I50 AN ACCOUNT OF BRITISH FLIES. 



Section 8. — Diadocidmcz. 



Body bare, short. Head round, flat above, hairy in front. Pro- 

 boscis short; palpi 4-jointed, slender. Antennce 17-jointed, stout, 

 cylindrical, last joint small. Eyes reniform. Ocelli three, the 

 central one not much smaller than the others. Thorax nearly round, 



Fig. 34. — Wing and palpus of Diadocidia femigittosa. 



scutellum small. Abdomen 7-ringed, cylindrical. Legs stout, 

 pubescent : tibiae slender, armed with spurs at the tip ; posterior 

 tibiae with slender spurs. Wings broad, hairy, parallel in repose ; 

 first longitudinal vein very small ; second longitudinal vein springing 

 from the base of the first and ending before the tip of the wing ; third 

 longitudinal vein simple ; fourth forked, springing from a transverse 

 angular veinlet, sixth reaches the border. Metamorphosis un- 

 known. 



Macroneura, Macq. 

 Zett. 



,,.,.,. T^ , , ( Macronei 

 Genus Dtadocidta, Ruthe = J r. • -, 



\ Saara^ L 



This is the only genus in this section. 



{D. flavicans, Ruthe. 

 D. ferniginosa, Mg. ^\^- Winthemi, Macq. 

 \S. testacea, Zett. 



Tawny. Thorax with three brown stripes. Abdomen yellow or 

 yellowish-brown ; apex dark. Head and antennae brown, basal 

 joints, palpi and proboscis yellow. Legs yellow, brownish tarsi ; 

 posterior tibia; longer than tarsi. Wings grayish, with brownish veins 

 and gray hairs. Length li to 2 lin. This seems a doubtful British 

 species. Walker says it has been found by Mr, Haliday at Killarney. 



Literature on the Mycetophilidcc : 



1. Beitriige zur Naturgeschichte d. Insecten. Sitzburger d. Wien. 



Acad., vol. vii. Heeger. 



2. Annales des Sci. Nat., 2 s., vols. xii. and xiii. Memoire sur 



les metamor. d. plusieurs larves fungivores, etc. Dufour. 



3. Bemerkungen u. ein. Arten. Zweif Gattungen. Macrocera, etc. 



Isis, 1830. Stannius. 



