NOTES ON THE ETHIOPIAN FRUIT-FLIES — II. 25 



The Oriental species of the present genus are acrostacta, Wied., reinhardi, Wied., 

 -sumbana, EnderL, and probably also Tephritis euryptera, Bezzi ; of African species 

 .1 refer to it the following : — 



1. Platensina diaphasis, Bigot, Ann. Soc. Ent. France, lx, 1891, p. 384. 



Described from Assinia as an Oedaspis, there are in the collection two specimens 

 from the Gold Coast, Aburi, 1912-13 {W . H. Patterson). 



To the description of this West African species may be added : — ■ 

 Head entirely yellowish, immaculate ; frons narrower than the eye ; antennae 

 shorter than the face, the third joint rounded at tip, with a shortly plumose arista ; 

 cheeks and jowls linear ; proboscis thick. Cephalic bristles black, but the pvt. and 

 the outer vt. yellowish, those of the occipital row being yellow but rather acute at 

 end ; inner vt. very long and dark yellowish on their apical half ; oc. stout ; or. 

 2 + 3. Thorax and scutellum opaque, being clothed with a dense grey dust ; the 

 pleurae and the scutellar border are distinctly reddish ; the mesophragma is black, 

 rather shining, with a faint greyish dust. Thoracic and scutellar bristles dark 

 yellowish, but sometimes they are blackened at the extreme base ; the dc. are 

 placed before the line of the a. sa. ; scp. not distinct ; mpl. 1 ; pt. stouter than the 

 st. ; apical scutellar bristles about as long as the^basal ones, and decussate at the tip. 

 The short pubescence of the back is black ; the very large and flat, triangular 

 ■scutellum is bare on the disc, bearing some pale hairs on the sides. Abdomen 

 •shining black, with black pubescence and with short black bristles ; the narrow 

 sides of the first two segments and greater part of the venter are reddish ; 

 ovipositor of a shining blackish-brown colour, flat, 0'8 mm. long. Front femora 

 with 2-3 very stout and yellowish bristles beneath ; hind tibiae without distinct 

 row. Wings (PI. i, fig. 6) broad, with a distinct costal bristle and with a very 

 narrow axillary lobe ; 2nd and 3rd longitudinal veins very divergent towards the 

 end ; 3rd vein bare ; hind cross-vein straight, as long as its distance from the 

 small one or only a little longer ; small cross- vein placed beyond the middle of 

 "the discoidal cell ; lower angle of the anal cell acute and a little produced. 



Note. — The very characteristic Trypeta lunifera, Loew (Berlin. Ent. Zeits., v, 

 1861, p. 268, pi. ii, fig. 7), from Cafiraria, has the wings very broad and a bare 

 arista ; it is very doubtful whether it belongs here or not, because Loew does not 

 •say if the 3rd longitudinal vein is bristly or bare, and because its yellow pleural 

 stripes show probable affinity with the Ceratitinae. 



XXVI. Eutretosoma, Hendel (1914). 



The present genus was erected incidentally by Prof. Hendel in his great work 

 on the South American Trypaneids, with the type Eutreta oculata. I have adopted 

 this name here for the reception of some species which are distinguished by their 

 broad and rounded wings, but differ from the preceding ones in having very 

 numerous hyaline spots on the disc and in having a well developed axillary lobe ; 

 they have besides black spots on the face and on the frons, thus approaching the 

 American species of Eutreta. 



