VITTATE CHRYSOMELID BEETLES DISONYCHA — BLAKE 21 



stout, witb pale basal joints. Prothorax almost twice as broad as 

 long, with curved sides and a slight depression over scutellum, moder- 

 ately convex, faintly alutaceous, shiny, very faintly punctate, pale 

 3^ellow with two dark spots anteriorly and traces of a median basal 

 spot and sometimes one on each side laterally. Scutellum brown. 

 Elytra faintly alutaceous and very finely punctate, shining, deep 

 reddish brown or piceous sutural, median, and submarginal vittae, 

 not uniting at apex, the sutural vitta scarcely reaching the apex. 

 Epipleura pale. Body beneath and legs pale, the tibiae at apex and 

 tarsi deeper brown. Length 5 to 5.5 mm., width 2.5 mm. 



Type: Male, and one male and one female, paratype, USNM 61810, 

 from Sapucai, Paraguay, collected in February by W. T. Foster; 

 paratype, male, in MCZ. 



Remarks: This appears to be similar to the North American species 

 D. arizonae Casey. The markings and aedeagus are similar, but it 

 is a smooth and not coarsely punctate beetle. 



Disonycha guatemalensis Jacoby 



Figure 31 



Disonycha guatemalensis Jacoby, Biologia Centrali-Americana, Coleoptera, vol. 6, 

 pt. 1, p. 312, 1884. 



Between 6 and 7 mm. in length, oblong oval, pronotum shining, 

 nearly impunctate, elytra faintly alutaceous and finely punctate ; pale 

 yellow; dark antennae; unspotted pronotum; elytra with moderately 

 narrow dark sutural vitta connecting with narrow submarginal vitta 

 at apex, median vitta not very wide; body beneath and legs except 

 sometimes tip of tibiae and tarsal joints pale. 



Head with interocular space about half width of head, a circle of 

 coarse punctures on either side of vertex, frontal tubercles marked by 

 a median groove, carina broad and somewhat produced, lower front 

 long, labrum browai, head otherwise pale except sometimes a faint 

 brownish spot on occiput. Antennae short, dark, except for paler 

 basal joints. Prothorax approximately twice as broad as long, mod- 

 erately convex, slightly depressed over scutellum, shining, impunctate, 

 without distinct spotting, although in some specimens very faint traces 

 of 5 spots, the middle one elongate. Elytra shining although faintly 

 alutaceous, finely but distinctly punctate, a narrow dark sutural vitta 

 joining at apex with submarginal vitta, and a median vitta not very 

 wide. Epipleura mostly dark. Body beneath entirely pale, legs pale, 

 with apex of tibiae sometimes darkened, tarsi dark. Length 6 to 6.9 

 mm., width 2.8 to 3.4 mm. 



Type: Not designated by Jacoby; cotypes in BM, also one in the 

 Jacoby material in MCZ (Bowditch collection), from Zapote, Guate- 

 mala. 



