86 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



Iceloceras vittatum, new species 



Figure 5,6 



About 4 mm. iii length, elongate oblong oval, faintly shining, head 

 and pronotum smooth, very finely punctate, elytra coarsely and 

 densely punctate; pale yellow, the pronotum usually with a piceous 

 vittate lateral marking on each side, variable in length, sometimes 

 lacking, elytra with sutiiral and lateral deep brown vittae not joined 

 at apex, femora pale with a dark streak, tibiae and tarsi in middle 

 and posterior legs dark, tibiae of anterior pair with dark line, first 

 three or four antennal joints pale, remainder dark. 



Head smooth, shining, with distinctly marked frontal tubercles and 

 short elevated line running down from between antennal sockets; 

 entirely pale. Antennae with four basal joints paler than the piceous 

 or brown outer joints, 3d joint shorter than 4th. Prothorax a little 

 wider than long; with sides slightly curved; a semicircular transverse 

 depression on disk; surface faintly alutaceous and finely punctate; 

 pale yellow with reddish brown or piceous lateral vitta, sometimes 

 lackmg. Scutellum pale. Elytra pale with sutural and lateral brown 

 vittae not united at the apex; surface densely and coarsely punctate, 

 with no sign of costation. Epipleura vanishing at apical curve, last 

 two ventral segments dorsally black with a pale median area. Femora 

 pale with dark streak, anterior tibiae dark on one side, middle and 

 posterior tibiae and tarsi entirely dark, and tibiae with tiny terminal 

 spine. Middle tibiae in male notched. Length 4-4.5 mm.; width 

 1.7-2 mm. 



Type: Male, USNM 63360, and nine paratypes, from San Marcos, 

 Nicaragua, C. F. Baker collection (tlu-ough Knab). 



Other localities: Nicaragua: Chinandega, Baker collection. 

 Mexico: Jicaltepec, Vera Cruz; Tapachula, Chiapas, Hoge; San Rafale; 

 "Mexique." 



Remarks: This species is characterized by having vittate elytra, 

 with the vittae not united at the apex. There is no sign of the elytral 

 costation so common in the 6-spotted species. The specimen (one of 

 two) figured by Jacoby (1887) under Diabrotica sexplagiata and sent 

 to me by G. E. Bryant from the British Museum is this species, but 

 it does not have the usual dark piceous vittate marking on each side 

 of the pronotum, although there is a faintlj'^ marked vitta there. 



Iceloceras nymphaea (Jacoby) 



Figure 4,g 



Diabrotica nymphaea Jacoby, Biologia Centrali- Americana, Coleopt., vol. 6, pt 1. 

 p. 541, 1887. 



