The Genus Scaphoideus. 



195 



west to the plains region. It is a well marked species, and 

 apparently subject to very little variation. While in some 

 respects similar to jucundus ) and apparently referred to by 

 Uhler as a variety of that species, the striking orange marks, 

 the deeply cleft female segment, and the point of origin of 

 the nodal vein make it easily separable. 



Scaphoideus jucundus Uhler 

 (Plate IX, Fig. 2; Plate X, Fig. 3), 

 Scaphoideus jucundus Uhler. Trans. Md. Acad. Sci., I, p. 34 (1889), Van 

 Duzee, Can. Knt. XXI, p. n, 1889 (mention). 

 Van Duzee. Trans. Am. Exit. Soc., XXI, p. 300. 



Fulvous, elytra with numerous milky oval spots. Nodal 

 vein arising from the anteapical cell. Length to tip of elytra, 

 9 , 6-6.25 mm., d\ 5-5.25 mm. 



Vertex flat, slightly depressed, acute, edges thin; front 

 narrowing uniformly to clypeus. Elytra with claval veins 

 but slightly curved apically, and the transverse vein between 

 outer claval and claval suture indistinct. 



Color: Head, thorax and elytra rich, tawny yellow, a cen- 

 tral line on vertex, on pronotum,. and oval spots on elytra, 

 milky white. An obscure line bordering anterior margin of 

 vertex, and a more distinct one bordering the upper margin 

 of front, black. 



Genitalia: 9 , last ventral segment longer at middle than 

 at sides, nearly uniformly curved; pygofers short, with scat- 

 tered brown bristles a little thicker toward the tip. cT , valve 

 narrow, short; plates slender, acuminate, about half as long as 

 pygofers, with flaccid prolongations which reach about to tip 

 of pygofers. 



Uhler does not . state locality, but his description was 

 probably from specimens collected in Maryland. Van Duzee 

 gives records for Canada and New York. It was taken 

 abundantly at Ames, Iowa, in August and July. Specimens 

 in hand from the National Museum are marked " St. Agnes," 

 "Sept.," "Oct.," and "Nov.," on "Oak." One from Wash- 

 ington, D. C, Oct. (Heidemann). 



The vividly colored variety mentioned by Uhler would 

 seem to correspond with auronitens Prow, the different 

 structural characters of which have been noted. 



9 



