ART. L'8 REVISION OF DISONYCHA NORTH OF MEXICO BLAKE 37 



tinctly punctate; pale with the 2 anterior spots the most heavily 

 marked and closely placed, sometimes uniting with each other and the 

 median line ; the 2 lateral spots if present paler and large. Scutellum 

 dark. Elytra oblong, convex, humeri well marked, with short intra- 

 humeral sulcus ; surface somewhat shining, under high magnification 

 alutaceous, very indistinctly punctate; vittae only moderately wide, 

 the submarginal and sutural usually narrowly united. Body beneath 

 covered with dense pale pubescence; pale, the mesosternum and 

 metasternum dark except in some of the Arizona spcimens (quin- 

 querutata) ; in the pale eastern form {lodingi) the undersurface 

 often entirely pale; femora in darker specimens with a dark apex, 

 tibiae and tarsi dark. Length, 5.5 to 7 mm; width, 2.8 to 3.8 mm. 



Type locality. — Texas (as here restricted). 



Distribution. — New York (?); Texas (Anahuac, Brownsville, 

 CotuUa, Del Rio. Sarita, Victoria) ; Missouri. 



Food flant. — Aster. 



Remarks. — The specimen in the LeConte collection bearing the 

 label futnata., which may be regarded as the type, is from Texas, as 

 indicated by the dark red circle label, and is a dark specimen with 

 the frontal tubercles dark, the pronotal spots well marked, the me- 

 dian ones forming a triangle, the mesosternum and metasternum dark 

 and the abdomen and femora brownish. Four others, mounted two 

 to a pin on the long broad points characteristic of Morrison's col- 

 lection, bear Arizona labels. These are somewhat paler, with the 

 pronotal spots not so close together, and represent var. quinquerutata 

 (Schaeifer) described on page 39. 



D. fumata is one of the oval species and is readily distinguished 

 from both caroliniana and latifrons by its longer antennae, its nar- 

 rower interocular space, its long, dark labrum, and longer, narrower 

 prothorax. It occurs in the southern part of the United States from 

 Alabama and Texas to California, and is also found in Mexico. 

 There is a large series of it not separable by the aedeagus or any 

 other structural character in the National Museum collection with 

 the locality label " N.Y. collection of J. B. Smith ", but this label 

 may be incorrect. 



There has been considerable confusion concerning the name for this 

 species. Although Horn synonymized fumata with quinquevHtata, 

 from his description and from specimens labeled crenicolUs in 

 the Horn collection it is evident that he considered futnata as the 

 same as cre7iicollis. Mr. Schaeffer (1919) has come to the same con- 

 clusion, and has pointed out that crenlcoUis was described by Say 

 from Mexico. Say's description of the indented black pronotal lat- 

 eral " dot ", as well as the black venter, does not fit either fumufa 

 or latifrom, the two species most commonly found labeled cr-emcolUs 



