LEPTOPEZA. 117 



Genus XIV. LEPTOPEZA. 



Leptopeza, Mq. d. n. (1827) ; Ztt. Empis p., Fin. Ocydromia p., 



Mg. ; Ztt. 



Corpus parvuin, glabriculum, nitidum, subincurvura, molliculum. 



Color niger aut rufo-testaceus. Proboscis brevissima. Autenufc 



4-articulat0e ; articuli primus et secundus breves ; tertlus couicus ; 



cpiartus longus, setiforrais, apicalis. Thorax gibbosus, glaber. Alae 



longcE, angustfe ; vena cubltaUs simplex ; vena exteruo-media 2. Pedes 



omnes simplices, tibiis anticis muticis; coxce femoribm breviores. 

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



parum clavatus. 

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



tim recurvatus. 



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

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

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

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

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

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

 tibite slightly clavate ; hind metatarsi long, stout ; coxce shorter than 

 the femora. 



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

 Abdomen linear, hardly clavate at the tip. 



Fem. Abdomen elongate-fusiform ; oviduct exserted. 



This genus may be distinguished from Ocijdromia by the short, 

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

 almost cylindrical palpi, by the oblong- couical third joiut of the 

 autennte, 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 

 Lepioj)eza has more often the rudiment of a third externo-medial 

 vein. 



1. ruficollis, Mg. zw. ii. 353. 3 (1820); Zii.— glabricula /3, Fin. 

 Nigra, thorace rifo-testaceo, alls sublimpidis, abdomine subtus testaceo, 

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

 4i lin. 



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

 colourless ; veins and halteres tawny. Abdomen testaceous beneath 

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

 tarsi brown. 



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



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



