. Annual report of the Maine Agricultural Experiment Station . raying and the so-called shield success of the spraying for the species has been somewhat varied,the writer having found in treating an outbreak on potatoes that aspray of kerosene emulsion seemed to be very effective, while someobservations have shown that the results were quite unsatisfactory,especially as applied to the adults. Dr. Hasemann recommends forapple a very heavy spray especially while the insects are in the nymphalstage in the early part of the season so as to secure practically exter-mination and preventio
. Annual report of the Maine Agricultural Experiment Station . raying and the so-called shield success of the spraying for the species has been somewhat varied,the writer having found in treating an outbreak on potatoes that aspray of kerosene emulsion seemed to be very effective, while someobservations have shown that the results were quite unsatisfactory,especially as applied to the adults. Dr. Hasemann recommends forapple a very heavy spray especially while the insects are in the nymphalstage in the early part of the season so as to secure practically exter-mination and prevention of the later broods. With potatoes a specialspray which was directed so that the adults in leaping from the plantswere certainly wet by the solution seemed however, very effective andan adjustment of the spraying machinery so that a similar result couldbe obtained on apple trees or nursery rows, ought, it seems to me, tobe equally effective. The shield method consists in the use of a sheet ofpaper or canvas covered with tar or tangle-foot carrying it along. Fig. 35. Eiupoasca mail njmiphal stagesster, Iowa Exp. Sta. Bulletin.) I to 5. (After R. L. Web- LEAFHOPPERS OF MAINE. 155 close to the plants and disturbing the plants so as to make the hoppersjump up against the shield where they will be caught in the stickymaJterial. Such an apparatus mounted on wheels and drawn throughnursery rows has been recoimmended for freeing nursery stock fromthe species and some similar adjustment may be made for potatoes orbeans in field rows. Eupteryx nigra Oshorn. Eupteryx nigra Osborn. Rept. N. Y. State Entomologist, XX, 543. Above black except anterior border of vertex and costal border ofelytra; below greenish white except pygofers which are smoky mm. Collected on ferns at Orono July 29th, Aug. 5th, Bar Harbor Aug. 31st,July 10, 1914. These specimens agree very closely with the description and typeswhich were females but a male taken July 29th differs in the darkerfront,
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