1965] 
Werner — Ischyropalpus 
205 
slightly oval and feebly confluent longitudinally. Pubescence similar to 
head but tactile setae longer, ca. 0.04 mm. Scutellum pale. Elytra sub- 
parallel, 1.73 mm long, 0.69 wide at the well-defined humeri, 0.90 
maximum. Surface shiny but very feebly punctulate, the small punc- 
tures 0.03 mm from center to center, slightly papillate, especially to- 
ward base. Omoplates feebly elevated; suture feebly elevated behind 
middle. Setae moderately dense, fine, appressed, 0.05 mm long; tac- 
tile setae suberect, almost straight, 0.04 mm. The general color of the 
elytra is dull luteous but the base from humeri to and including omo- 
plates is brown, the suture here narrowly slightly paler. An obscure 
brown strip extends from near the suture in this brown zone to a 
crescentric marking on each elytron 0.90 mm from base and ca. 0.26 
mm wide. The suture is pale for ca. 0.17 mm between the posterior 
markings and the strips, the boundaries of this pale zone almost 
straight. It continues obscurely into the basal area. 
Mesosternum and ventral portion of mesepisterna smooth and shiny, 
the former quite narrow laterally. Mesepimera very narrowly exposed 
along edges of mesepisterna. Abdomen finely punctured and sparsely 
pubescent, the first visible sternum shiny, the rest feebly microretic- 
ulate. Legs, including front and middle coxae, dull luteous. Front 
femur 0.46 X 0.15 mm, front tibia 0.41 X 0.05, hind femur 0.56 X 
0.17. 
Holotype Paracatu, Minas Gerais, [brazil], VII-1960 - 86/60, 
Exp. Formosa Col., in Museu Nacional, Rio de Janeiro, Brazil. 
Ischyropalpus alvarengai, new species 
This species most closely resembles decoratus in general appearance, 
but it lacks elytral markings. The punctures on the pronotum are not 
confluent and the pubescence on the elytra is longer and coarser. If 
the single known specimen is typically colored, the coloration is dis- 
tinctive, as indicated in the key to the species of the group. 
Holotype $: Length 3.26 mm. Head subquadrate, 0.52 mm long, 
0.64 wide across eyes, 0.54 behind, with the tempora short but distinct, 
the temporal angles well-marked and the base very gently and evenly 
curved between them. The middle of the base is 0.17 mm from a line 
connecting the hind margins of the eyes. Disc slightly flattened, evenly 
covered with flat-bottomed punctures ca. 0.03 mm from center to 
center, the intervals smooth and shiny, and less than half the diameter 
of the punctures. The sculpture continues to the frontoclypeal suture, 
which is fine but well marked, and onto the clypeus, which is on the 
same curve as the frons. Setae appressed, ca. 0.05 mm long, tactile 
setae erect, 0.04 mm. All of maxillae and labium rufescent. contrast- 
