72 



EVOLUTION IN COLOR-PATTERN OF THE LADY-BEETLES. 



Genus CLEIS Mulsant. 



3069. CleiS picta Rand. 



Distribution: Northern United States and Canada. 



This species is certainly not congeneric with many of those placed in 

 Harmonia by Mulsant, as shown by the pronotal pattern, which shows 

 much more affinity to Adalia. The pronotal and elytral variation as shown 

 in figs. 73 and 74 is great and apparently continuous. 



FIG. 73. Variation of pronotal pattern of Hannonin picta. 6=mode. 



FIG. 74. Variation in elytral pattern of flai-inonia picta. e=mode; b, c, from Tyngshoro. Massachusetts; 

 d, e,f, from Wisconsin; (/, li. from New Jersey; /, from New Mexico. 



Var. blanchardi, n. var. 



Elytra without black pigment. Throughout the range. Named in honor of Mr. F. 

 Blanchard, who has kindly called my attention to the fact that this is not a 

 sex difference. The former view that this spotless pattern was that of the 

 male arose from the fact that it is much more numerous among the males. 



Form A. 



Pattern reduced to a few small marks, as in fig. 74, a and b. Two specimens from 

 Tyngsboro, Massachusetts. It is improbable that this form is limited to 

 Massachusetts. Similar vigilance should reveal it elsewhere. 



Form minor Casey. The costal spot at ;i confluent with the vitta and margin (fig 75). 



Form contexta Mulsant. Basal band continues from vitta to suture. 



Form concinnata Mulsant. The elytra nearly black. 



FIG. 75. Elytral pattern of 3 Western specimens of Ilarmonia />icta. <i, from Paradise Park; /), from 



Washington; c from Vela Pass, Washington. 

 FIG. 76. Variation in pronotal pattern in Harmonica hudxonica. a, from Carrs Peak; !>, from Palmetz, 



Arizona; c, from Whitefish Point, Lake Superior; <I, from Marqnette, Michigan. 



Subspecies of Pacific Coast characterized by form minor and intergrades 



to it. 

 Subspecies of New Jersey characterized by the presence of the very 



dark patterns. 



3069 a. Cleis hudsonica Casey. 



Distribution: Boreal Zone in Canada, Wisconsin, Michigan, Mount Wash- 

 ington, New Hampshire, and Black Mountain, North Carolina. 



The variation, while considerable, as shown in figs. 76 and 77, is appar- 

 ently continuous. It does not intergrade with C. picta, for the pattern is 

 made up of different elements. 



