45 



DESCETPTION. 



Male. — A minute black bronzed insect, 1.9 mm. long, with the 

 abdomen blotched with white at base. 



Head bronzed greenish black, thickly coarsely punctured on all 

 the exposed surfaces, convex before wdthout frontal grooves, concave 

 behind, .64 mm. wide by .68 mm. in vertical depth ; eyes and ocelli 

 dull red, the former oval in outline, the posterior margin more 

 convex than the anterior, broadest above the middle, r^l mm. in 

 vertical diameter, ,15 mm. in antero-posterior : ocelli in a triangle 

 on the vertex, lateral ones a little nearer to the eye than to each 

 other. 



Antennae inserted below the middle of the front, 1.4 mm, long, 

 13-jointed, counting the minute third and fourth joints and not 

 including a minutely rudimentary apical one ; four basal joints 

 yellpw, remainder black, joints from the fifth to the tip densely 

 clothed with erect black hairs, each segment with a ring of a few 

 long appressed yellow hairs; the scape or first joint is about .3 mm. 

 in length, second joint one-third that length, third and fourth 

 minute, measuring together about .03 mm., visible only under 

 a high power, the fifth measuring .11 mm. in length. The 

 joints from the fifth to the tenth are slightly compressed, and 

 gradually decrease in length ; the eleventh, twelfth and thirteenth 

 joints are more closely united, forming a cylindrical club with a 

 pointed tip, the thirteenth joint being conical. The first joint of 

 the club is about equal to the joint preceding. The minute apical 

 process is about .06 mm. in length. 



The thorax is .9 mm. in length, about half as wide in front as 

 long, widest between bases of front wings, where it measures .fc'3 

 mm. Color bronzed greenish black on all surfaces, densely 

 coarsely punctured everywhere, like the head, and provided, as is 

 the head, with scattered minute yellowish hairs. Thoracic [sutures 

 are deeply impressed. Prothorax with hind margin deeply concave, 

 and sides with deep obliquely vertical grooves. Mesothorax with 

 straight transverse sutures in front of the scutellum ; parapsidal 

 grooves extending half way to this transverse suture. Sides of 

 mesothorax widely excavated obliquely forward and upward from 

 the coxee. Scutellum somewhat vaulted, narrowed forwards, post- 

 scutellum narrow. Mesonotum declivous, convex from side to side, 

 dorsal outline nearly straight. 



Wings coarsely hairy throughout; front wings 1.4 mm. long, .64 

 mm. wide at widest part, hind wings .1 mm. in length ; stigmal 

 branch of fore wing nearly as long as costal vein, expanded at tip ; 

 postcostal vein vanishing insensibly towards tip of wing. Very 

 slight traces of median and submedian veins may be made out by 

 close examination. 



Legs slender, posterior pair longest, ends of tibia? nearly attain- 

 ing the tip of the abdomen ; spurs of middle tibiae stout, curved at 

 tip, nearly as long as first joint of tarsi. Tarsi all similar, spinous 

 beneath, first joint longest, others shortening to the fourth, the fifth 

 about as long as the second. Tibiae all white, tarsi white except 



