SCENOPINIDAE OF THE WORLD 221 



Abdomen broad black-brown fading to red-brown posteriorly. 

 See figure for details of eighth segment and bursa. 



Length: Male body 5-5.5 mm., wing 3.5-4 mm.; female body 

 4.5 mm., wing 3 mm. 



Type-locality: Matapos, Southern Rhodesia; 21 September 1924 

 (R. H. R. Stevenson). 



Type: (MCSNM). 



Other specimens seen: Icf, Dares Salaam, Kenya, 18 November 

 1958-5 May 1959 (Lindner) Lindner's type of P. ajricana; Icf, 

 Cholo, Nyasaland (R. C. Wood); Icf, Ruo, Nyasaland, 13 May 1916 

 (R. C. Wood) both in (BMNH) ; 2 99, Aus, South West Africa, Jan- 

 uary 1930 (R. E. Turner) (BMNH). 



150. Metatrichia waterhousei (Paramonov), new combination 



Figure 144 

 Pseudomphrale waterhousei Paramonov, 1955, p. 640. 



This specimen from Australia definitely is a Metatrichia and not 

 Pseudomphrale as originally placed. It conforms in all ways to the 

 genus. The shape of the head, large mouthparts, scales on thorax, 

 robust body and genital structures, etc. leave no doubt as to its 

 position or identity. 



Length: Male body 5 mm., wing 3.5 mm. 



Type-locality: Killara, New South Wales; 20 January 1935 

 (D. F. Waterhouse). 



Type: (CSIRO). 



Genus Pseiidatrichia Osten Sacken 



Pseudatrichia Osten Sacken, 1877, p. 276. 

 Atrichia Schrank of Loew, 1866, p. 42. 



TyT e-s lecies Atrichia lomjurio Loew (monobasic) . The genus 

 Ps( iidatri 'hia Osten Sacken is characterized by a head that is longer 

 then high, a long slender thorax and abdomen and the cell R5 closed 

 before the end of the wing. 



The proper interpretation of this genus has been confused from the 

 beginning by Loew's mistaking the sex of the type of P. longurio as 

 the male of the species, whereas he was dealing with a female. This 

 led to the concept of the genus as one where the males had the eyes 

 widely separated instead of contiguous on the midline, separating 

 the front from the ocellar tubercle. This necessitated the creation 

 of such genera as Pseudomphrale. The fact that no use was made of 

 genital structures in identifying the species of the family has led to 

 the creation of many unjustified genera in the i)ast. The most useful 

 diagnostic characters are found in the shape of the head, wing venation, 

 the male terminalia, and the eighth sternum of the female. 



