28 U.S. NATIONAL MUSEUM BULLETIN 2 77 



patterns are widely distributed in North America and Europe and 

 are believed to be conspecific. 



Length: Male body 4.0-4.5 mm., wing 3 mm.; female body 

 4.5-5.5 mm., wing 3.5-3.7 mm. 



Type-locality : Europe. 



Distribution: Worldwide. 



8. Scenopinus glabrifrons Meigen 



Figure 9 



Scenopinus glabrifrons Meigen, 1824, p. 114. 



Scenopinus halterata Meigen, 1824, p. 113. 



Scenopinus orbita Meigen, 1824, p. 114. 



Scenopinus laevifrons Loew, 1857, p. 88. 



Omphrale glabrifrons var. surcoufi S^guy, 1920, p. 318. 



Scenopinus civiculus G. H. Hardy, 1933, p. 418. 



Paromphrale glabrifrons (Meigen). — Krober, 1937, p. 214. 



These are large flies similar to Scenopinus fenestrali^ but are easily 

 separated on the basis of the shining frontal areas of both the male 

 and female. Antennae elongate orange-brown at the base and darker 

 at the tip. Halteres are white (similar appearing flies with dark 

 halteres are Scenopinus vitripennis Meigen). Male ninth tergum with 

 smooth margins; female eighth sternum and bursa with minor charac- 

 ters. Paramonov (1955, p. 649) places glabrifrons in synonomy with 

 civiculus. 



Length: Male body 4.0-4.5 mm., wing 3 mm.; female body 

 4.5-5.5 mm., wing 3.5-3.7 mm. 



Type-locality : Europe — type-specimen lost. 



Distribution: Worldwide. 



9. Scenopinus griseus (Krober) 



Figure 10 

 Omphrale grisea Krober, 1913. p. 191. 



Male. — This small fly differs noticeably from most members of 

 this group, being considerably smaller and having very short swollen 

 antennae. It does, however, have the four-lobed condition of the 

 male genitalia placing it in this group. The abdomen has most of 

 the dorsal surface of segments 2-7 white. The wings have a brownish 

 cast and the halter knobs are white. 



Female. — Unknown. 



Length: Male body 2.5-2.7 mm., wing 1.8 mm. 



Type-locality: Gyon, Hungary. 



Holotype: (MNH) destroyed. 



Topotype: Male, Gy6n (Kertesz) (ZMUH). 



Other specimen examined : Gyon (NMV) . 



