VITTATE CHRYSOMELID BEETLES DISONYCHA — BLAKE 15 



surface alutaceous and moderately densely and coarsely punctate. 

 Body beneath covered with short pale fine pubescence, in the one 

 specimen examined the breast alone dark, the femora pale, the 

 tibiae tending to be deeper brown and the tarsi brown. Length 7 mm., 

 width 3.8 mm. 



Type: Male, USNM 61808, from near Pard, Brazil, Miss H. B. 

 Merrill. 



Remarks: This is another of the species having costate elytra 

 especially marked in the female. It is closely related to D. bicarinata 

 Boheman and D. immaculata but is more densely and coarsely 

 punctate. In the one specimen examined the undersurface is not so 

 dark as in these other species, with only the breast dark. 



Disonycha yurimaguensis, new species 



Figure 3 



About 7 mm. in length, elongate oblong, alutaceous and feebly 

 shining; yellow; a dark band across occiput; pro thorax in one of the 

 two specimens 5-spotted, the other immaculate, and in a series of 

 five from Peru (in BM) all have immaculate prothorax; elytra with 

 moderately wide sutural and median vittae, not joined with the 

 submarginal vitta, body beneath with breast and basal part of abdo- 

 men dark, legs pale with a dark streak along sides of tibiae and dark 

 tarsi. 



Head with interocular space a little more than half width of head, 

 smooth over occiput except for a circle of punctures about fovea near 

 eye; frontal tubercles distinct, area between antenna! sockets broad 

 and rounded, not much produced, a dark band across occiput behind 

 eyes, the labrum dark. Antennae long, dark, with the thi-ee basal 

 joints pale edged. Prothorax about twice as wide as long with 

 curved sides, slightly depressed at base, on sides, and over scutellum, 

 not very convex, somewhat shiny, one specimen of the type series 

 entirely pale, the other 5-spotted, the lateral spots being the largest, 

 in a series from Peru (in BM) the prothorax entirely pale. Elytra 

 elongate, finely alutaceous, not very shiny and very finely and densely 

 punctate, a moderately wide, dark sutural vitta and a narrower 

 submarginal one not reaching the apex, the median vitta with a trace 

 of costa; epipleura in part dark. Body beneath with breast and base 

 of abdomen dark, femora pale, tibiae darkened along sides, tarsi dark, 

 the claw joint paler. Length 6.5-7.4 mm.; width 3.2-3.4 mm. 



Type: Male, MCZ 29037, and paratype, male, USNM 61809, from 

 Yurimaguas, Perd. 



Other localities: A series of five specimens from Peru in BM. 



Remarks: This is another species closely related to D. bicarinata 



