only by scanning the pages of a multitude of papers 

 containing biological notes on all orders of insects. Much of that kind of 

 work has been done in the preparation of this catalog, but, since it has 

 not been possible to see all papers that might contain accounts of insects 

 feeding on Crataegus, the writer does not claim that his list is complete. 



The catalog contains 382 species, representing 9 orders and 55 families. 

 They are distributed as follows: 



Acarina, 10 species: Thysanoptera, 1 species: 



Eriophyidae 7 Thrypidae 1 



Phyllocoptidae 1 Coleoptera, 74 species: 



Tetranychidae 2 Elateridae 3 , 



Orthoptera, 4 species: Buprestidae 6 



Gryllidae 1 Scarabaeidae 4 



Acridiidae 3 Cerambycidae 5 



Odonata, 1 species : Chrysomelidae 12 



Agrionidae 1 Curculionidae 40 



Hemiptera (including Homoptera), 84 Ipidae (Scolytidae) 2 



species: Anthribidae 1 



Miridae (Capsidae) . . 12 Dermestidae 1 



Tingitidae 4 Lepidoptera, 184 species: 



Membracidae 4 Papilionidae 2 



Cicadellidae (Jassidae) 18 Nymphalidae 2 



Psyllidae <Chermidae) 7 Pieridae 1 



Aphididae 22 Lycaenidae 3 



Coccidae 17 Sphingidae 3 



in parenthesis refer to Literature Cited, page 1083. 



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