Deltocephalus productus (Walker).
The food plant of this species must be the grass occurring on the high ridges, as the species has been taken only in such locations awl along the plains where similar habitat occurs. It is very rare, few specimens having been taken, but very likely if its particular food plant were known a larger number could he secured. Cranberry Lake and Barber Point, Aug. 5, 1920. Plains, Aug. 3, 1920. (May be delector S. & D.) Deltocephalus delector Sanders and DeLong.
Taken in company with D. productas on grasses growing on rather high ridges. Barber Point, Aug. 5, 1920. Plains, Aug. 3, 1920.
Deltocephalus configuratus An abundant species in grasses and widely' distributed through the northern U. S. and Canada. Cranberry Lake and Barber Point, Aug. 1, 1917. Wanakena, Aug. 1-7, 1917: Aug. 12, 1.920. Plains, Aug. 3, 1920. Ranger School, July 15, 1.920.
Deltocephalus aces Sanders and DeLong.
Barber Point, Aug. 9, 1920. Plains, Aug. 3, 1920.
Deltocephalus ocellaris This form which appears to be related to Dellorephalus sayi has been taken on grasses, on " tote roads and on the plains. It differs from. D. sayi in being much broader, the head shorter and wider and especially by the ivory-yellow or whitish markings on the davits. Cranberry Lake, Barber Point, July 13, 1920. Wanakena and Plains, Aug. 3, 1920.
Deltocephalus sayi (Fitch).
This species is common in both open grass land and shaded grassy patches of forest. It is parasitized by Dryinids which doubtless serve as a considerable cheek to the multiplication of the species. Cranberry Lake, July 6 and Aug. 5, 1919; July 2-15, 1920. Wanakena, July 15; Aug. 12, 1920; Aug. 1-7, 1917. Grasse River, July 22, 1920. Plains, Aug. 3, 1920.
Deltocephalus misellus Ball.
This species has been taken in large numbers in a number of different localities and has apparently a rather wide range of food plants, although in =Maine it was observed most abundantly upon the Canadian blue grass. It is subject to considerable variation in color, some of the forms being distinctly blackish while others are quite pallid. Cranberry Lake, July 2-39, 1920. Plains,
Aug. 3, 1920.
Deltocephalus apicatus Osborn.
This species appears restricted here and elsewhere through the state by the host plant, Particum huaehuchae. Cranberry Lake, Barber Point, Aug. 9, 1920. Wanakena, Aug. 12. 1920.
This species is one of the most injurious of the leaf-hoppers. Over cultivated meadows and pastures and throughout the dairy region it has a very considerable economic importance. While occurring on a large variety of grasses in the Cranberry Lake region, there is so little of the area devoted to agriculture that it may he considered of small importance. It is abundant in the grasses of the campus at the Summer Camp and Ranger School and in the forest around Wauakena, also in the Grasse River section. It is quite extensively parasitized, both and adults being noticed with parasites attached. Cranberry Lake, Barber Point, July 1, 1920. Wanakena, July 15, Aug. 12, 1920. Ranger School, July 15, 1920. Grasse River, July 22, 1920. Plains, Aug. 3, 1920.
A common crrassland species. Cranberry Lake, July 26, 1917. Wana.kena, 1-7, 1917; Aug. 12, 1920. Ranger School, July 15, 1920. Grasse River, July 22, 1920. Plains, Aug. 3, 1920.
Very common in grasslands and sufficiently abundant to be of distinct economic importance. Cranberry Lake. July 20, 1917. Wanakena, July 15 and 29, 1920; Aug. 12, 1920. Ranger School, July 15, 1920.
This species appears to be restricted for this area to a species of Bromus and occurred abundantly in the Plains, Aug. 3, 1920, and less commonly on Buck Island, Aug. 9, 1920, and the " French Camp " near Wanakena, Aug. 12, 1920.
This species is very much less common than in the cultivated parts of the country where it is an abundant species in pastures and meadows. Cranberry Lake, July 5, 1920.