13 



Front and legs essentially the same as in septempunctata. 



Head, collar, thorax and ground color of the primaries pure white. There 

 are seven distinct spots and two small basal dots on each primary, as follows : 

 three black spots in the t. a. region, extending in a diagonal line from the costa 

 to the inner margin ; whereas in all pure-white winged species except dis, the 

 second spot is almost directly beneath the costal spot, or basad of it. The 

 medial row contains only three spots, one on costa, one below the cell in the 

 submedian fold and one on the inner margin, the usual second spot being in the 

 transverse posterior region beyond the end of the cell. Secondaries : White, 

 somewhat suffused with fuscous, especially apically; and with a more or less 

 distinct, transverse, fuscous medial band. Some of the other white winged 

 Grotella species show a trace of the medial band on the hind wing, but the 

 present species is unique in usually possessing a distinct band. Beneath ; as in 

 harveyi, but the discocellular spot is not visible. 



Expanse: 25-26 mm. 



Genitalia: essentially as in septempunctata, but the vinculum is more 

 pointed, tapering gradually to a very decided point. The uncus is slightly 

 broader at the tip which is of the usual spoon-shape and possesses the dorsal 

 spine. The valves are quite different, as may be seen from the figure. 



This species is represented in the Barnes Collection from Pal- 

 merlee, and Babaquivera Mts., Pima Co., Arizona ; besides the types. 



Type localities and number and sexes of types: "Type $ ", Southern Ari- 

 zona, July 15-30, (PoHng), which we hereby designate the Lectotype. "Type 

 9", (Allotype), Wilgus, Cochise Co., Arizona. 



Grotella dis, Grt. (fig. 6). 



1883, Grt., Ann. Mag. Nat. Hist., (5), XI, 55, Grotella. 1883, Grt., Trans. 

 Kans. Acad. Sci., VIH, 55. Grotella. 1893, Sm., Bull. U. S. N. M., XLIV, 266, 

 Grotella. 1903, Hamp., Cat. Lep. Phal. B. M., IV, 96, pi. LVII, f. 10, Grotella. 

 1903, Holl., Moth Book, p. 220, pi. XXVII, f. 8, Grotella. 1912, B. & McD., 

 Cont. Nat. Hist. Lep. N. A., I, # 4, 11, pi. IV, f. 6, Grotella. 



Front and legs essentially the same as in septempunctata. 



Head, collar, and thorax same color as ground of primaries. Primaries : 

 pure white, black dots present or absent, usually small, often vestigial ; when 

 visible as in parvipuncta and hlanca. Secondaries : almost evenly suffused with 

 fuscous, presenting a dark appearance, somewhat paler toward the anal region. 

 Often a trace of a medial shade line, but very vestigial and difficult to see. Be- 

 neath : primaries heavily suffused with fuscous, only the fringe appearing white; 

 secondaries white, dusky along costal margin and with a trace of a vestigial 

 median band. 



This species is very closely allied to parvipuncta; but, as pointed out by 

 Barnes and McDunnough, easily separated by the white instead of cream-white 

 color of the primaries. 



Expanse: 22-27 mm. 



