298 NEARCTIC ERYTHRONEURA (hOMOPTERA) 



Erythroneura maculata var. maculata Gillette 

 Bibliographic reference same as for the species. 



Description of Type. — Ground color of scutellum and anterior parts ivory, 

 of tegmina yellowish hyaline: with the following scarlet markings; median 

 vitta on vertex, discal and two lateral large sjiots, besides two faint ones near 

 anterior margin, on pronotum, basal angles and apex of scutellum, three well- 

 separated spots on clavus, a spot at base of corium, an oblique streak over 

 front of costal plaque, spot between latter and clavus, three streaks along 

 sectors just posterior to costal plaque, and a line on cross-veins extending 

 slightly also on adjacent parts of sectors and apical veins; apical cells yellow- 

 ish fumose, a dark dot in base of fourth. Undcrsurface and legs stramineous 

 to yellowish. 



Length, 2.64 mm.; vertex: LM 7, LE 3.5, WA 10.5, WP 16.5, 0\ 5.5, OP 

 9, OH 15: pronotum: L 9.5, W 13: tegmen 13-54. (Type, a male.) 



There is considerable variation in the details of coloration of 

 this form, some specimens having the markings more broken up 

 into spots, but most of them showing a tendency for tlie marlvings 

 to Ijecome larger and fuse, tins being especially true of the spots 

 on clavus, vertex and pronotum. Markings of the last two div- 

 isions of the botly freciuently approximate the normal type for 

 leaf-hoppers of this group, namely three spots across rondure of 

 vertex, four between eyes, the central pair large and often fusing 

 Avith spots nearest them or extending to posterior margin of ver- 

 tex; for the pronotum, four spots near anterior margin, the 

 outer often forming lateral vittae, and a discal pair, frequently 

 uniting with each other and with median pair of anterior spots. 

 In highly colored specimens the face, pleura and legs may be more 

 or less tinged or spotted with red. About half of the specimens 

 have the upper two spots on clavus fused, this condition usually 

 l)eing accompanied by heavier coloring elsewhere. 



Specimens (2.64 to 3.03 mm.) other than the type examined 

 were collected at Plummer's Island, Hyattsville, Beltsville, and 

 Laur(>l, Maryland; Washington, and Anacostia, District of Col- 

 umbia; Deatl Run, Fairfax County, and Maywood, Alexandria 

 County, Virginia; Oxford, Indiana, and Iowa City, Iowa, [W. L. 

 M.]; Washington, District of Columbia; Clarksville, Tennessee; 

 vSt. Louis, Missouri, and Onaga, Kansas, [U. S. N. M.]. 



Erythroneura maculata var. maculata Gillette, yellow form 



Like th(> preceding except Uiat the color markings are of varying shad(>s 

 of (greenish to orang{>) yellow instead of red. This being a generally paler 

 form the markings of scutellum and anterior parts often are merely translu- 

 cent ground color. 



