Head: Face with tubercle, not produced greatly anteriorly nor ventrally, yellow laterally with medial broad dark vitta, yellow pilose; gena linear, gena dark brown; frons normal, slightly produced anteriorly antennae base; frontal triangle yellow laterally with a medial dark brown joining facial vitta ventrally; vertical triangle black; holoptic; eyes bare, ommatidia uniform; antenna short, less than head width brown, brown; scape and pedicel about as long as broad, together about as long as basoflagellomere; basoflagellomere oval to slightly elongate, not more than 1.6 times as long as broad; arista basal, bare; occiput with 3–4 rows of cilia dorsally; occiput black, silver pollinose, withish–yellow pilose.
Thorax: Postpronotum bare; scutum black dorsally scutum without or with a very narrow medial pollinose vitta, reddish anterior to scutellum, with very short appressed pale pile; postpronotum yellow; notopleuron mostly yellow, brown laterally; supra-alar area and postalar callus brown; scutellum yellow, black basally, without ventral pile fringe. Pleuron mostly reddish–brown, except posterior anepisternum with yellow vitta and katepisternum with dorsal yellow macula, white pollinose; anepisternum bare on anterior flatten portion; katepisternum bare or with only short appressed pile posteriorly; metasternum bare; metathoracic pleuron bare; plumula absent; calypter bare, reduced, with short fringe. Legs: simple except metafemora with short black spinose bristles apically; metacoxa with pile tuft on posteroventral apical angle; entirely dark brown except tibiae yellow on basal 2/5 and femora yellow very apically. Wing: Wing membrane mostly hyaline; 2nd costal cell entirely microtrichose, sometimes bare on basal 1/5 or less, brown to black in females, almost hyaline in males, dark brown stigma and area around furcation of RS; apically microtrichose, cells CuP, CuA1, DM, R4+5, R2+3 and anal lobe bare basally, cell R1 bare except apically and medially in the brown area, cells BM and R entirely bare; vein R4+5 only slightly sinuate; vein M1 (apical crossvein) slightly recessive, strongly sinuate; posterior margin without black sclerotized puncta; alula normal, broad, partly bare.
Abdomen. 1st tergum not produced laterally into a spur, strongly petiolate, 2nd tergum 4 to 6 times as long as wide, flatten dorsoventrally, without marginal sulcus; 1st tergum black, yellow laterally; 3rd tergum black with basal broad yellow fascia (about 1/4 of tergum length); 2nd, 3rd and 4th terga black, sometimes with medial thin yellow vitta on posterior margin; sterna black. Male genitalia: globular, enlarged, 5th and 6th sterna modified to accommodate it; cercus enlarge; surstylus elongate; without lingua; aedeagus two–segmented; superior lobe free, articulate.
FEMALE. Similar to male except for normal sexual dimorphism and as follows: frons dark brown medially joining dark area of ocellar triangle, yellow laterally; 2nd costal cell entirely microtrichose, sometimes bare on basal 1/5 or less, brown to black; 4th and 5th terga black with lateral margins narrowly yellow.
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