228 PROF. M. BEZZI. 



The possibility is not excluded that the above recorded Trypeta grata under 

 Carpophthoromyia), notwithstanding the much darker coloration of the body, may 

 belong to the present new genus, as suggested by the very similar shape of the head 

 and of the wing pattern. 



1. Leucotaeniella trispila, sp. nov. (Plate v, fig. 3). 



A very distinct, pale-coloured species, with yellowish banded wings and with 

 three very striking black spots on the postalar calli and scutellum. 



cj $. Length of body, 5 '5-6 mm. ; of ovipositor, 1 mm. ; of wing, 5 5-6 mm. 



Head entirely yellowish, without any dark spot, only the small ocellar dot 

 being black ; the lower occipital swellings, the face and the jowls whitish ; 

 all the bristles black ; the hairs on occiput whitish. In the middle of the 

 frontal stripe there is a less distinct, dark reddish, semicircular spot. Antennae 

 entirely yellow, even the arista. Palpi whitish, with pale hairs and a few 

 short black bristles at end ; proboscis dirty yellowish. Thorax entirely reddish 

 yellow ; on the back there is pale pubescence and whitish dust, which forms three 

 very indistinct darker longitudinal stripes ; the humeral calli, a broad, oblique 

 mesopleural stripe and two contiguous hypopleural spots are whitish or white ; 

 pleurae and mesophragma reddish, like the back ; behind the suture, there is on the 

 back a pale yellowish stripe on each side. On the postalar calli, just near the extreme 

 base of scutellum, there is on each side a deep black, opaque, rounded spot. 

 Scutellum shining pale yellowish ; its single apical spot is subquadrate, less visible 

 from above, filling out the space below and between the apical pair of bristles ; it is 

 shining black. All the bristles are black ; pleurae with whitish hairs. Halteres 

 whitish, with the base of stalk yellowish. Abdomen entirely reddish above, paler 

 below, with pale hairs and black bristles ; the transverse bands of whitish dust are 

 on hind borders of first and almost on whole of 3rd segment ; in the female there is 

 a band also on the 4th segment. Male genitalia shining black, with yellow base ; 

 ovipositor entirely reddish, darker at the end. Legs and coxae entirely and 

 uniformly pale yellowish ; all the bristles black. Wings hyaline, with yellowish 

 veins and the following yellowish pattern, margined with brown along the sides of 

 the bands on the hind half : A basal band, going obliquely from the stigma to the 

 end of the anal cell ; the stigma is yellowish, with a dark brown, rounded spot near 

 its base ; the costal cell is hyaline in the middle, the second basal cell is yellow. An 

 oblique band beginning after the stigma and separated from this, going over the 

 small cross- vein to the middle of the last portion of anal vein. From this band runs 

 a marginal stripe, which going along the fore border ends with a brown patch in the 

 middle between the ends of the third and 4th longitudinal veins ; along the costa 

 this band encloses 3-4 small hyaline spots, partly bordered with fuscous. From the 

 middle of this band runs an oblique streak, which, passing across the middle of the 

 last portion of the 4th vein, reaches the hind border a little below the end of this 

 last vein. Finally there is a broad edging to the hind cross- vein, which is widened 

 and more infuscated near the hind border, and ends above in a point near the 3rd 

 longitudinal vein. 



Type (J and type $ (British Museum), a single pair of specimens from Nyasaland, 

 Limbe, Chiromo' Ruo R., 22nd September 1916 {R. C. Wood). 



