50 



UNITED STATES NATIONAL MUSEUM BULLETIN 2 24 



on the basal three-fifths, the first double. Anterior 

 tibia bears short spines, except for 2 long, ventral, 

 stout, oblique ones located at the middle and outer fifth ; 

 there is a double dorsal row containing 20 or more, a 

 posterior row of 7 and an anterior row of 5 restricted 

 to the basal half. Tibial apex with several bristles 

 and a stout, rather bluntly pointed, straight spine, 

 apposed to metatarsal denticles. All tarsi end in long 

 pulvilli and stout empodium and sharp claws. 



Wings: Marginal cell open. Fourth posterior cell 

 open, narrowed to about two-thirds of its maxi- 

 mum width. Anal cell widely open ; second basal cell 

 ends in 2 veins with the middle vein short. Alula 

 large, ambient vein complete. 



Abdomen: The abdomen is robust, as wide as the 

 mesonotum on the basal tergites, its width slightly 

 increasing to the end of the fourth segment and obtuse 

 or truncate apically; basal tergites rather strongly 

 flattened. Seven tergites present in the male, the sixth 

 long, the seventh quite short. Pile of abdomen abun- 

 dant, short, coarse, appressed and setate, arising from 

 punctures and the abdomen almost uniformly micro- 

 rugose, with many small transverse fissurelike creases. 

 Sides of all the tergites with only short, appressed 

 setae. Bristles present only on the first tergite where 

 there is a single stout, rather short, spinous bristle. 

 Male terminalia moderately conspicuous but not large 

 or extensive; rotate one-fourth to the right and similar 

 to Chrysopogon. 



Distribution: Australian: Opseostlengis insignis 

 White (1914). 



Genus Chryseutria Hardy 



Cliryseutria Hardy, Proc. Linnean Soc. New South Wales, vol. 53, 

 pt. 4, p. 471, 1928. Type of genus : Chryseutria nigrinus Hardy, 

 1928, by monotypy. 



I quote Hardy's description. 



Antennae with four segments and a minute apical spine; 

 moustache confined to a row of oral bristles. Thorax with a 

 lateral spine just anterior to the transverse suture as in Chryso- 

 pogon: prothorax with ventral plate clearly defined; scutellum 

 without bristles. Abdomen rather long and parallel-sided, each 

 segment slightly bulging on the dorsal area ; genital spines of the 

 female conspicuous ; first segment with an apical lateral spine. 

 Legs with a spur on the anterior femora 1 . Wings with all mar- 

 ginal cells open. 



This genus differs from Chrysopogon and its allies in the 

 structure of the female genitalia and in the more generalized 

 type of abdomen being parallel-sided and more elongate, whereas 

 on Chrysopogon it expands from the base towards the apex. 

 From Thereutria and its allies it is distinguished by the presence 

 of the thoracic spine and again in the abdomen, that of Thereu- 

 tria tapering towards the apex. The genus belongs to the 

 Saropogonini. 



Description taken from 2 females. Length 14-15 

 mm. 



Distribution : Australian : Chryseutria nigrinus 

 Hardy (1928). 



This genus is readily distinguished in the female sex 

 from other Chrysopogonini by the combination of noto- 



1 Hardy undoubtedly meant anterior tibiae, not femora. 



pleural spine and acanthophorite spine. The males are 

 unknown. 



Genus Codula Macquart 



Figures 17B, 21, 410, 821, 830, 1637, 1642, 1664, 1918, 1964 



Codula Macquart, Dipteres exotique suppl. 4, p. 70, 1849. Type 

 of genus: Codula limbipennis Macquart, 1849, type by re- 

 mainder. Macquart included two undesignated species in 

 this genus. One has been removed to Brachyrrhopala 

 Macquart. 



Flies of medium size or smaller. Characterized by a 

 nearly straight face in which there is a shallow, trans- 

 verse depression or concavity on the lower third; pile 

 and bristles are absent except for a transverse fringe 

 along the epistomal margin and the antenna are excep- 

 tionally slender and elongate with apical spoonlike 

 microsegment. They have an extremely bare appear- 

 ance, but are short pilose and the abdomen has a true 

 pollinose surface and it is subclavate. The anterior 

 half of the wing is margined with brown, as in certain 

 wasps. The arched proboscis and the notopleural 

 spines are similar to Chrysopogon Roeder but the ab- 

 sence of a tibial spur at once separates them from this 

 genus. The venation is highly generalized with all 

 marginal cells, all posterior cells and anal cell open. 

 The only wing specialization appears in fused veins 

 at the base of the second posterior cell. Length 12 to 

 IS mm. 



Head, lateral aspect: Face unusually prominent, 

 slightly elevated and convex on the upper half, the ele- 

 vation is approximately equal at the epistomal margin 

 and there is a distinct transverse concavity between 

 them. The eyes are without either anterior or posterior 

 recession, are unusually flattened anteriorly and there- 

 fore only shallowly convex. The occiput is short, but 

 is slightly more prominent towards the foramen. It 

 is at least as prominent if not more extensively devel- 

 oped near the vertex, and the eyes both laterally and 

 dorsally are produced a considerable distance from the 

 occipital margin. Pile of the occiput restricted to 

 bristly hair or slender bristles on the lower portions, 

 and to distinct though slender bristles throughout the 

 entire lateral and dorsal border of the occiput; these 

 bristles form a narrow band of several irregular rows ; 

 they become more stout towards the vertex. Proboscis 

 directed straight downward in the 4 specimens before 

 me, unusually long, strongly compressed laterally; 

 much of its height is basal and in the middle the height 

 is due to the unusually high medial ridge which is 

 flared open basally. The posterior margin of the pro- 

 boscis is concave, the dorsal margin convex, the whole 

 structure attenuate apically and with a narrowly 

 rounded apex, which carries only 2 or 3 stiff, ventral 

 hairs. Palpus clearly of 2 segments, unusually large, 

 both segments robust and short, the first cylindrical but 

 with a distinct dorsolateral fissure, the second clavate 

 with many stiff bristles medially, ventrally, and ventro- 

 laterally, and with a large apical pore. 



