292 loiiMiciD/i:. 



its anterior niai-gin transverse or .slightly and widely cniarginate ; 

 anteiuial carina) aK\a_vs short and wide apart ; antenna; I'^-jointed, 

 stout, the scape long ; ey(^s placed somew hat to the front and above 

 the middle Inie of the head. Thorax short, laterally compressed 

 and slightly constricted about the middle, the sutures very distinctly 

 marked ; the pronotum convex or flat ; the mesonotum short and 

 raised above the level of the pronotum, often longitudinally sulcate. 

 Viewed frou) the side, the thorax isdeeplyand very widely emarginate 

 at the meso-metanotal suture : the metanotum is triangular, laterally 

 compressed, with a basal portion flat or slightly inclined to the 

 front, and airuncate apical lace often concave and curved inwards ; 

 the legs are long and robust. Pedicel 1 -jointed, with a conical or 

 scale-like node low and inclined forwards ; abdomen broadly ovaU 

 never produced anteriorly or overhanging the pedicel. 



Key to the Species. 



A. Mesonotuui not longitudinally stdcate above. 



a. Of large size : length over 5 nnn. ; head, 



thorax, legs, node of pedicel and ba^al 

 two abdominal segments black ; ab- 

 domen p( steriorly reddi>li vellow D. tsulcaticcps, p. 293. 



b. Much smiiller : length under o ram. ; head, 



thorax and node ot pedicel reddish 



brown ; abdomen and legs veUow D. bunnaniaii>, p. 293. 



B. Mesonotum more or less distinctly longi- 



tudinally sulcate above. 

 a. Head, thorax and abdomen wuth abundant 

 fine silky pubescence, but entirely with- 

 out erect bail's. 

 a'. Head and abdomen brownish ; thorax 



and leg^ yellow or reddish yellow .... D.fece, p. 294. 

 h'. Head, thorax and abdomen fuscous 

 brown or black ; legs dark castaneous 



red IJ. fnacua. p. :i94. 



/;. Head, tliorax and abdomen more or less 

 furnished with erect hairs. 

 a. Head finely punctured, pubescent and 



o] aque ; thorax very coarsely rugose . D. bituberculatuH^ p. 295. 

 v. Head smooth and shining, slightly 

 pubescent but not opaque ; thorax 

 less coaisely puuctured. 

 «-. Head and thorax reddish yeUow ; 



abdomen black 1). taprubmica, p. 296. 



b-. Head, thorax and abdomen con- 



eolorous. 



«■'. EaSiil portion of metanotum 



distinctly longer than the apical 



truncate portion ; length over 



3 mm D. affinis, p. 29li. 



h\ ]3a>al portion of metanotum 

 distinctly shorter than the apical 

 truncate portion : length under 

 3 mm 1). moijiirldtjtii, p. 297. 



