236 



SYRPniDJE. 



181. Xylota oriiata, £run. 



Merodon ornatus, Brunetti, liec. Ind. Mas. xi, p. 232, pi. xiii, 

 fig-. 11, abdomen (1915). 



S . Head : vertex wholly occupied by a moderately elevated 

 feneous-blaek tubercle, bearing the three reddish ocelli. Frontal 

 triangle small, black, with a little yellowish-grey tomentum. Eyes 

 coutiguous for barely one-third of their total height, as viewed 

 from in front. Whole under side of head yellowish, with wiiitish 

 reflections, except the projecting face, which is sliining black ; 

 the oral margin verj-- narrowly reddish-brown. Autenme pale 

 brownish-yellow, the 1st joint the darkest, the 3rd with whitish 

 dust and a pale yellowish, basal, bare arista. Proboscis blackish. 

 Back of head a^neous-black, the upper ocular orbit with short 

 yellow hair, the outer and lower ocular orbits with whitish hair. 

 Thorax : dorsum dull reneous-black, mainly covered with short 

 yellowish hair, which however takes a golden-brown hue where it 

 forms two moderately broad dorsal stripes ; the yellow hair is a 

 little more prominent below the broadly whitish shoulders, beliind 



Fig. 49. — Xylota ornala, Brim., abdomen. 



the wings and on the entire hind margin of the concolorous reneous 

 scutellum. Dorsum of thorax with three indistinct broad blackish 

 stripes, well separated, commencing just behind the whitish 

 shoulders and continued to the posterior margin, the median dark 

 stripe attaining the anterior margin of the dorsum. Between 

 these three indistinct dark stripes the seneous ground-colour is more 

 pronounced, and these spaces bear deeper golden-brown hairs. 

 Under side of thorax blackish, slightly teneous, a patch of white 

 hair between the anterior pairs ot' legs, immediately below the end 

 of the transverse suture ; and a little white hair generally dis- 

 tributed over the venti-al surface. Abdomen black, moderately 

 shining, with an aeneous tinge, which latter is most conspicuous 

 on theunicolorous 1st segment ; the 2nd segment has a pair of 

 large yellowish spots, separated by a moderately wide space, and 

 enlarged laterally to the full length of tlie segment. A similar 



