292 FOBMICID^K. 



its anterior margin transverse or slightly and widely emarginate ; 

 antennal carinaj always short and wide apart ; antennae 12-]ointed, 

 stout, the scape long ; eyes placed somewhat to the front and above 

 the middle line 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 from the side, the thorax is deeply and very widely emarginate 

 at the meso-rnetanotal suture ; the metanotum is triangular, laterally 

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

 front, and a truncate 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 oval, 

 never produced anteriorly or overhanging the pedicel. 



Key to the Species. 



A. Mesonotum not longitudinally sulcate above. 

 . Of large size : length over 5 mm. ; head, 



thorax, legs, node of pedicel and basal 

 two abdominal segments black ; ab- 

 domen pi steriorly reddi.-h yellow D. sukaticeps, p. 293. 



b. Much smaller: length under *3 mm.; head, 

 thorax and node of pedicel reddish 

 brown ; abdomen and legs yellow D. burmanicus, p. 293. 



B. Mesonotum more or less distinctly longi- 



tudinally sulcate above. 



a. Head, thorax and abdomen with abundant 



fine silky pubescence, but entirely with- 

 out erect hairs. 

 a'. Head and abdomen brownish ; thorax 



and leg.? yellow or reddish yellow .... D.feoe, p. 294. ' 

 V. Head, thorax and abdomen fuscous 

 brown or black ; legs dark caslaneous 

 red jr> fuscus, p. 294. 



b. Head, thorax and abdomen more or less 



furnished with erect hairs. 

 '. Head finely punctured, pubescent and 



opaque ; thorax very coarsely rugose . D. bituberculatus, p. 295. 

 b. Head smooth and shining, slightly 

 pubescent but not opaque; thorax 

 less coarsely punctured. 

 a 2 . Head and thorax reddish yellow; 



abdomen black 2). taprobanee, p. 296. 



o-. Head, thorax and abdomen con- 



folorous. 



o 3 . Basal portion of metanotum 

 distinctly longer than the apical 

 truncate portion : length over 



., 3mm. : D. affinu, p. L>9(>. 



o . -tJat-al portion or metanotum 

 distinctly shorter than the apical 

 truncate portion : length under 

 3 mm -D. moffffridffei, p. 297. 



