VITTATE CHRYSOMELID BEETLES DISONYCHA — BLAKE 55 



Other localities: Venezuela: Caracas, El Valle, D, F., C. H. 

 Ballou, on Cajanus hicolor. Colombia: Rio Frio, Magdalena Prov- 

 ince, P. J. Darlington. Panama: Alhajuelo, A. Busck; Bocas del 

 Toro, W. Robinson; El Valle, N. L. H. Krauss; Tobago Island, H. F. 

 Dietz; XX Plantation, H. F. Dietz and J. Zetek; Canal Zone, C. H. 

 Richardson; Smnmit, N. L. H. Krauss; Juan Mina Plantation, H. F. 

 Dietz and J. Zetek; Paraiso, E. A. Schwarz. 



Remarks: This species is of the same group as D. aplicata and D. 

 cratera from farther south in South America. All three species have 

 in common a large size, dark coloring, and coarsely punctate surface. 

 Specimens from Venezuela have a dark banded pronotum, those from 

 Colombia and the Canal Zone appear to be simply spotted on the 

 pronotum. The specimens from the Canal Zone, representing 

 possibly a subspecies, are considerably smaller than those collected 

 by Dr. Darlington in Magdalena Province, Colombia. All, however, 

 unlike D. aplicata or cratera, have the distinguishing longitudinal 

 depression down the side of the elytra with a crease above the margin. 



Disonycha aplicata, new species 



Figure 53 



About 7 mm. in length, elongate oblong oval, not very shiny, alu- 

 taceous and rather densely and coareely punctate; head, undersurface, 

 and legs entirely dark; pro thorax pale with a broad dark band; 

 elytra with wide dark sutural and median vittae and narrow marginal 

 vitta joining sutural vitta at apex. 



Head with interocular space more than half the width of head, 

 lower front short, entirely dark, moderately densely and coarsely 

 punctate over occiput, frontal tubercles a little swollen and smooth, 

 area between antennal sockets bluntly produced. Antennae dark 

 except the three pale-edged basal joints. Prothorax not quite twice 

 as broad as long, with curved sides, moderately convex, a slight 

 depression on the sides near base, alutaceous and moderately densely 

 and coarsely punctate; a broad piceous band extending across nearly 

 to the margin. Elytra elongate, surface alutaceous, moderately 

 coarsely and densely punctate, a wide dark sutural vitta and a median 

 vitta, a narrow marginal one joining at apex rather widely with the 

 sutural vitta. Body beneath and legs entirely dark and covered with 

 fine, short, pale pubescence. Length 7.3 mm., width 3.7 mm. 



Type: Male, MCZ 29045 (Bowditch collection, 2nd Jacoby collec- 

 tion), bearing the label Paraguay. 



Remarks: This is very similar in markings to D. venezuelae Jacoby 

 but does not have the lateral depression on the elytra as in that 

 species. The aedeagus is wholly unlike that of D. venezuelae. 



