VITTATE CHRYSOMELID BEETLES DISONYCHA — BLAKE 51 



very finely punctate, pale, with a sutural vitta joined at apex with a 

 narrow lateral-marginal vitta and a moderately wide median vitta. 

 Epipleura dark. Body beneath usually pale but often with the middle 

 or sides of the breast and sometimes sides of prosternum darkened. 

 Femora usually pale with a dark streak, in some specimens almost 

 entirely dark except at base, tibiae usually dark in apical half, tarsi 

 dark. Length 6.5 to 7 mm., width 3.2 to 3.9 mm. 



Type: Male, and foiu- paratypes, MCZ 29042, one paratype, USNM 

 61821, and one paratype, BM, all from Aracataca, Magdalena Prov- 

 ince, Colombia, P. J. Darlington. 



Other localities: Canal Zone: Red Tank, N. Banks; Barro Colo- 

 rado Island, J. Zetek. In MCZ (Bowditch collection) are four speci- 

 mens, of which the first is labeled Disonycha prolixa; two of these are 

 in the Donchier collection and are from "Colombie," and two are 

 without locality labels. 



Remarks: The markings of this species are somewhat similar to 

 those of D. prolixa Harold described from Argentina, but D. cordigera 

 is slightly larger and is darker beneath, usually with paler legs. The 

 aedeagus does not at all resemble that of D. prolixa. 



Disonycha annulata, new species 



Figure 62 



About 6 mm. in length, broadly oblong oval, shining, not at all 

 alutaceous, finely punctate; pale yellow; head with a dark marking; 

 pronotum entirely pale; elytra with sutural and narrow submarginal 

 vittae, not quite joining at apex, and a wide median vitta; body 

 beneath with breast and abdomen mostly dark, legs dark except 

 middle of tibia. 



Head with a dark occipital spot extending narrowly down to 

 tubercles and covering tubercles, a dark spot behind the eyes extending 

 on the outside about neck, carina more or less dark, labrum except 

 the edge dark, tubercles and carina rather prominent, a fovea on 

 each side near eye, head with interocular space half width of head. 

 Antennae dark, with the basal joints pale edged, shining, moderately 

 long. Prothorax approximately twice as wide as long, not very 

 convex, a slight oblique depression on each side near base, entirely 

 pale, shining, very faintly punctate. Elytra broad and somewhat 

 convex, shining, finely punctate, a moderately broad dark sutural 

 vitta not quite connecting with a narrow submarginal one, median 

 vitta broad and widening a little at apex, epipleura entirely pale. 

 Body beneath with breast and abdomen except about the extreme 

 edges dark, coxae palish, femora dark and shiny, the posterior ones 

 with coarse scattered punctures and sparse pubescence, tibiae with a 



