LEPTOPEZA. 117 



Genus XIV. LEPTOPEZA. 



LEPTOPEZA, Mq. d. n. (1827) ; Ztt. Empis p., Mn. Ocydromia p., 

 Mg. ; Ztt. 



Corpus parvum, glabriculum, nitidum, subincurvum, molliculum. 



Color niger aut rufo-testaceus. Proboscis brevissima. Antenna? 



4-articulata? ; articuli primus et secundus breves ; tertius conicus ; 



quartus longus, setiformis, apicalis. Thorax gibbosus, glaber. Ala3 



longa?, angusta? ; vena cubitalis simplex ; vena exter no-media 2. Pedes 



omnes simplices, tibiis anticis muticis; coxa femoribus breviores. 

 Mas. Plerumque longior, magis pilosus. Abdomen lineare. Anus 



param clavatus. 

 Fcem. Glabricula. Oviductus exsertus, compressus, gladiiformis, arcua- 



tim recurvatus. 



Body small, smooth, shining, soft, slightly curved, black or reddish- 

 testaceous. Proboscis very short. Antennae 4 -jointed ; first and second 

 joints short ; tliird conical ; fourth long, setiform, apical. Thorax 

 gibbous, very smooth. Wings long, rather narrow ; cubital vein simple ; 

 externo-medial veins 2, arising from the discal areolet. Halteres clavate. 

 Abdomen cylindrical. Legs slender, without spines or bristles ; hind 

 tibia? slightly clavate ; hind metatarsi long, stout ; coxae shorter than 

 the femora. 



Male. Body generally longer and more hairy than that of the female. 

 Abdomen linear, hardly clavate at the tip. 



Fern. Abdomen elongate-fusiform ; oviduct exserted. 



This genus may be distinguished from Ocydromia by the short, 

 oblique, or less perpendicular proboscis, by the thick, porrect, 

 almost cylindrical palpi, by the oblong- conical third joint of the 

 antennae, by the setiform apical joint, and by the ensiform ovi- 

 duct of the female. It is like Ocydromia in its habits. The 

 structure of the veins is almost similar in both genera, but 

 Leptopeza has more often the rudiment of a third externo-medial 

 vein. 



1. ruficollis, Mg. zw. ii. 353. 3 (1820) ; T&t.glabricula 0, Fin. 



Nigra, thorace rufo-testaceo, alis sublimpidis, abdomine subtus testaceo, 

 pedibus flavis, tibiis posticis apice tarsisque fuscis. Long. 2 ; alar. 

 4* lin. 



Black. Thorax reddish-testaceous, very shining. Wings almost 

 colourless ; veins and halteres tawny. Abdomen testaceous beneath 

 and on each side. Legs yellow ; hind tibia? towards the tips and 

 tarsi brown. 



Eare. In Mr. Haliday's collection. (I.) 



2. flavipes, Mgle. j Mg. zw. ii. 353. 4 (1820) ; Mq. ; Ztt. Nigra, 



