Ilonioptera of Cranberry Lake Region 25 



Family CERCOPIDAE 



The spittle insects or frog hoppers are quite noticeable on 

 account of the masses of froth that surround the young and which 

 adheres to stems of plants or twigs of trees in such quantity as to 

 attract attention. Some of the species must be of considerable 

 economic importance since they occur in such numbers as to cause 

 a severe drain upon the plants affected. The most notable ones in 

 this area are the meadow frog hopper and the forest frog hopper 

 mentioned below. 



Aphrophora parallela (Say) (Fig. 12, a). 



Cranberry Lake (Barber Pt.), July 8, 1917; Aug. 1-8, 1917; 

 Aug. 4, 1918. - . 



Wanakena, Aug. 1-7, 1917. The species is apparently limited 

 to coniferous trees as it has apparently never been recorded out- 

 side of the coniferous area and is the most common species on the 

 conifers ; its nymphal stages and the associated froth masses ap- 

 pear during June and early July. The adults are not uncommon 

 in July and egg-deposition occurs during July or August. 



This species is capable of considerable injury to the coniferous 

 forests being very generally distributed and abundant and the 

 punctures on the twigs resulting in weakening, wilting, or occa- 

 sionally killing of terminal twigs; the evidence of injury, unless 

 the froth masses are observed, are apparent only some time after 

 the attack has been made. It may commonly be credited to other 

 sources of injury as the real culprits may have entirely disappeared 

 when the injury becomes evident. Adults probably feed to quite 

 an extent on the twigs or smaller branches but with less drain upon 

 the plant than during the nymphal stage. It has been bred from 

 spruce and pine and may occur on other conifers. 



Aphorophora 4=notata (Say). 



This occurs on quite a large variety of plants and in some loca- 

 tions is very common. It is apparently most frequent in the low 

 ground locations along streams or lake margins, although one cap- 

 tured on the plains, which was in a border of a thicket, might 

 indicate more open habitat. Cranberry Lake, July 11-14-20, 

 1917, July 28-30. Aug. 11, 1920. Wanakena, Aug. 1-7, 1917. 

 This species also occurs on a variety of plants and has been taken 

 in a number of different plants, especially in the vicinity of Barber 

 Point. 



Philaronia bilineata (Say). 



This species is common on the western plains and during the 

 present season was found only on the ' ' plains ' ' where it occurred in 

 open meadows upon the plains grass. In such location it is quite 

 abundant, but can hardly be counted an economic species in this 

 region. Cranberry Lake, July 24, 1917. Wanakena, Aug. 1-7, 

 1917. Plains, Aug. 3, 1920. 



