150 



Annals of the South African Museum. 



of rest ; pleural appendages two, strong and powerful, directed inward 

 and dorsad, the dorsal appendage a simple curved hook that is strongly 

 chitinised at the apex ; ventral appendage flattened, the outer angle 

 produced into a finger-like lobe that bears a few hairs, longest at the 

 apex. 



Genotype, Platylimnobia barnardi, sp. u. (Southern Ethiopian 

 region). 



PLATYLIMNOBIA BARNARDI, sp. n. 



Wings rudimentary in both sexes ; thoracic dorsum very flattened ; 

 coxae enlarged ; colouration brownish-yellow, the thorax with a brown 

 dorso-median stripe. 



Male. Length 4'6-5'3 mm. 



Female. Length 4'5 mm. 



FIG. 1. Platylimnobia barnardi, sp. n. Lateral aspect of the head 

 and thorax, the legs being removed 



Rostrum short, dark brown ; palpi dark brown. Antennae with the 

 first segment brown, somewhat darker at the tip ; second segment dark 

 brown but not so deeply coloured as the flagelhun, the segments of 

 which are provided with numerous pale hairs and a few bristles. Head 

 large, rounded, dark brown with a sparse bloom. 



Mesouotal praescutum narrow, small, light brownish-yellow with a 

 broad dark brown median stripe ; anterior margin and the pronotal 

 scutellum shiny ; scutal lobes indistinct, yellowish ; scutellum small, 

 quite indistinct, brownish-yellow ; postuotum elongate, similar to the 

 scutellum in colour. Pleura brownish anteriorly, more yellowish behind. 

 Halteres pale. Legs with the fore and middle coxae brownish, the 

 hind coxae yellowish ; trochanters yellowish ; femora dark brown, a 

 little paler basally ; tibiae and tarsi dark brown. Wings dull yellow 

 with an indistinct venation. 



Abdomen brown. The hypopygium of the male as described under 

 the generic characterisation (Plate XIII, fig. 45). Ovipositor with the 

 sternal valves powerful, almost straight ; tergal valves more slender. 



Habitat. South Africa. 



