VITTATE CHRYSOMELID BEETLES DISONYCHA — BLAKE 39 



with two round deep brown spots anteriorly, and in one specimen 

 three other very faint spots, two lateral and one elongate median 

 spot; elytra with narrow dark brown sutural vitta joining at apex 

 with narrow submarginal one, also a narrow median vitta; the body 

 beneath and legs entirely pale. 



Head entirely pale except the deeper reddish brown mouthparts 

 and faint occipital spot, interocular space more than half the width 

 of the head, occiput smooth and shiny, a circle of punctures on either 

 side of vertex, frontal tubercles deeply marked by a median groove, 

 carina short and broad. Antennae deep brown with the three basal 

 joints paler. Prothorax twice as wide as long, not very convex, with 

 a faint depression over the scutellum, surface moderately shiny, very 

 finely punctate, two deep brown roundish spots anteriorly and traces 

 of two lateral round ones and a median elongate one. Elytra broad 

 and not very convex, faintly alutaceous and very finely punctate, 

 pale yellow, with a narrow, deep brown sutural vitta joining at the 

 apex with a narrow lateral one, also a narrow median one, epipleura 

 pale, sometimes with brownish edge. Body beneath entirely pale 

 with moderately dense pale pubescence; legs pale, the tarsal joints 

 deep brownish. Length 5.8-6 mm.; width 3 mm. 



Type: Male, and one paratype, female, USNM 61815, collected on 

 savannas at Acarigua, Portuguesa Province, Venezuela, by H. Pittier; 

 one paratype, male, in MCZ. 



Remarks: There are only three specimens of this small pale species 

 known. The aedeagus resembles somewhat that of D. spilotrachela 

 Blake of the West Indies. A single specimen, a female, in BM 

 (Fry collection), from Bahia, Brazil, may be this species. 



Disonycha spilotrachela Blake 



Figure 6 

 Disonycha spilotrachela Blake, Bull. Brooklyn Ent. Soc, vol. 23, p. 96, 1928. 



Between 5 and 6 mm. in length, oblong oval, somewhat shiny 

 although faintly alutaceous, elytra finely punctate; pale yellow; head 

 with a pointed dark occipital spot; prothorax 5-spotted; elytra with 

 a narrow sutural and submarginal vitta, united at apex, and a median 

 vitta; the body beneath and femora pale, anterior femora dark streaked 

 and the tibiae darker at tip, tarsi and antennae dark. 



Head with interocular space fully half width of head, pale with a 

 dark and usually pointed occipital spot and dark mouthparts, a circle 

 of coarse punctures on either side of front near eye, tubercles well 

 marked, a broad, rounded, but short carina. Antennae dark, with the 

 tlu-ee basal joints with a pale edge. Prothorax about twice as wide 

 as long, somewhat convex with a slight depression over scutellum, 

 smooth, impunctate, somewhat shiny, pale with four dark spots 



