108 EMPID^. 



Genus IX. RHAMPHOMYIA. 



Ehamphomyia, Hms. ; Mg. zw. iv. 43 (1822) ; Mq. ; Ztt. ; Ct. Empis 



p., Fb.; Gm.; LI.; Pz. ; Mg. kl. ; Fin. 

 Proboscis verticalis, capite loncjior. Antemm articulus tertius qjibito 



longlor. Vena cubitalis simplex ; vena externo-media 3 ; coxceftmo- 



ribus breviores. 



Head small, globose. Eyes large, elliptical. Proboscis long, vertical, 

 perpendicular. Labrum stout, longer than the head. Lingua flat, 

 lanceolate, as long as the labrum. Maxillse long, slender, acute, much 

 shorter than the lingua. Palpi clavate, pilose, much shorter than the 

 maxillae. Labium clavate, very slender at the base, as long as the 

 labrum. Antennae inserted in the middle of the face, contiguous at 

 the base, porrect, stout, pubescent, 5-jointed, not longer than the head; 

 first and second joints bristly ; first liueal- ; second globose, not half 

 the length of the first ; third long, tapering fi-om the base to the tip, 

 longer than the fifth ; fourth minute, cyathiform ; fifth longer, slender, 

 tapering. Thorax much broader than the head ; scutellum rounded. 

 Wings ample, incumbent and parallel in repose ; cubital vein simple ; 

 exter no-medial veins 3, arising from a discal areolet ; costal vein attenu- 

 ated round the posterior margin, but very faint there in most species. 

 Halteres rather large. Abdomen tapering. Legs longer ; hind legs 

 lono'cr and thicker than the anterior ; coxce shorter than the femora ; 

 tibife more or less clavate ; metatarsi sometimes dilated. 



Male. Eyes contiguous. Ocelli on a tubercle behind the eyes. 

 Abdomen clavate at the tip. 



Jem. Eyes remote. Ocelli on the crown. Abdomen acuminated at 

 the tip with 2 compressed hairy lobes. 



The RhamphomyicB resemble the Empides in habit, and the 

 species have nearly the same variations of structure. They may 

 be thus divided : — 



a. Body black or cinereous. 



b. Halteres white or pale. Species 1-6. 



b b. Halteres brown or black. Species 7, 8. 

 a a. Body partly or wholly pale. Species 9, 10. 



1. liigripesj Eb. e. s. iv. 405. 13 (1792); Mg. ! zw. iii. pi. 23. 

 ■f. 2; Mq. ; Ztt. — crassirostris, Eln. Anteimis nigris, thorace nigro- 

 qnadrivittato, alis limpidis, halteribus flavis. Mas. Cinerea, pedibus 

 nigro-fuscis. Poem. Cana, pedibus nigris. Long. 2-1—3 ; alar. 6-7 lin. 

 Clothed with black hairs. Proboscis, palpi, and antenna) black ; 

 first and second joints of the antennfc cinereous ; third lanceolate, longer 

 than the first and the second ; fifth about one-third of the length of 

 the third. Thorax icith 4 black stripes, the outer pair indistinct. 

 JJlngs colourless; stigma dark brown, narrow; veins l)lack, tawny 



