Il6 MAINE AGRICULTURAL EXPERIMENT STATION. IQIS- 



Scaplwideus luteolus Van Duzee. 



Scaphoideus luteolus Van D. Bull. Buf. Soc. N. H. V, p. 210. 

 This species is close to immistus but usually lighter colored and there 

 is a distinction in the male genitalia which is usually a fairty certain 

 means of distinction. The specimens in hand are all males and repre- 

 sent collections at Orono, N. Harpswell, and Ft. Kent in Aug. 1913. 

 The species is evidently miich less abundant than ivuuisfus. 



Scaphoideus i^unistus Say. 



Jassus i»i)iiistiis Say. Acad. Nat. Sci. Phila. Jour. VI, 306, (1831). 

 Scaphoideus immistus Uhler. Md. Acad. Sci. Tr. I, 33 (1889). 

 Scaphoideus immistus Osborn. Cine. Soc. Nat. Sci. XIX 204. 



Whitish with dark markings, the head with a conspicuous cross band 

 on the vertex. Cross veins at end of costal space very oblique and con- 

 spicuous. Length 5 to 6 mm. 



As elsewhere throughout a large part of northern United States this 

 is the most abundant and generally distributed Scaplwideus in Maine. 

 It occurs usually on or adjacent to willows and the variety common in 

 this state is probably developed on this plant or vegetation associated 

 with it. In other regions it seems to be much more variable but this 

 would suggest the possibility that there are in reality several closely 

 related species feeding on different plants but too much alike in appear- 

 ance to be separated where they occur together. 



The species has been taken at Westbrook (Stover) ; Orono Aug. 2nd 

 and 5th, adults, and North Harpswell Aug. 12th, Portland x\ug. 13th and 

 14th, Highmoor Farm Aug. 15th, Mt. Katahdin Aug. 22nd, Houlton 

 Aug. 24th and Ft. Kent Aug. 28th. 



Its occurrence upon plants of slight commercial value renders it of 

 little economic importance and it may be ignored in this respect. 



Deltocephalus productus Walker. 



Jassus productus Walker. List Homop. Ins. Brit. Mus. Ill, 891, (1858). 

 Deltocephalus bilineatus Gillette and Baker, Hemip. Colo. p. 85. 

 yrhis species has a distinctly acute head, the basis of Walker's name 

 productus, and there are two fulvus or brownish stripes across the pro- 

 notum and on base of vertex changing to black at the center and fol- 

 lowed by two black triangular spots that reach the front border con- 

 verging to the tip. General color light gray or S'traw with fuscous 

 spots in the apical cells of the elytra. Length 4 mm. 



This species seems to have been very rare especially in the eastern 

 part of the country as after the description by Walker it was not recorded 

 till the discovery by Gillette and Baker in Colorado. I have one speci- 

 men taken in Ohio and a specimen collected by Dr. C. ^I. Weed at 

 Hanover, N. H. I collected one specimen at 'Mar's Hill Aug. 2Sth on 

 the summit of the hill, also one specimen, Orono Aug., 1914. It doubtless 

 occurs on some kind of grass or sedge but the particular species is un- 

 known. 



