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.
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