VITTATE CHRYSOMEIJD BEETLES DTSONYCHA — BLAKE 17 



Other localities: United States: Tennessee to Colorado and 

 southwards, I), pluriligata var. j^ura (LeConte) in Arizona and Cali- 

 fornia. Mexico: Kosario, Sinaloa, J. A. Kusche; Los Mochis, Sinaloa, 

 M. Marquis; Tamazunchalc, iSan Luis Potosi, C. and P. Vaurie; 

 Tuxpan, W. M. Mann; 5 miles south of Acaponeta, Nayarit, H. B. 

 Leech; Catavina, Baja California, Michelbacker and Ross. 



Remarks: In my earlier treatment of Disonycha in the United 

 States I synonymized D. cajntata Jacoby with D. pluriligata var, pura 

 (LeConte), basing this chiefly on the specimens from "North Sonora, 

 Mexico" (really from Arizona) collected by Morrison that were in the 

 Bowditch collection of Jacoby's material. Since then I have exam- 

 ined specimens from the other localities given above in Mexico and 

 believe that Jacoby must have had both the forms, as he gives also 

 Tuxtla and Cosmaloapam, Mexico, and El Zapote, Panz6s, Guate- 

 mala. This species is allied to D. latiovittata Hatch, and is of the 

 alternata group that occurs on willow. 



Disonycha latiovittata Hatch 



Figure 13 



Haltica puncticollis LeConte, in Reports of explorations and surveys to ascertain 

 the most practicable . . . route for a raih'oad from the Mississippi River 

 to the Pacific Ocean, vol. 9, No. 1, Insects, p. 67, 1857 ( = vol. 12, pt. 3, p. 67, 

 1860; type in LeConte collection, MCZ; not Haltica pundicoUis Kirby, 1837). 



Disomjcha puncticollis Gemminger and Harold, Catalogus Coleopterorum, p. 3497, 

 1876.— Centner, Canadian Ent., vol. 58, p. 149, 1926, 



Disonycha quinquevittata Horn, Trans. Amer. Ent. Soc, vol. 16, p. 203, 1889 

 (in part), 



Disonycha quinquevittata var, puncticollis Schaeffer, Journ. New York Ent. Soc, 

 vol. 39, p. 280, 1931. 



Disonycha latiovittata Hatch, Pan-Pacific Ent., vol, 8, No. 3, p, 108, 1932.— Blake, 

 Proc. U. S. Nat. Mus., vol, 82, art. 28, pp. 23-24, 1933. 



Between 6 and 7 mm. in length, broadly oblong oval, somewhat 

 shiny, pro thorax densely punctate; pale; head with labrum and often 

 occiput dark; pronotum with 4 or 5 spots; elytra with sutural, median 

 and submarginal vittae, usually metasternum in. middle; apex of 

 tibiae and tarsi dark. 



Head with interocular space slightly more than half width of head; 

 carina not acute, broad and produced, frontal tubercles somewhat 

 swollen, well marked; coarsely and rugosely punctate; pale, with 

 labrum, sometimes also tubercles and occiput, dark. Antennae 

 stout, dark, with paler basal joints; third joint shorter than fourth or 

 fifth which are subequal, the fourth slightly longer. Prothorax twice 

 as broad as long, not very convex, with a callosity on each side on 

 basal half and slight median depression near base ; somewhat narrowed 



319188—55 3 



