350 PROCEEDINGS OF THE NATIONAL MUSEUM vol. us 



Eccoptopsis quadriniaculata, uew species 



Figure 94 



About 7 mm. in length, oblong oval, shining, the elytra with a 

 bronzy lustre, in the male the third and fourth antennal joints swollen 

 and excavate near the end, and the front of the head excavate, elytra 

 strongly costate with punctures between, piceous with four large 

 pale yellow brown spots, the side margin and apex also pale; head, 

 breast, tibiae and tarsi and part of femora dark. 



Head in male with a deep excavation in the middle of the front 

 below the antennal sockets, a rounded shelf with a fringe of hairs 

 overhanging the transverse depression across the whole front on 

 either side, the upper half of head dark, the lower depression pale 

 yellow brown, labrum dark; head in the female with somewhat 

 swollen frontal tubercles, no carina below but a slight depression, 

 surface of lower front rugose with a slightly elevated median line; 

 frontal tubercles in the male more bulging than in the female. An- 

 tennae dark, in the male the basal joint swollen, second joint very 

 short, third and fourth joints widened and cut out, paler in color, 

 remainder long and slender, in the female the joints slender and the 

 third joint longer than the fourth, the last three pale. Pro thorax 

 about one-third wider than long with a deep curved transverse de- 

 pression, shining, pale yellow brown, obsoletely punctate. Scutellum 

 brownish. Elytra widened towards apex, shining, strongly costate, 

 the intervals geminate punctate with the punctures often confluent, 

 producing cross wrinkles between the costae; piceous with a bronzy 

 lustre, on each elytron two large pale yellow brown spots, one before, 

 the other, larger, and after the middle, the lateral margin in part 

 pale, the apex pale. Body beneath with the breast dark, the rest 

 pale, the femora pale with a dark streak, tibiae and tarsi dark. Length 

 6.8-7.5 mm.; width 3.2-3.6 mm. 



Type, male; three paratypes, female; USNM 66836, all from 

 Villavicencio, Colombia, collected by H. Dybas, July 12, 1938; another 

 specimen, AMNH, from Rio Guayuriba, Meta, Colombia, collected 

 by L. Richter, December 1946. 



Remarks : This species is a connecting link between the two genera, 

 Eucerotoma and Eccoptopsis, combining the deeply impressed trans- 

 verse sulcus of the prothorax that is typical of Eucerotoma with the 

 somewhat less deeply costate elytra of Eccoptopsis. In its coloration 

 it resembles more the species of the latter genus, and like them has 

 the thu-d joint of the female antennae longer than the fourth, which 

 is not the case in Eucerotoma. But as in Eucerotoma the anterior 

 coxal cavities are only slightly open. 



