500 PROCEEDINGS OF THE NATIONAL MUSEUM vol.99 



Holotype male, allotype female, U. S. N. M. No. 58820, and two 

 male para types, Nairobi, British East Africa. N. L. H. Krauss, April- 

 May 1936 (Kr. 7), from fruits of Teclea tnchocarpa; one male para- 

 type, Nairobi, British East Africa, May 1936, N. L. H. Krauss, from 

 fruits of Brucea antidysenterica. (Two male paratypes of the first 

 series retained in the South African National Collection of Insects.) 



Length, male 4.6 mm. (small male 4.0 mm.), female 4.5 mm.; wing, 

 male 4.6 mm. (small male 4.3 mm.), female 4.1 nnn 



Head, male (fig. 39, a) , length : height : width, 5.5 : 8 : 10, short, pale 

 yellow behind and below, deeper yellow above and in front; eye, 

 length 0.7 width, somewhat narrowed below; posteriorly broadly black 

 above, beard short, pale, a row of short, brownish, postorbital bristles, 

 postocellars brownish, inner verticals yellowish, the outers black; 

 frons very prominent and swollen anteriorly; seen from above there 

 is posteriorly a large, yellowish, subtranslucent vertical triangle on 

 which is the smaller ocellar dot, black between the ocelli ; also trans- 

 lucent are the elongate vertical plates, w^hich extend as far as the ante- 

 rior edge of the eyes bearing at the front end a moderate tubercle 

 Avith the very long, flattened, anterior upper orbital bristle, w^hich 

 ends in a relatively small, almost circular, dense black disc set at right 

 angles to the flattening of the stem; the disc is 0.2 mm. in diameter, 

 the total length of the bristle 1.35 mm., 0.9 width of head. The median 

 part of the frons betAveen the vertical plates is opaque, yellow in front, 

 becoming brownish yellow on each side of the vertical triangle ; the 

 anterior part before the disc bristles is vertical, and the lower orbital 

 bristles are absent; width of frons 0.7 length at vertex, 0.8 at antennae, 

 0,35 width of head; ocellars brownish, moderate; very slight, pale 

 IHibesceiice anteriorly and some longer, black on ocellar dot. 



Head, female, short, narrowed below, length, at antennae 5.5: at 

 epistome 4.0: height 8: width 10; frons yellow, moderately swollen 

 anteriorly and with slight, black pubescence, bristles normal, two 

 lower, two upper orbitals, ocellars strong; male and female, lunule 

 very short; antennae (both lost in female) O.C) face, second joint with 

 pale setae, third rounded at end, its width 0.6 length, arista short- 

 pubescent above; face wide, flat, yellow, grooves short, moderately 

 deep, cheeks and genae narrow, genal bristle very weak or not differ- 

 entiated in male, normal, black in female; epistome flat; proboscis yel- 

 low, in dry specimen labella apparently of moderate length, about 

 0.8 length of mouth opening which is rather large and squarish in 

 front; palpi yellow, normal, width 0.4 length. 



Thorax : Dorsum (fig. 39, ^>), brown to light ferruginous, moderate 

 gi-ay dust and pale yellow pubescence ; dark spots bare, shining, black 

 to blackish brown, yellow areas (dotted) bare, shining; bristles black, 

 normal, one mesopleural, pale hairs on propleura, scapulars pale yel 



