458 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 7 



LIST OF ZOOPHAGOUS ITONIDIDAE 



By E. P. Felt, Albany, N. Y. 



The following records show that a considerable number of gall 

 midges are predaceous and that this habit appears among widely 

 separated groups. The list of 29 species is far from complete, since 

 we have made no attempt to include therein, species which doubtless 

 prey upon other gall midges, a habit typical of Lestodiplosis and 

 probably other genera. 



Table of Reared Species 



Predator 

 Coccidomyia pennsylvanica 



C. erii 



Dentifibula cocci 

 Endaphis americana 

 Dicrodiplosis coccidarum 



D. californica 

 D. antennata 

 Mycodiplosis pulvinarise 

 M. insularis 



M. acarivora 

 Aphidoletes marina 

 A. cuciimeris 

 A. borealis 

 A. meridionalis 

 A. basalis 

 Diadiplosis cocci 

 Karschomyia cocci 

 Lobodiplosis coccidarum 

 Arthrocnodax abdominalis 

 A. occidentalis 

 A. Carolina 

 A. apiphila 

 A. meridionalis 

 Lestodiplosis grassator 

 L. peruvina 

 Lestodiplosis species 

 Itonida aphidivora 

 Cecidomyia coccidarum 

 Cecidomyia species 



Host 

 Lecanium on beech 

 Erium lichtensioides 

 Aspidiotus uvae 

 Eriophyes on ash 

 Orthezia and Dactylopius 

 Pseudococcus 

 Phenacoccus 

 Pulvinaria 



Tetranychus (red spider) 

 Red spider on lemon 

 Aphis gossypii 

 Aphis gossypii 

 Aphid on tuhp leaves 

 Siphonophora liriodendri 

 Aphids on Tanacetum (tansy) 

 Saissetia nigra 

 Pseudococcus sacchari 

 Orthezia and Dactylopius 

 Red spider 

 Red spider 

 Red spider 



Beehive infested by mites 

 Eriophyes 

 Phylloxera galls 

 Hemichionaspis minor 

 Aleyrodes 

 Aphis malifoliae 

 Orthezia and Dactylopius 

 Cicada eggs 



Summarizing the above we find that the scale insects or Coccidse 

 are preyed upon by the following nine genera: Coccidomyia, 2 species; 

 Dentifibula, 1 species; Dicrodiplosis, 3 species; Mycodiplosis, 1 species; 

 Diadiplosis, 1 species; Karschomyia, 1 species; Lobodiplosis, 1 species; 

 Lestodiplosis, 2 species, and Cecidomyia, 1 species. 



The plantlice or Aphididse are attacked by Aphidoletes, 5 species; 

 Lestodiplosis, 1 species, and Itonida, 1 species, the first genus evidently 

 displaying a marked partiality for the Aphididae. 



