388 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



Male: Length 4.9 mm.; wing 5.0 mm. long and 2.2 mm. wide, 

 2.3 times as long as wide. 



Head testaceous yellow except the yellowish white lunula, 0.82 mm. 

 long, 1.54 mm. wide, and 1.13 mm. high. Frons at vertex 0.63 and 

 at anterior margin 0.45 mm. wide, and in median line 0.48 mm. long, 

 1.3 tim.es as wide at vertex as long and but slightly longer than wide 

 at anterior margin; pseudopenicillata and irimttata (Lutz and Lima) 

 are the only loiown species in having two intensive testaceous yellow 

 longitudinal strips on the frons, forming a V-shaped marking (frontal 

 vitta intensive testaceous yellow except for a long triangular stripe in 

 front of ocellar plate, the apex attaining the lunula, which is as covered 

 with shining white dusting, as the ocellar, genovertical, parafacial, 

 and mesofacial plates). Oral margin raised and considerably promi- 

 nent. Antennae and mouthparts testaceous yellow, postpedicel 

 wide-oval, 0.25 mm. long and 0.18 mm. wide, 1.4 times as long as 

 wide; seta bare shining black except the thickened basal third, which 

 is translucent testaceous yellow; seta about three times as long as 

 postpedicel. Eyes in profile nearly two times as high as wide, very 

 sparsely beset with tiny erect and whitish hairs. 



Cephalic bristles brownish yellow and somewhat flattened; thi-ee 

 pairs of incurved lower orbital bristles; anterior pair shorter and 

 weaker. Two pairs of strong recurved upper orbital bristles, posterior 

 pair slightly shorter, anterior pair about as long as the divergent ocellar 

 bristles; inner vertical pair longest of all, strongly convergent, outer 

 verticals shorter and divergent. One pair of brown genal bristles 

 present. 



Thorax 2.2 mm. long and 1.6 mm. wide, ochraceous yellow in ground 

 color; mesono turn densely covered, except for bare and shining narrow 

 posterior margin, with whitish dusting and short whitish appressed 

 hairs; mesonotum with five distinct vittae of clear brass-yellow prui- 

 nosity: three middle ones almost linear (one m median line and two 

 in line of dorsocentrals) , and two lateral ones slightly wider than 

 these and connected with vittae on dorsocentral line at its anterior 

 origin and on transverse suture, bordering thus a whitish triangle and 

 ending in the lateral black spots near hind margin. The usual pair 

 of lateral black spots present on hind margin of mesonotum, each one 

 between upper pa and prsc bristles, and between and behind these a 

 double one, posteriorly limited by scutellar suture; one pair of black 

 dots, each one beneath the base of wing, below postalar callosity. On 

 mesonotum are tiny and shining transparent testaceous-yellow circles 

 at bases of the dorsocentral and prescutellar bristles, the others clear 

 yellow. 



Thoracic bristles long and strong, brownish yellow with golden shine; 

 two pairs of mesopleural bristles present, lower pair slightly shorter; 



