364 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



brown in color, exceptionally may be absent. Fifth tergite unusually 

 long (0.61 (0.73) mm.), 2.2 (2.0) times as long as the fourth (0.27 

 (0.36) mm.). 



Postabdomen testaceous yellow; epandrium very specialized, long 

 oval, without cereal emargination ; surstyli bifid, shining and trans- 

 parent testaceous yellow, dorsal lobes terminating in long, yellowish 

 brown spines which are very probably homologous to the anterior 

 pair of gonapophyses. These all are exceptional characters in this 

 genus. 



Female: Like male. Body 3.6 (3.8) mm. long (without ovipositor) ; 

 wings 4.1 (4.6) mm. long and 1.6 (1.9) mm. broad, 2.5 (2.4) times as 

 long as broad. 



Head 0.71 (0.79) mm. long, 1.18 (1.32) mm. wide, and 1.00 (1.09) 

 mm. high. Frons at vertex 0.52 (0.57), at anterior margin 0.39 

 (0.40) mm. broad and in median line 0.47 (0.51) mm. long. Post- 

 pedicel 0.27 (0.26) mm. long and 0.16 (0.16) mm. wide, 1.7 (1.6) 

 times as long as wide. Eyes in profile 0.82 (0.91) mm. high and 0.50 

 (0.54) mm. wide, 1.6 (1.7) times as high as wide (or long). Genae 

 below eyes 0.09 (0.09) and inferior part of postcranium in profile 0.13 

 (0.13) mm. wide. Thorax with scutellum 1.7 (1.9) mm. long and 1.3 

 (1.5) mm. wide, with the same characters as in male. 



Wings like those of male; first costal section 0.63 (0.64), second 

 1.25 (1.27), third 0.85 (0.86), and fourth 0.52 (0.54) mm. long. Basal 

 section of fourth longitudinal vein 1.00 (1.04), penultimate (between 

 both cross-veins) 0.32 (0.28), and ultimate 1.38 (1.43) mm. long. 

 Inner cross-vein 0.29 (0.32), outer cross-vein 0.59 (0.61) mm. long. 

 Anal cell with apical process 0.79 (0.82) mm. long, approximately 2.5 

 times as long as the apical process (0.32 (0.32) mm. long). 



Preabdomen 1.4 (1.4) mm. long and 1.4 (1.3) mm. wide, with two 

 rows of four lateral black spots that converge towards ovipositor 

 sheath; third to sixth tergites each marked with pair of lateral black 

 spots. Black spots on fourth and fifth tergites usually the largest, 

 black spots on third tergite smaller than that of sixth. Exceptionally, 

 black spots on third tergite may be completely absent. Sixth tergite 

 (0.28 (0.28) mm.) slightly longer than fifth (0.21 (0.22) mm.) in all 

 specimens examined. 



Ovipositor sheath entirely shining testaceous yellow, covered with 

 fine yellowish to dark brown hairs; strongly flattened dorsoventrally 

 (at the base only 0.16 (0.18) mm. high in profile) and slightly longer 

 (0.91 (0.93) mm.) than width (0.80 (0.86) mm.) at base, at apex only 

 0.36 (0.35) mm. wide. Apical part of ovipositor dorsoventrally 

 flattened, subshining and translucent testaceous yellow; in dorsal 

 aspect short lanceolate and slightly narrowed before tip. 



Type: ? 



Type locality: St. Vincent Island, British West Indies. Also 

 recorded from Paraguay (Hendel). 



