224 



PLATYPEZID^E. 



apicali. Alee vena ambiente nulla, cubitali simplici ; areola brachiali 

 utraque et anali completis, hac oblique acuminata, lobo axillari ro- 

 tundato (in Opetia et Platy enema fere obsolete). Abdomen segmen- 

 tis sex. 



Proboscis distinct. Antenna with the last joints forming a slender 

 arista, which is attached to the third joint as its tip. Wing with the 

 axillary lobe rounded, nearly obsolete in the geneva Platycnema and 

 Opetia; cubital vein simple; brachial veins without a spurious vein; 

 mediastinal vein usually distinct arid distant from subcostal, the latter 

 extending far beyond the middle of the costa, (but in Platycnema less 

 distinct and nearer to the subcostal.) 



The species of this family are all of small size. The genera 

 may be thus arranged : 



Discal areolet 



r distinct: f forked . 



Prsebrachial vein < 



(.simple . 



. 1. PLATYPEZA. 

 2. CALLOMYIA. 



ffoi 

 jin < 

 (.sii 



none: {forked .... 4. OPETIA. 



Preebrachial vein 



simple .... 3. PLATYCNEMA. 



Genus I. PLATYPEZA. 



PLATYPEZA, Mg. ill. mag. (1803) ; Fin. ; Mq. ; Ztt. ; Gr. Dolichopus 

 p., Fb. ; LI. ; Lm. 



Ala areola discali completa, vena prcebrachiali furcata, ramo anteriore 



obliquo prope cubitalem exeunte. Tarsi postici compressi. Oculi 



maris fronte contigui, foem. distantes. 



Body velvety. Head semicircular, somewhat depressed in front. 

 Labrum clavate, very short. Palpi spathulate, pubescent at the tips, as 

 long as the labium. Labium short, cylindrical. Antennae 6-jointed, 

 small, straight, porrect, approximate; first and second joints almost 

 cylindrical ; third somewhat longer, elliptical, compressed ; fourth and 

 fifth very small; fourth apical; sixth long, setiform. Thorax oval; 

 scutellum almost quadrate. Wings rather large, incumbent, flat and 

 parallel in repose ; middle transverse vein very near the base ; apical 

 transverse vein formed by an oblique anterior branch of the prcebrachial, 

 approaching very near to the cubital at the end, without meeting it. 

 Discal areolet complete. Halteres uncovered. Abdomen elliptical. 

 Anterior legs slender ; hind legs broad, especially the tarsi, whose joints 

 are almost equally long; first and second somewhat shorter; fifth 

 slender. Male. Eyes approximate. Fern. Eyes remote. 



The Platypeza inhabit woods, and are scarce ; their larvae live 

 in fungi. 



